阅读说明：本技术 人发纤维处理剂 (Human hair fiber treating agent ) 是由 古川淳一 于 2019-02-12 设计创作，主要内容包括：本发明的人发纤维处理剂是用于对两端为自由端的人发纤维进行处理的人发纤维处理剂,其组成中含有以下的成分(A)～(C)。(A)：甲醛或其水合物,(B)：通式(1)所示的三聚氰胺衍生物〔R<Sup>1</Sup>～R<Sup>3</Sup>表示氢原子、羟甲基氨基、羟基、卤素原子、苯基、碳原子数为1以上且6以下的直链或支链的烷基或烯基、或者碳原子数为1以上且6以下的直链或支链的烷氧基或烯氧基。〕,(C)：水。<Image he="279" wi="601" file="DDA0002630843910000011.GIF" imgContent="drawing" imgFormat="GIF" orientation="portrait" inline="no"></Image>(The human hair fiber treatment agent of the present invention is used for treating human hair fibers with free ends at both ends, and comprises the following components (A) to (C). (A) The method comprises the following steps Formaldehyde or a hydrate thereof, (B): a melamine derivative [ R ] represented by the general formula (1) 1 ～R 3 Represents a hydrogen atom, a hydroxymethylamino group, a hydroxyl group, a halogen atom, a phenyl group, a carbon atomA linear or branched alkyl group or alkenyl group having a number of 1 to 6, or a linear or branched alkoxy group or alkenyloxy group having a carbon number of 1 to 6. (C): and (3) water.)

1. A human hair fiber treatment agent, wherein,

the human hair fiber treatment agent is used for treating human hair fibers with free ends at both ends, and comprises the following components (A) to (C),

(A) the method comprises the following steps Formaldehyde or a hydrate thereof or a hydrate of the formaldehyde,

(B) the method comprises the following steps A melamine derivative represented by the general formula (1),

in the formula (I), the compound is shown in the specification,

R¹～R³the same or different, represents a hydrogen atom, a hydroxymethylamino group, a hydroxyl group, a halogen atom, a phenyl group, a linear or branched alkyl or alkenyl group having 1 to 6 carbon atoms, or a linear or branched alkyl or alkenyl group having 1 to 6 carbon atomsA chain or branched alkoxy or alkenyloxy group,

(C) the method comprises the following steps And (3) water.

2. The human hair fiber treatment agent according to claim 1,

the content of the component (A) is 0.1 to 60 mass%.

3. The human hair fiber treatment agent according to claim 1 or 2,

the content of the component (B) is 0.1 to 60 mass%.

4. A method for treating human hair fiber, wherein,

comprising the following step (i):

(i) a step of impregnating the human hair fiber having both free ends with the human hair fiber treatment agent according to any one of claims 1 to 3 under heating.

5. The human hair fiber treatment method according to claim 4,

the bath ratio when the human hair fiber is immersed in the human hair fiber treating agent is as follows: the mass of the human hair fiber treatment agent)/(the mass of the human hair fiber) is 2 or more.

6. The human hair fiber treatment method according to claim 4 or 5,

after the step (i), the following step (ii) is further performed:

(ii) a step of impregnating the human hair fiber in a post-crosslinking agent containing a component (D) and a component (C),

(D) the method comprises the following steps A formaldehyde derivative of at least 1 selected from the group consisting of formaldehyde, hydrates of formaldehyde, glyoxylic acid, hydrates of glyoxylic acid, glyoxylate, glyoxal, hydrates of glyoxal, glutaraldehyde and hydrates of glutaraldehyde,

(C) the method comprises the following steps And (3) water.

7. The method for treating human hair fiber according to any one of claims 4 to 6, wherein,

after the step (i) or the step (ii), the following step (iii) is further performed:

(iii) a step of impregnating human hair fibers in a surface treating agent containing a component (E) and a component (C),

(E) the method comprises the following steps A resorcinol derivative represented by the general formula (2),

in the formula (I), the compound is shown in the specification,

A¹～A⁴the same or different, represents a hydrogen atom, a hydroxyl group, a halogen atom, a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, a linear or branched alkyl or alkenyl group having 1 to 6 carbon atoms, or a linear or branched alkoxy or alkenyloxy group having 1 to 6 carbon atoms,

(C) the method comprises the following steps And (3) water.

8. A method for manufacturing a wig, wherein,

the method comprises the following steps: the step of treating human hair fibers for wigs by the method for treating human hair fibers according to any one of claims 4 to 7.

Technical Field

The present invention relates to a human hair fiber treatment agent for semi-permanently or permanently deforming the shape of human hair fibers, which are industrial raw materials.

Background

As fibers for implanting hair in wigs, there are widely known: fibers of artificial hair and fibers of human hair are used.

As advantages of the wig using artificial hair, there are: the hair curler has high heat resistance, and can easily curl straight hair or straighten curly hair (hereinafter referred to as "shape imparting property") by using a heating device such as a curling iron, and can maintain a curled or straightened shape (hereinafter referred to as "shape retaining property") formed by using the heating device even under high-temperature and high-humidity conditions such as bathing and shampooing. Furthermore, a wig using artificial hair is also superior to human hair in terms of rigidity and high strength. On the other hand, wigs using artificial hair have disadvantages: that is, it is difficult to achieve the original purpose of a wig such as "natural hair wear" because the surface is smooth, the gloss is strong, and the feel is unnatural.

The advantages of a wig using human hair include: the hand feeling and luster are close to their own hair, so that a natural appearance can be obtained when wearing it. Most wig wearers do not want others to know that they are wearing wigs, and because of this, it is a great advantage to obtain a natural appearance.

For example, patent document 1 discloses a hair fiber bundle in which a mixture of human hair and polyester fibers having specific physical properties is used to improve the disadvantage of poor shape retention of human hair without impairing the excellent properties of human hair. Patent document 2 discloses a hair ornament in which regenerated collagen fibers and human hair are mixed to improve entanglement accumulation which is a drawback of human hair products and long-lasting curling properties which is a drawback of regenerated collagen fibers.

(patent document 1) International publication No. 2005/037000 pamphlet

(patent document 2) Japanese patent application laid-open No. 2007-177370

Disclosure of Invention

The invention provides a human hair fiber treating agent for treating human hair fibers with free ends at both ends, which comprises the following components (A) to (C),

(A) the method comprises the following steps Formaldehyde or a hydrate thereof or a hydrate of the formaldehyde,

(B) the method comprises the following steps A melamine derivative represented by the general formula (1),

in the formula, R¹～R³The same or different, represents a hydrogen atom, a methylolamino group, a hydroxyl group, a halogen atom, a phenyl group, a linear or branched alkyl or alkenyl group having 1 to 6 carbon atoms, or a linear or branched alkoxy or alkenyloxy group having 1 to 6 carbon atoms,

(C) the method comprises the following steps And (3) water.

The invention also provides a human hair fiber treatment method, which comprises the following steps (i),

(i) and a step of immersing the human hair fiber having both free ends in the human hair fiber treatment agent under heating.

The invention also provides a method for manufacturing the wig, which comprises the following steps: and a step of treating the human hair fiber for wig by the human hair fiber treatment method.

Detailed Description

Conventionally, human hair used for a hair ornament such as a wig is subjected to a plurality of treatment steps such as bleaching and dyeing from the removal of a horny layer by chemical treatment in order to impart a uniform shape and color, and thus, there are cases where damage occurs during the treatment (patent document 1) and a problem in durability is known (patent document 2).

In recent years, as aesthetic consciousness has been improved, people who attach importance to appearance have increased, and wigs having further durability have been demanded.

However, the techniques described in patent documents 1 and 2 are products in which human hair and artificial hair are mixed, and therefore, there are still disadvantages that the appearance is unnatural and the touch is poor, and the naturalness of the appearance is insufficient.

Accordingly, the present invention relates to a human hair fiber treatment agent and a human hair fiber treatment method for manufacturing a human hair fiber for a wig, which maintains the natural appearance of human hair and has excellent shape durability and durability.

The inventors of the present invention found that; when human hair fibers implanted in a wig or a wig implanted with human hair fibers is treated with a composition containing a specific aldehyde compound and a specific phenol compound, not only can shape sustainability be imparted to the human hair fibers, but also the strength of the human hair fibers can be improved, whereby the durability thereof is improved, and as a result, the treated human hair fibers satisfy all of the characteristics of shape sustainability, natural gloss, excellence in touch, and high durability, and the invention has been completed.

The present invention can produce human hair fibers for wigs which have excellent shape durability and durability while maintaining the natural appearance and touch of human hair.

In the present invention, the "human hair fiber having free ends at both ends" refers to a human hair separated from a human head, and is used as an industrial material or a process material for wigs, hair grafts, and the like.

[ component (A): formaldehyde or its hydrate ]

The component (A) is formaldehyde or a hydrate thereof. As the hydrate of formaldehyde, formaldehyde monohydrate (methylene glycol) can be cited. Of these, formaldehyde is preferable from the viewpoint of imparting higher shape durability and durability to the treated human hair fiber.

The content of the component (a) in the human hair fiber treatment agent of the present invention is preferably 0.1% by mass or more, more preferably 1% by mass or more, further preferably 2.5% by mass or more, and further preferably 5% by mass or more, from the viewpoint of imparting higher shape sustainability and strength to the treated human hair fiber, and is preferably 60% by mass or less, more preferably 50% by mass or less, further preferably 40% by mass or less, further preferably 35% by mass or less, and further preferably 30% by mass or less, from the viewpoint of the above and formulation suitability.

That is, the content of the component (a) in the human hair fiber treatment agent of the present invention is preferably 0.1 to 60% by mass, more preferably 1 to 50% by mass, even more preferably 2.5 to 40% by mass, even more preferably 5 to 35% by mass, and even more preferably 5 to 30% by mass, from the viewpoint of imparting higher shape sustainability and strength to the treated human hair fiber and from the viewpoint of formulation suitability.

[ component (B): specific melamine derivatives ]

The component (B) is a melamine derivative represented by the general formula (1).

[ in the formula, R¹～R³The same or different, each represents a hydrogen atom, a methylolamino group, a hydroxyl group, a halogen atom, a phenyl group, a linear or branched alkyl or alkenyl group having 1 to 6 carbon atoms, or a linear or branched alkoxy or alkenyloxy group having 1 to 6 carbon atoms. Angle (c)

The melamine derivative as the component (B) is preferably at least 1 selected from melamine and trimethylolmelamine, and more preferably melamine, from the viewpoint of imparting higher shape durability and durability to the treated human hair fiber. As the component (B), 1 kind may be used alone, or 2 or more kinds may be used in combination.

The content of the component (B) in the human hair fiber treatment agent of the present invention is preferably 0.1% by mass or more, more preferably 1% by mass or more, further preferably 2.5% by mass or more, and further preferably 5% by mass or more, from the viewpoint of imparting higher shape sustainability and strength to the treated human hair fibers, and is preferably 60% by mass or less, more preferably 50% by mass or less, further preferably 40% by mass or less, further preferably 35% by mass or less, and further preferably 30% by mass or less, from the viewpoint of the above and the viewpoint of improving the touch of the hair surface.

That is, the content of the component (B) in the human hair fiber treatment agent of the present invention is preferably 0.1 to 60% by mass, more preferably 1 to 50% by mass, even more preferably 2.5 to 40% by mass, even more preferably 5 to 35% by mass, even more preferably 5% by mass or more and 30% by mass or less, from the viewpoint of imparting higher shape sustainability and strength to the treated human hair fibers and from the viewpoint of improving the feel of the hair surface.

The molar ratio (B)/(a) of the component (B) to the component (a) when applied to human hair fibers by the human hair fiber treatment agent of the present invention is preferably 0.005 or more, more preferably 0.01 or more, further preferably 0.05 or more, even more preferably 0.1 or more, and further preferably less than 5, more preferably 4 or less, even more preferably 3 or less, even more preferably 2 or less, from the viewpoint of good touch, from the viewpoint of further improving the shape retention and strength of the human hair fibers after treatment by a condensate of the component (a) and the component (B) formed in the human hair fibers.

That is, from the viewpoint of further improving the shape retention and strength of the treated human hair fiber by the condensation product of the component (a) and the component (B) formed in the human hair fiber and from the viewpoint of good touch, the molar ratio (B)/(a) of the component (B) to the component (a) is preferably 0.005 or more and less than 5, more preferably 0.01 to 4, further preferably 0.05 to 3, and further preferably 0.1 to 2.

[ component (C): water ]

The medium of the human hair fiber treatment agent is water. The content of the component (C) in the human hair fiber treatment agent of the present invention is preferably 10% by mass or more, more preferably 20% by mass or more, further preferably 30% by mass or more, and still more preferably 40% by mass or more, and is preferably 99% by mass or less, more preferably 97% by mass or less, still more preferably 95% by mass or less, and still more preferably 90% by mass or less.

That is, the content of the component (C) in the human hair fiber treatment agent of the present invention is preferably 10 to 99% by mass, more preferably 20 to 97% by mass, even more preferably 30 to 95% by mass, and even more preferably 40 to 90% by mass.

If necessary, a lower alcohol having 1 to 3 carbon atoms such as methanol or ethanol may be used in combination. In this case, the content of the lower alcohol having 1 to 3 carbon atoms in the human hair fiber treatment agent of the present invention is preferably 60% by mass or less, more preferably 40% by mass or less, further preferably 30% by mass or less, further preferably 20% by mass or less, further preferably 15% by mass or less, and further preferably 10% by mass or less, from the viewpoint of imparting higher shape durability and durability to the treated human hair fiber. Further, it is preferably 0.1 mass% or more.

The human hair fiber treatment agent of the present invention preferably further contains glutaraldehyde from the viewpoint of further improving the shape retention of human hair fibers. The content of glutaraldehyde in the human hair fiber treatment agent of the present invention is preferably 0.001 mass% or more, more preferably 0.05 mass% or more, further preferably 0.1 mass% or more, still more preferably 0.5 mass% or more, still more preferably 1.0 mass% or more, and is preferably 30 mass% or less, more preferably 20 mass% or less, still more preferably 15 mass% or less, still more preferably 10 mass% or less, and still more preferably 5 mass% or less.

That is, the content of glutaraldehyde in the human hair fiber treatment agent of the present invention is preferably 0.001 to 30 mass%, more preferably 0.05 to 20 mass%, even more preferably 0.1 to 15 mass%, even more preferably 0.5 to 10 mass%, and even more preferably 1.0 to 5 mass%.

The human hair fiber treatment agent of the present invention preferably contains a cationic surfactant from the viewpoint of improving the feel of the treated human hair fibers and further improving the effect of the present invention. As the cationic surfactant, a mono-long alkyl quaternary ammonium salt having an alkyl group having 1 to 24 carbon atoms and an alkyl group having 3 to 4 carbon atoms is preferable.

Preferably, at least 1 mono-long alkyl quaternary ammonium surfactant is selected from compounds of the formula.

[ in the formula, R⁴Represents a saturated or unsaturated linear or branched alkyl group having 8 to 22 carbon atoms, R⁸－CO－NH－(CH₂)_m-or R⁸－CO－O－(CH₂)_m- (wherein, R)⁸Represents a saturated or unsaturated straight chain or branched alkyl chain having 7 to 21 carbon atoms, m represents an integer of 1 to 4), R⁵、R⁶And R⁷Independently represents an alkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group having 1 to 4 carbon atoms, X^-Represents chloride, bromide, methylsulfate or ethylsulfate. Angle (c)

Examples of the preferred cationic surfactant include long-chain quaternary ammonium compounds such as cetyltrimethylammonium chloride, myristyltrimethylammonium chloride, behenyltrimethylammonium chloride (Behentrimonium chloride), cetyltrimethylammonium bromide, stearamidopropyltrimethylammonium chloride (stearamideproyltrimethonium chloride), and these can be used alone or as a mixture thereof.

The content of the cationic surfactant in the human hair fiber treatment agent of the present invention is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and is preferably 10% by mass or less, more preferably 5% by mass or less, from the viewpoint of improving the feel of the treated human hair fiber and further improving the effect of the present invention.

In addition, the human hair fiber treatment agent of the present invention preferably contains silicone from the viewpoint of improving the touch of the treated human hair fiber and achieving good combing properties. The silicone is preferably 1 or more selected from dimethylpolysiloxane and amino-modified silicone.

As the dimethylpolysiloxane, any cyclic or acyclic dimethylpolysiloxane polymer can be used, and examples thereof include: SH200 series, BY22-019, BY22-020, BY11-026, B22-029, BY22-034, BY22-050A, BY22-055, BY22-060, BY22-083 and FZ-4188 (all manufactured BY Tolydo Corning Co., Ltd.); KF-9088, KM-900 series, MK-15H, MK-88 (all manufactured by shin-Etsu chemical Co., Ltd.).

As the amino-modified silicone, all silicones having an amino group or an ammonium group can be used, and as examples thereof, there can be mentioned: an amino-modified silicone oil in which all or part of the terminal hydroxyl groups are blocked with methyl groups or the like, and an amino-terminated polydimethylsiloxane (amodimithicone) which is not blocked. From the viewpoint of improving the touch of the treated human hair fiber and achieving good combing properties, examples of the preferred amino-modified silicone include compounds represented by the following formula.

[ in the formula, R' represents a hydrogen atom, a hydroxyl group or R^X，R^XRepresents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 20 carbon atoms, J represents R^X、R"－(NHCH₂CH₂)_aNH₂、OR^XOr a hydroxyl group, R' represents a divalent hydrocarbon group having 1 to 8 carbon atoms, a represents a number of 0 to 3, and b and c represent numbers in which the sum of the numbers is 10 or more and less than 20000, preferably 20 or more and less than 3000, more preferably 30 or more and less than 1000, and further preferably 40 or more and less than 800, in terms of number average. Angle (c)

Specific examples of the commercially available product of the preferred amino-modified silicone include: SF8452C, SS3551 (both manufactured by Tolydakangning corporation); amino-modified silicone oils such as KF-8004 and KF-867S, KF-8015 (both manufactured by shin-Etsu chemical Co., Ltd.); SM8704C, SM8904, BY22-079, FZ-4671, FZ4672 (all manufactured BY Tollido Corning Co., Ltd.), and the like.

From the viewpoint of improving the feel of the treated human hair fiber and further improving the effect of the present invention, the content of the silicone in the human hair fiber treatment agent of the present invention is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, further preferably 0.5% by mass or more, and preferably 20% by mass or less, more preferably 10% by mass or less, further preferably 5% by mass or less.

The human hair fiber treatment agent of the present invention preferably contains a cationic polymer from the viewpoint of improving the feel of the treated human hair fibers.

The "cationic polymer" refers to a polymer having a cationic group or a group capable of being ionized into a cationic group, and includes an amphoteric polymer which is cationic as a whole. That is, there can be enumerated: examples of the polymer include polymers having an amino group or an ammonium group in a side chain of a polymer chain, and aqueous solution polymers having a diallyl quaternary ammonium salt as a constituent unit, such as cationized cellulose derivatives, cationic starches, cationized guar gum derivatives, polymers or copolymers of diallyl quaternary ammonium salts, and quaternized polyvinylpyrrolidone derivatives. Of these, from the viewpoint of improving the softness and smoothness of touch and ease of finger passage during rinsing and shampooing, the ease of combing and moisturizing during drying, and the stability of the treatment agent, 1 or 2 or more selected from the group consisting of polymers containing diallyl quaternary ammonium salts as a constituent unit, quaternized polyvinylpyrrolidone derivatives, and cationized cellulose derivatives are preferable, and 1 or 2 or more selected from the group consisting of polymers or copolymers of diallyl quaternary ammonium salts and cationized cellulose derivatives are more preferable.

Specific examples of the preferred polymers or copolymers of diallyl quaternary ammonium salts include: dimethyldiallylammonium chloride polymers (polyquaternium-6, e.g. Merquat 100; Lubrizol Advanced Materials), dimethyldiallylammonium chloride/acrylic acid copolymers (polyquaternium-22, e.g. Merquat 280, Merquat 295; Lubrizol Advanced Materials), dimethyldiallylammonium chloride/acrylamide copolymers (polyquaternium-7, e.g. Merquat 550; Lubrizol Advanced Materials), etc.

Specific examples of preferred quaternized polyvinylpyrrolidone derivatives include: a polymer obtained by polymerizing a vinylpyrrolidone copolymer and dimethylaminoethyl methacrylate (polyquaternium-11, for example, GAFQUAT734, GAFQUAT755N (both manufactured by Ashland corporation)).

Specific examples of preferred cationized cellulose include: polymers of hydroxycellulose with glycidyl trimethyl ammonium chloride (Polyquaternium salts 10, such as LEOGARD G and LEOGARD GP (both manufactured by Lion Co.; Polymer JR-125, Polymer JR-400, Polymer JR-30M, Polymer LR-400, and Polymer LR-30M (both manufactured by Amerchol Co.))); hydroxyethyl cellulose dimethyldiallyl ammonium chloride (polyquaternium-4, e.g., CELQUAT H-100, CELQUAT L-200 (both manufactured by Acksonobel Co., Ltd.)) and the like.

The content of the cationic polymer in the human hair fiber treatment agent of the present invention is preferably 0.001 mass% or more, more preferably 0.01 mass% or more, further preferably 0.05 mass% or more, and preferably 20 mass% or less, more preferably 10 mass% or less, from the viewpoint of improving the feel of the treated human hair fiber.

The human hair fiber treatment agent of the present invention may further contain an antioxidant such as ascorbic acid; pH regulators such as sodium hydroxide, potassium hydroxide, phosphoric acid, hydrochloric acid, etc.

The pH of the human hair fiber treatment agent of the present invention is preferably 6.0 or more, more preferably 6.5 or more, and even more preferably 7.0 or more from the viewpoint of enhancing the permeability into hair, and is preferably 12.0 or less, more preferably 11.5 or less, and even more preferably 11.0 or less from the viewpoint of suppressing hair damage. Here, the pH in the present invention is a value at 25 ℃.

That is, the pH of the human hair fiber treatment agent of the present invention is preferably 6.0 to 12.0, more preferably 6.5 to 11.5, and even more preferably 7.0 to 11.0, from the viewpoint of enhancing the penetration into hair and suppressing hair damage.

[ method for treating human hair fiber ]

The human hair fiber treatment agent of the present invention can impart shape retention and high durability to human hair fibers by treating human hair fibers by a method comprising the following step (i).

(i) And a step of immersing the human hair fiber having both free ends in the human hair fiber treatment agent of the present invention under heating.

In the step (i), the human hair fiber impregnated in the human hair fiber treatment agent may be either dry or wet. The amount of the human hair fiber-treating agent for impregnating the human hair fiber is preferably 2 or more, more preferably 3 or more, further preferably 5 or more, further preferably 10 or more, further preferably 20 or more, and preferably 500 or less, more preferably 250 or less, further preferably 100 or less in terms of a bath ratio with respect to the mass of the human hair fiber, that is, (the mass of the human hair fiber-treating agent/the mass of the human hair fiber).

That is, the bath ratio is preferably 2 to 500, more preferably 3 to 250, further preferably 5 to 100, further preferably 10 to 100, and further preferably 20 to 100.

In the step (i), the human hair fiber having both free ends may be fixed by a curler or the like and then immersed in the human hair fiber treatment agent of the present invention under heating. By doing so, not only shape sustainability and high durability can be imparted to the human hair fiber, but also a desired shape can be imparted at the same time.

The impregnation of the human hair fiber in the step (i) into the human hair fiber treatment agent is performed under heating conditions by heating the human hair fiber treatment agent. The heating may be performed by impregnating the human hair fibers in the heated human hair fiber treatment agent, or may be performed by impregnating the human hair fibers in a low-temperature human hair fiber treatment agent and then reheating the same. The temperature of the human hair fiber treatment agent is preferably 50 ℃ or higher, more preferably 60 ℃ or higher, and still more preferably 80 ℃ or higher, in order to increase the interaction between the components (a) and (B) and the protein in the human hair fiber and to promote the condensation reaction of the components (a) and (B) in the human hair fiber, and is preferably less than 100 ℃ and more preferably 99 ℃ or lower in order to prevent entanglement of the human hair fibers by the treatment agent during heating and deterioration of the operability in the subsequent steps.

The immersion time in the step (i) is appropriately selected depending on the heating temperature to be used, and is preferably 15 minutes or more, more preferably 30 minutes or more, and further preferably 1 hour or more from the viewpoint of allowing the human hair fiber treatment agent to permeate and diffuse into the human hair fibers and causing sufficient polymerization, and is preferably 48 hours or less, more preferably 24 hours or less, and further preferably 12 hours or less in order to suppress damage to the human hair fibers.

The step (i) is preferably performed in an environment in which evaporation of water is suppressed. Specific methods for suppressing the evaporation of water include: a method of covering a container of the human hair fiber treatment agent impregnated with human hair fibers with a film-like material made of a material impermeable to water vapor, a cap, a lid, or the like.

After the step (i), the human hair fibers may or may not be washed, and washing is preferably performed from the viewpoint of preventing the touch of the human hair fibers from being deteriorated by the remaining polymer.

The inventors considered that, by these treatments, the components (a) and (B) penetrated into the human hair fibers and interacted with the proteins in the human hair fibers. Further, a condensate of the component (a) and the component (B) is generated in the human hair fiber. Therefore, the shape of the human hair fiber treated by the method of the present invention is not deformed even if the washing is performed.

The following step (ii) may be further performed after the step (i), whereby the shape sustainability of the human hair fiber can be further improved.

(ii) And (C) impregnating the human hair fiber with a post-crosslinking agent containing the component (D) and the component (C).

(D) The method comprises the following steps A formaldehyde derivative of at least 1 selected from the group consisting of formaldehyde, hydrates of formaldehyde, glyoxylic acid, hydrates of glyoxylic acid, glyoxylate, glyoxal, hydrates of glyoxal, glutaraldehyde and hydrates of glutaraldehyde,

(C) the method comprises the following steps And (3) water.

The content of the component (D) in the post-crosslinking agent is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, and further preferably 1% by mass or more, and is preferably 60% by mass or less, more preferably 40% by mass, and further preferably 20% by mass or less.

That is, the content of the component (D) in the post-crosslinking agent is preferably 0.01 to 60% by mass, more preferably 0.1 to 40% by mass, and still more preferably 1 to 20% by mass.

The post-crosslinking agent may further contain a pH adjuster such as sodium hydroxide, potassium hydroxide, phosphoric acid, hydrochloric acid, or an organic acid. On the other hand, from the viewpoint of improving the surface feel of hair, the post-crosslinking agent preferably does not contain a melamine derivative of the component (B) or a resorcinol derivative of the component (E) described later.

The pH of the post-crosslinking agent is preferably 6.0 or less, more preferably 5.0 or less, and even more preferably 4.5 or less from the viewpoint of enhancing the penetration into hair, and is preferably 0 or more, more preferably 0.5 or more, and even more preferably 1 or more from the viewpoint of suppressing hair damage.

That is, the pH of the post-crosslinking agent is preferably 0 to 6.0, more preferably 0.5 to 5.0, and even more preferably 1 to 4.5, from the viewpoint of enhancing the penetration into hair and from the viewpoint of suppressing hair damage.

The temperature of the post-crosslinking agent used in the step (ii) is preferably 40 ℃ or higher, more preferably 60 ℃ or higher, and still more preferably 80 ℃ or higher, from the viewpoint of increasing the interaction between the condensates of the component (a) and the component (B) formed in the human hair fiber and the protein in the human hair fiber, thereby improving the effects (shape retention and strength) of the present invention, and is preferably less than 100 ℃, more preferably 99 ℃ or lower, from the viewpoint of preventing the human hair fibers from being entangled with each other due to the rapid boiling of the treating agent during heating, and from the viewpoint of preventing the operability of the subsequent steps from being lowered.

In the step (ii), the human hair fibers impregnated with the post-crosslinking agent may be either dry or wet. The amount of the post-crosslinking agent used for impregnating the human hair fiber is preferably 2 or more, more preferably 3 or more, further preferably 5 or more, further preferably 10 or more, further preferably 20 or more, and preferably 500 or less, more preferably 250 or less, further preferably 100 or less in terms of a bath ratio with respect to the mass of the human hair fiber, that is, (mass of the post-crosslinking agent/mass of the human hair fiber after being treated in the step (i)).

That is, the bath ratio is preferably 2 to 500, more preferably 3 to 250, further preferably 5 to 100, further preferably 10 to 100, and further preferably 20 to 100.

In the step (ii), the impregnation time of the human hair fiber in the post-crosslinking agent is preferably 1 minute or more, more preferably 3 minutes or more, further preferably 5 minutes or more, and preferably 5 hours or less, more preferably 3 hours or less, further preferably 1 hour or less, in order to allow the post-crosslinking agent to permeate and diffuse into the human hair fiber.

Further, the following step (iii) may be carried out after the above-mentioned step (i) or step (ii), and the touch feeling on the hair surface can be remarkably improved by carrying out the step (iii),

(iii) a step of impregnating human hair fibers with a surface treating agent (I) containing a component (E) and a component (C),

(E) the method comprises the following steps A resorcinol derivative represented by the general formula (2),

[ in the formula, A¹～A⁴The same or different, represents a hydrogen atom, a hydroxyl group, a halogen atom, a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, a linear or branched alkyl or alkenyl group having 1 to 6 carbon atoms, or a linear or branched alkoxy or alkenyloxy group having 1 to 6 carbon atoms. Angle (c)

(C) The method comprises the following steps And (3) water.

Preferable examples of the component (E) in this case include: resorcinol, 2-methylresorcinol, 4-chlororesorcinol, pyrogallol, and the like. From the viewpoint of improving the touch of the hair surface, the content of the component (E) in the surface processing agent (I) is preferably 1% by mass or more, more preferably 2.5% by mass or more, further preferably 5% by mass or more, further preferably 10% by mass or more, further preferably 20% by mass or more, and preferably 98% by mass or less, more preferably 97% by mass or less, further preferably 95% by mass or less, further preferably 93% by mass or less, further preferably 80% by mass or less.

The surface-treating agent (I) may further contain a pH adjuster such as sodium hydroxide, potassium hydroxide, phosphoric acid, hydrochloric acid, or an organic acid. On the other hand, from the viewpoint of improving the surface texture of hair, the surface-treating agent (I) preferably does not contain a melamine derivative as the component (B) or a formaldehyde derivative as the component (D).

The pH of the surface processing agent (I) is preferably 7.0 or less, more preferably 6.8 or less, and even more preferably 6.5 or less from the viewpoint of enhancing the penetration into hair, and is preferably 0 or more, more preferably 0.5 or more, and even more preferably 1.0 or more from the viewpoint of suppressing hair damage.

That is, the pH of the surface-treating agent (I) is preferably 0 to 7.0, more preferably 0.5 to 6.8, and even more preferably 1.0 to 6.5, from the viewpoint of enhancing the penetration into hair and from the viewpoint of suppressing hair damage.

The temperature of the surface-treating agent (I) used in the step (iii) is preferably 0 ℃ or higher, more preferably 20 ℃ or higher, even more preferably 40 ℃ or higher, and is preferably 80 ℃ or lower, and more preferably 60 ℃ or lower, from the viewpoint of allowing the surface-treating agent (I) to effectively permeate and diffuse into human hair fibers and further improving the feel improvement effect.

In the step (iii), the human hair fibers impregnated with the surface-treating agent (I) may be either dry or wet. The amount of the surface-treating agent for impregnating the human hair fiber is preferably 2 or more, more preferably 3 or more, further preferably 5 or more, further preferably 10 or more, further preferably 20 or more, and preferably 500 or less, more preferably 250 or less, further preferably 100 or less in terms of a bath ratio with respect to the mass of the human hair fiber, that is, (mass of the surface-treating agent (I)/mass of the human hair fiber after treatment in the utilizing step (ii)).

That is, the bath ratio is preferably 2 to 500, more preferably 3 to 250, further preferably 5 to 100, further preferably 10 to 100, and further preferably 20 to 100.

In the step (iii), in order to allow the surface-treating agent (I) to permeate and diffuse into the human hair fibers, the immersion time of the human hair fibers in the surface-treating agent (I) is preferably 1 hour or more, more preferably 3 hours or more, further preferably 6 hours or more, further preferably 24 hours or more, and preferably 1 month or less, more preferably 2 weeks or less, further preferably 10 days or less, further preferably 168 hours or less.

[ additional processing is also possible ]

In the method for treating human hair fibers of the present invention, in addition to the above-mentioned steps (i) to (iii), 1 or more kinds of various treatments selected from the group consisting of removing cuticle, decoloring, dyeing, and surface processing for imparting hydrophobicity and low friction may be additionally performed.

In this case, the removal of the cuticle layer, the decolorization, and the dyeing may be performed before the above-described steps (i) to (iii), may be performed after the above-described steps (i) to (iii), or may be performed between the steps (i) to (iii). In addition, a combination of a plurality of treatments may be added, and in the case of adding both bleaching and hair dyeing, bleaching is required before hair dyeing, and in addition, any treatment may be performed first, or other treatments such as removal of the cuticle layer may be performed between bleaching and hair dyeing.

On the other hand, the surface treatment for imparting hydrophobicity and low friction needs to be performed after the above-described step (i); alternatively, when the treatment with the post-crosslinking agent in the step (ii) is also performed together, it is necessary to perform the treatment after the step (ii); further, when the surface processing for improving the touch feeling in the step (iii) is also performed together, it is necessary to perform the processing after the step (iii); among these, further preferable results can be obtained by further performing the step (iii) and thereafter. The surface treatment for imparting hydrophobicity and low friction may be performed at a stage after the step (i), (ii) or (iii) as described above, and the procedure of removing the horny layer, decoloring and dyeing is not particularly limited.

(removal of horny layer)

Since the horny layer existing on the surface of the human hair fiber has a directional structure in which scales are alternately superimposed, human hair fibers having different directivities are likely to be entangled with each other when they are mixed in one fiber bundle, and the workability is significantly impaired. Therefore, the cuticle removal is performed to remove the directionality of hair and to facilitate handling, and is performed by immersing human hair fibers in the below-described cuticle removal composition.

The composition for removing horny layer contains a chlorine precursor having a horny layer-peeling action and water. Examples of the chlorine precursor include sodium hypochlorite, potassium dichloroisocyanurate, sodium dichloroisocyanurate, and trichloroisocyanuric acid, and 1 or more kinds of chlorine precursors selected from these can be used.

The content of the chlorine precursor in the composition for removing the horny layer is preferably 1 mass% or more, more preferably 2 mass% or more, and preferably 15 mass% or less, more preferably 12 mass% or less, and still more preferably 9 mass% or less.

The pH of the composition for removing the horny layer at 25 ℃ is preferably 2 or more, more preferably 3 or more, further preferably 4.5 or more, and is preferably 10 or less, more preferably 8 or less, further preferably 7 or less.

(decolorization)

The bleaching is performed by dipping human hair fibers in a bleaching agent composition containing an alkaline agent, an oxidizing agent and water. Depigmenting compositions are generally in two dosage forms, the first containing an alkaline agent and water and the second containing an oxidizing agent and water. The two preparations are usually stored separately and mixed before hair impregnation.

Preferred examples of the alkaline agent include: ammonia and salts thereof; alkanolamines (monoethanolamine, isopropanolamine, 2-amino-2-methylpropanol, 2-aminobutanol, etc.) and salts thereof; alkanediamines (1, 3-propanediamine, etc.) and salts thereof; and carbonates (guanidine carbonate, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, etc.); and mixtures thereof, but are not limited thereto.

The content of the alkaline agent in the decolorizer composition (in the case of a two-part formulation, a mixture of the first agent and the second agent) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and still more preferably 1% by mass or more, and is preferably 15% by mass or less, more preferably 10% by mass or less, and still more preferably 7.5% by mass or less.

Examples of the preferable oxidizing agent include, but are not limited to, hydrogen peroxide, urea peroxide, melamine peroxide, and sodium bromate. Among these oxidizing agents, hydrogen peroxide is preferred.

The content of the oxidizing agent in the decolorizer composition is preferably 1% by mass or more, more preferably 2% by mass or more, and preferably 15% by mass or less, more preferably 12% by mass or less, and still more preferably 9% by mass or less.

When the first dose and the second dose are stored separately, the pH of the second dose at 25 ℃ is preferably 2 or more, more preferably 2.5 or more, and preferably 6 or less, more preferably 4 or less. The pH can be adjusted using a suitable buffer. The pH of the decolorizer composition at 25 ℃ is preferably 6 or more, more preferably 6.5 or more, and still more preferably 6.8 or more, and is preferably 11 or less, more preferably 10.5 or less, and still more preferably 10 or less.

(Hair dyeing)

Hair dyeing is performed by impregnating human hair fibers in the hair dye composition. The hair dye composition contains a dye, and may optionally contain an alkaline agent or an acid, an oxidizing agent, or the like. As the dye, a direct dye, an oxidation dye, and a combination thereof can be cited.

The type of the direct dye is not particularly limited, and any direct dye suitable for dyeing hair may be used. Examples of the direct dye include anionic dyes, nitro dyes, disperse dyes, cationic dyes, and dyes having an azophenol structure selected from the group consisting of HC red 18, HC blue 18, and HC yellow 16 described below, salts thereof, and mixtures thereof.

As the cationic dye, for example, there can be mentioned: basic blue 6, basic blue 7, basic blue 9, basic blue 26, basic blue 41, basic blue 99, basic brown 4, basic brown 16, basic brown 17, natural brown 7, basic green 1, basic orange 31, basic red 2, basic red 12, basic red 22, basic red 51, basic red 76, basic violet 1, basic violet 2, basic violet 3, basic violet 10, basic violet 14, basic yellow 57, basic yellow 87, and mixtures thereof, but is not limited thereto. Particularly preferred are basic red 51, basic orange 31, basic yellow 87, and mixtures thereof.

As the anionic dye, for example, there can be mentioned: acid black 1, acid blue 3, food blue 5, acid blue 7, acid blue 9, acid blue 74, acid orange 3, acid orange 4, acid orange 6, acid orange 7, acid orange 10, acid red 1, acid red 14, acid red 18, acid red 27, acid red 33, acid red 50, acid red 52, acid red 73, acid red 87, acid red 88, acid red 92, acid red 155, acid red 180, acid violet 2, acid violet 9, acid violet 43, acid violet 49, acid yellow 1, acid yellow 10, acid yellow 23, acid yellow 3, food yellow No.8, D & C brown No.1, D & C green No.5, D & C green No.8, D & C orange No.4, D & C orange No.10, D & C orange No.11, D & C red No.21, D & C red No.27, D & C red No.33, D & C2, D & C orange No.7, D & C orange No.10, D & C red No.8, FD & C red No.3, and C red No.2, FD & C red No.4, FD & C yellow No.6, FD & C blue 1, food black 2, and alkali metal salts thereof (sodium salt, potassium salt, etc.) and mixtures thereof, but are not limited thereto.

Of these, preferred anionic dyes are acid black 1, acid red 52, acid violet 2, acid violet 43, acid red 33, acid orange 4, acid orange 7, acid red 27, acid yellow 3, acid yellow 10, and salts thereof. More preferred anionic dyes are acid red 52, acid violet 2, acid red 33, acid orange 4, acid yellow 10, and salts and mixtures thereof.

Examples of nitro dyes include: HC blue No.2, HC blue No.4, HC blue No.5, HC blue No.6, HC blue No.7, HC blue No.8, HC blue No.9, HC blue No.10, HC blue No.11, HC blue No.12, HC blue No.13, HC brown No.1, HC brown No.2, HC green No.1, HC orange No.2, HC orange No.3, HC orange No.5, HC red BN, HC red No.1, HC red No.3, HC red No.7, HC red No.8, HC red No.9, HC red No.10, HC red No.11, HC red No.13, HC red No.54, HC red No.14, HC violet BS, HC violet No.1, HC violet No.2, HC yellow No.4, HC yellow No.5, HC yellow No.6, HC yellow No.7, HC yellow No.8, HC yellow No.12, HC yellow No.1, HC yellow No.4, HC yellow No.13, HC yellow No.4, HC yellow No.1, HC yellow No.4, HC yellow 2, HC, 1-hydroxy-2-amino-3-nitrobenzene, picric acid-2-hydroxyethyl ester, and mixtures thereof, but is not limited thereto.

Examples of the disperse dye include disperse blue 1, disperse black 9, disperse violet 1, and a mixture thereof, but are not limited thereto.

These direct dyes may be used alone in 1 kind, or 2 or more kinds may be used in combination, or direct dyes having different ionic properties may be used in combination.

The content of the direct dye in the hair dye composition is preferably 0.001% by mass or more, more preferably 0.01% by mass or more, and even more preferably 0.05% by mass or more, from the viewpoint of obtaining sufficient dyeing property, and is preferably 10% by mass or less, more preferably 7.5% by mass or less, even more preferably 5.0% by mass or less, and even more preferably 3.0% by mass or less, from the viewpoint of compatibility.

When the hair dye composition contains only a direct dye as a dye, it is not necessary to use an oxidizing agent for dyeing the hair, but the composition may contain an oxidizing agent if the hair is to be brightened.

When the hair dye composition contains an oxidation dye, it is usually in a two-pack form, the first agent containing an oxidation dye intermediate (precursor and coupling agent) and an alkaline agent, and the second agent containing an oxidizing agent such as hydrogen peroxide. The two preparations are usually stored separately and mixed before hair impregnation.

As the oxidation dye intermediate, there is no particular limitation, and any of the well-known precursors and coupling agents commonly used in hair dyeing preparations can be suitably used.

As the precursor, for example, there can be mentioned: p-phenylenediamine, toluene-2, 5-diamine, 2-chloro-p-phenylenediamine, N-methoxyethyl-p-phenylenediamine, N-phenyl-p-phenylenediamine, N-bis (2-hydroxyethyl) -p-phenylenediamine, 2- (2-hydroxyethyl) -p-phenylenediamine, 2, 6-dimethyl-p-phenylenediamine, 4 '-diaminodiphenylamine, 1, 3-bis (N- (2-hydroxyethyl) -N- (4-aminophenyl) amino) -2-propanol, PEG-3,3, 2' -p-phenylenediamine, p-aminophenol, p-methylaminophenol, 3-methyl-4-aminophenol, 2-aminomethyl-4-aminophenol, p-aminotoluene-2, 5-diamine, 2-chloro-p-phenylenediamine, N-methoxyethyl-p-phenylenediamine, N-phenyl-p-phenylenediamine, 2, 6-dimethyl-p-, 2- (2-hydroxyethylaminomethyl) -4-aminophenol, o-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol, 2-amino-5-acetaminophenol, 3, 4-diaminobenzoic acid, 5-aminosalicylic acid, 2,4,5, 6-tetraaminopyrimidine, 2,5, 6-triamino-4-hydroxypyrimidine, 4, 5-diamino-1- (4' -chlorobenzyl) pyrazole, 4, 5-diamino-1-hydroxyethylpyrazole, salts of these substances and mixtures thereof, but are not limited thereto.

Examples of the coupling agent include: m-phenylenediamine, 2, 4-diaminophenoxyethanol, 2-amino-4- (2-hydroxyethylamino) anisole, 2, 4-diamino-5-methylphenylether, 2, 4-diamino-5- (2-hydroxyethoxy) toluene, 2, 4-dimethoxy-1, 3-diaminobenzene, 2, 6-bis (2-hydroxyethylamino) toluene, 2, 4-diamino-5-fluorotoluene, 1, 3-bis (2, 4-diaminophenoxy) propane, m-aminophenol, 2-methyl-5- (2-hydroxyethylamino) phenol, 2, 4-dichloro-3-aminophenol, 2-amino-4-phenoxyethanol, 2-amino-4- (2-hydroxyethylamino) anisole, 2, 4-diamino-5-methylphenol, 2, 4-diamino-5-aminophenol, 2-methyl-5, 2-chloro-3-amino-6-methylphenol, 2-methyl-4-chloro-5-aminophenol, N-cyclopentyl-m-aminophenol, 2-methyl-4-methoxy-5- (2-hydroxyethylamino) phenol, 2-methyl-4-fluoro-5-aminophenol, p-aminoo-cresol, resorcinol, 2-methylresorcinol, 4-chlororesorcinol, 1-naphthol, 1, 5-dihydroxynaphthalene, 1, 7-dihydroxynaphthalene, 2-isopropyl-5-methylphenol, 4-hydroxyindole, 5-hydroxyindole, 6-hydroxyindole, 7-hydroxyindole, 2-methyl-4-amino-5-aminophenol, 2-methyl-4-fluoro-5-aminophenol, p-aminoo-cresol, resorcinol, 2-methylresorcinol, 4-chlororesorcinol, 1-naphthol, 1, 6-hydroxybenzomorpholine, 3, 4-methylenedioxyphenol, 2-bromo-4, 5-methylenedioxyphenol, 3, 4-methylenedioxyaniline, 1- (2-hydroxyethyl) amino-3, 4-methylenedioxybenzene, 2, 6-dihydroxy-3, 4-dimethylpyridine, 2, 6-dimethoxy-3, 5-diaminopyridine, 2, 3-diamino-6-methoxypyridine, 2-methylamino-3-amino-6-methoxypyridine, 2-amino-3-hydroxypyridine, 2, 6-diaminopyridine, as well as salts of these substances and mixtures thereof, without being limited thereto.

The content of the precursor and the coupling agent in the hair dye composition is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, and preferably 10% by mass or less, more preferably 7.5% by mass or less, and further preferably 5% by mass or less, respectively.

When the hair dye composition contains an oxidation dye, an alkaline agent is also contained. Preferred examples of the alkaline agent include: ammonia and salts thereof; alkanolamines (monoethanolamine, isopropanolamine, 2-amino-2-methylpropanol, 2-aminobutanol, etc.) and salts thereof; alkanediamines (1, 3-propanediamine, etc.) and salts thereof; and carbonates (guanidine carbonate, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate, etc.); and mixtures thereof, but are not limited thereto.

The content of the alkaline agent in the hair dye composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and still more preferably 1% by mass or more, and is preferably 15% by mass or less, more preferably 10% by mass or less, and still more preferably 7.5% by mass or less.

When the hair dye composition contains an oxidation dye, the composition containing an oxidizing agent (second agent) and the composition containing an oxidation dye (first agent) are stored separately and mixed before the hair is impregnated. Examples of the preferable oxidizing agent include, but are not limited to, hydrogen peroxide, urea peroxide, melamine peroxide, and sodium bromate. Among these oxidizing agents, hydrogen peroxide is preferred.

The content of the oxidizing agent in the hair dye composition is preferably 1% by mass or more, more preferably 2% by mass or more, and is preferably 15% by mass or less, more preferably 12% by mass or less, and further preferably 9% by mass or less.

When the first dose and the second dose are separately stored, the pH of the second dose at 25 ℃ is preferably 2 or more, more preferably 2.5 or more, and preferably 6 or less, more preferably 4 or less. The pH can be adjusted using a suitable buffer. The hair dye composition obtained by mixing the first agent and the second agent has a pH at 25 ℃ of preferably 6 or more, more preferably 6.5 or more, further preferably 6.8 or more, and preferably 11 or less, more preferably 10.5 or less, further preferably 10 or less.

When the hair dye composition contains an oxidation dye, the above-exemplified direct dye may be contained.

The hair dye composition may preferably further contain a surfactant and a hair care component described below, and is preferably in the form of a solution, an emulsion, cream (cream), paste (paste), or Mousse (Mousse).

The temperature of the hair dye composition is preferably 0 ℃ or higher, more preferably 10 ℃ or higher, even more preferably 20 ℃ or higher, and is preferably 90 ℃ or lower, more preferably 80 ℃ or lower, from the viewpoint of efficiently permeating and diffusing the hair dye composition into human hair fibers and further improving the effect of dyeing hair.

(surface treatment for imparting hydrophobicity and reducing Friction)

The surface treatment for imparting hydrophobicity and low friction is carried out by immersing the hair in the surface treating agent (II) shown below at the following stages: a stage subsequent to the aforementioned step (i); when the post-crosslinking agent treatment of step (ii) is performed, the step is performed after step (ii); the step (iii) is followed by the step of surface processing for improving the tactile sensation.

The surface-treating agent (II) contains the following component (F) in an amount of 0.01 to 5.00 mass% and water.

(F) An epoxyaminosilane copolymer which is a reaction product of the following compounds (a) to (d),

(a) polysiloxanes with at least two oxirane (oxy group) or oxetane (oxy group) groups,

(b) polyethers having at least two oxirane or oxetane groups,

(c) an amino-propyl-trialkoxy silane is prepared,

(d) a compound selected from the group consisting of primary and secondary amines,

primary amine: methylamine, ethylamine, allylamine, ethanolamine, isopropylamine, butylamine, isobutylamine, hexylamine, dodecylamine, oleylamine, aniline, aminopropyltrimethylsilane, aminopropyltriethylsilane, aminomorpholine, aminopropyldiethylamine, benzylamine, naphthylamine, 3-amino-9-ethylcarbazole, 1-aminoheptafluorohexane, 2,3,3,4,4,5,5,6,6,7,7,8,8, 8-pentadecafluoro-1-octylamine,

secondary amine: methylethylamine, methyloctadecylamine, diethanolamine, dibenzylamine, dihexylamine dicyclohexylamine, piperidine, pyrrolidinophotalimide, polymeric amines.

[ component (F): epoxy amino silane copolymer ]

The epoxy aminosilane copolymer of the component (F) is a reaction product of the compounds (a) to (d) shown below.

< Compounds (a), (b) > <

The compound (a) is a polysiloxane containing at least two oxirane groups or oxetane groups, and examples thereof include compounds represented by the following general formula (5).

Wherein R represents a hydrocarbon group having 1 to 6 carbon atoms which may have an oxirane group or an oxetanyl group at a terminal and may contain a hetero atom, and x represents a number of 1 to 1000. Angle (c)

The compound (b) is a polyether containing at least two ethylene oxide groups or oxetane groups, and examples thereof include compounds represented by the following general formula (6).

Wherein R is the same as above, y is 1 to 100, z is 0 to 100, and y + z is a number of 1 to 200. Angle (c)

In the general formulae (5) and (6), as the hetero atom which may be contained in R, an oxygen atom is preferable. Examples of R include: an oxiranylmethyl group (glycidyl group), an oxiranylmethoxy group (glycidyloxy group), an oxiranylmethoxypropyl group (glycidoxypropyl group), an oxetanyl group, an oxetanylmethoxy group, an oxetanyloxypropyl group, a 3-ethyloxetanyl group, and the like, wherein a hydrocarbon group having an oxiranyl group and 1 to 4 carbon atoms which may contain a hetero oxygen atom is preferable, and at least 1 selected from the group consisting of an oxiranylmethyl group (glycidyl group), an oxiranylmethoxy group (glycidyloxy group), and an oxiranylmethoxypropyl group (glycidoxypropyl group) is more preferable.

< Compound (c) >

The compound (c) is aminopropyltrialkoxysilane. Examples of the alkoxy group in the compound (c) include an alkoxy group having 1 to 6 carbon atoms, preferably an alkoxy group having 2 to 4 carbon atoms, more preferably an alkoxy group having 3 carbon atoms, and particularly preferably an isopropoxy group. As the compound (c), there may be mentioned: aminopropyltrimethoxysilane, aminopropyltriethoxysilane, aminopropyltripropoxysilane, aminopropyltriisopropoxysilane, aminopropyltributoxysilane and aminopropyltri-tert-butoxysilane, among which aminopropyltriisopropoxysilane is preferred. As for the compound (c), any 1 species may be used alone, or any 2 or more species may be used in combination.

< Compound (d) >

The compound (d) is a compound selected from the following primary and secondary amines.

Primary amine: methylamine, ethylamine, allylamine, ethanolamine, isopropylamine, butylamine, isobutylamine, hexylamine, dodecylamine, oleylamine, aniline, aminopropyltrimethylsilane, aminopropyltriethylsilane, aminomorpholine, aminoethyldimethylamine, aminoethyldiethylamine, aminoethyldibutylamine, aminopropyldimethylamine, aminopropyldiethylamine, aminopropyldibutylamine, benzylamine, naphthylamine, 3-amino-9-ethylcarbazole, 1-aminoheptafluorohexane, 2,3,3,4,4,5,5,6,6,7,7,8,8, 8-pentadecafluoro-1-octylamine,

secondary amine: methylethylamine, methyloctadecylamine, diethanolamine, dibenzylamine, dihexylamine dicyclohexylamine, piperidine, pyrrolidinophotalimide, polymeric amines.

Of these, primary amines are preferable, and 1 kind selected from aminopropyldiethylamine, aminopropyldimethylamine, and aminopropyldibutylamine is more preferable. As for the compound (d), any 1 species may be used alone, or any 2 or more species may be used in combination.

The reaction of the compounds (a) to (d) is carried out, for example, by refluxing in a solvent such as isopropyl alcohol for a certain period of time. Among them, the molar ratio of the oxirane group or oxetanyl group of the compounds (a) and (b) to the amino group of the compound (c) is preferably 1 or more, more preferably 1.1 or more, and further preferably 1.2 or more, and is preferably 4 or less, more preferably 3.9 or less, and further preferably 3.8 or less.

As the component (F), there may be mentioned: examples of commercially available products of the compound having the INCI name of polysiloxane-29 (POLYSILICONE-9) include Silsoft CLX-E (15% by mass as an active ingredient, containing dipropylene glycol and water) available from Momentive Performance Materials (Momentive Performance Materials).

The content of the component (F) in the surface processing agent (II) is 0.01 mass% or more, preferably 0.05 mass% or more, more preferably 0.10 mass% or more, and even more preferably 0.20 mass% or more from the viewpoint of imparting sufficient hydrophobicity to human hair fibers, and is 5.00 mass% or less, preferably 4.00 mass% or less, more preferably 3.00 mass% or less, and even more preferably 2.00 mass% or less from the viewpoint of not causing sticky touch.

[ pH adjustor ]

The pH of the surface-treating agent (II) at 25 ℃ is preferably in the range of not more than the range from the viewpoint of increasing the reaction rate of the trialkoxysilane moiety of the component (F) in the acidic region or the basic region. When the surface-treating agent (II) is in the acidic region, it is preferably 1 or more, more preferably 1.5 or more, and still more preferably 2 or more, and is preferably 5 or less, more preferably 4.0 or less, and still more preferably 3.5 or less. When the surface-treating agent (II) is in the alkaline region, it is preferably 7 or more, more preferably 7.5 or more, and still more preferably 8.0 or more, and is preferably 11 or less, more preferably 10.5 or less, and still more preferably 10 or less. In order to adjust the pH of the surface treating agent (II) within the above range, the surface treating agent (II) may suitably contain a pH adjuster. As the pH adjuster, as the alkaline agent, there can be used: alkanolamines such as monoethanolamine, isopropanolamine, 2-amino-2-methylpropanol, and 2-aminobutanol, and salts thereof; alkyldiamines such as 1, 3-propanediamine, and salts thereof; carbonates such as guanidine carbonate, sodium carbonate, potassium carbonate, sodium hydrogen carbonate, and potassium hydrogen carbonate; hydroxides such as sodium hydroxide and potassium hydroxide. As the acid agent, there can be used: inorganic acids such as hydrochloric acid and phosphoric acid; hydrochloride salts such as monoethanolamine hydrochloride; phosphates such as monopotassium phosphate and disodium hydrogen phosphate; and organic acids such as lactic acid and malic acid.

The amount of the surface-treating agent (II) to impregnate the human hair fiber is preferably 2 or more, more preferably 5 or more, further preferably 10 or more, and preferably 100 or less, more preferably 50 or less, further preferably 20 or less in terms of a bath ratio with respect to the mass of the human hair fiber, that is, (the mass of the surface-treating agent (II)/the mass of the human hair fiber).

By treating the human hair fibers by the human hair fiber treatment method, human hair fibers for wigs can be produced which maintain the natural appearance of human hair and have excellent shape sustainability and durability, and wigs can be produced using the fibers.

In addition, by treating human hair fibers by the human hair fiber treatment method of the present invention, it is possible to manufacture human hair fibers for hair extension sheets which maintain the natural appearance of human hair and have excellent shape sustainability and durability, and also to manufacture hair extension sheets using the fibers.

Further, as a treatment agent capable of producing human hair fibers for wigs which maintain the natural appearance and touch of human hair and are excellent in shape retention and durability, and a treatment method using the treatment agent, the following embodiment is preferable.

[ treating agent 1]

A human hair fiber treatment agent for treating human hair fibers having free ends at both ends, which comprises the following components (A) to (C) and has a pH of 7.0 to 11,

(A) formaldehyde: 1.5 to 15% by mass,

(B) melamine: 4.2 to 42% by mass,

(C) water: and (4) the balance.

[ treating agent kit 1]

A human hair fiber treatment agent kit (kit) for treating a human hair fiber having free ends at both ends, comprising: a treating agent 1 and a post-crosslinking agent having a pH of 1.0 to 4.5, the post-crosslinking agent containing a component (D) and a component (C),

(D) glyoxylic acid or formaldehyde: 1 to 20% by mass of a binder,

(C) water: and (4) the balance.

[ treating agent kit 1' ]

A human hair fiber treatment agent kit, which is characterized in that the treatment agent kit 1 further comprises: a surface-treating agent comprising a component (E) and a component (C) and having a pH of 1.0 to 6.5,

(E) resorcinol: 20 to 60% by mass of a binder,

(C) water: and (4) the balance.

[ treatment method 1]

A method for treating human hair fibers, comprising the steps of (i),

(i) immersing the human hair fiber with free ends at two ends in the human hair fiber treating agent for 1-3 hours at a bath ratio of (mass of human hair fiber treating agent)/(mass of human hair fiber) of 20-100 under the heating condition of 90-99 ℃,

the human hair fiber treatment agent contains components (A) to (C) in the composition, and the pH value of the human hair fiber treatment agent is 7.0 to 11.0,

(A) formaldehyde: 1.5 to 15% by mass,

(B) melamine: 4.2 to 42% by mass,

(C) water; and (4) the balance.

[ treatment method 1' ]

A method for treating human hair fibers, which comprises, after step (i) of the treatment method 1, further performing the following step (ii),

(ii) a step of immersing the human hair fiber treated in the step (i) in a post-crosslinking agent at a bath ratio of (mass of post-crosslinking agent)/(mass of human hair fiber treated in the step (i)) of 20 to 100 at a temperature of 90 to 90 ℃ for 1 to 3 hours,

the post-crosslinking agent contains a component (D) and a component (C), and the pH of the post-crosslinking agent is 1.0 to 4.5,

(D) glyoxylic acid or formaldehyde: 1 to 20% by mass of a binder,

(C) water: and (4) the balance.

[ treatment method 1' ]

A method for treating human hair fibers, which comprises, after the step (ii) of the treatment method 1', further carrying out the step (iii),

(iii) a step of immersing the human hair fiber treated in the step (ii) in the surface-treating agent (I) at a bath ratio of (mass of the surface-treating agent (I))/(mass of the human hair fiber treated in the step (ii)) of 20 to 100 at a temperature of 20 to 90 ℃ for 24 to 168 hours,

the surface processing agent (I) contains a component (E) and a component (C), and the pH of the surface processing agent (I) is 1.0 to 6.5,

(E) resorcinol: 20 to 60% by mass of a binder,

(C) water: and (4) the balance.

Preferred embodiments of the present invention are further disclosed below with respect to the above-described embodiments.

< 1 > a human hair fiber-treating agent for treating human hair fibers having free ends at both ends, comprising the following components (A) to (C),

(A) the method comprises the following steps Formaldehyde or a hydrate thereof or a hydrate of the formaldehyde,

(B) the method comprises the following steps A melamine derivative represented by the general formula (1),

in the formula, R¹～R³The same or different, represents a hydrogen atom, a methylolamino group, a hydroxyl group, a halogen atom, a phenyl group, a linear or branched alkyl or alkenyl group having 1 to 6 carbon atoms, or a linear or branched alkoxy or alkenyloxy group having 1 to 6 carbon atoms,

(C) the method comprises the following steps And (3) water.

< 2 > the human hair fiber-treating agent of < 1 > wherein the content of the component (A) is preferably 0.1% by mass or more, more preferably 1% by mass or more, further preferably 2.5% by mass or more, further preferably 5% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, further preferably 40% by mass or less, further preferably 35% by mass or less, further preferably 30% by mass or less.

< 3 > such as < 1 > or < 2 > wherein the component (B) is preferably at least 1 selected from the group consisting of melamine and trimethylolmelamine, more preferably melamine.

The human hair fiber treatment agent of any one of < 4 > to < 3 >, wherein the content of the component (B) is preferably 0.1% by mass or more, more preferably 1% by mass or more, further preferably 2.5% by mass or more, further preferably 5% by mass or more, and preferably 60% by mass or less, more preferably 50% by mass or less, further preferably 40% by mass or less, further preferably 35% by mass or less, further preferably 30% by mass or less.

The human hair fiber-treating agent of any one of < 5 > such as < 1 > - < 4 >, wherein the molar ratio (B)/(A) of the component (B) to the component (A) is preferably 0.005 or more, more preferably 0.01 or more, further preferably 0.05 or more, still further preferably 0.1 or more, and preferably less than 5, more preferably 4 or less, further preferably 3 or less, still further preferably 2 or less.

The human hair fiber-treating agent of any one of < 6 > to < 5 >, wherein the content of the component (C) is preferably 10% by mass or more, more preferably 20% by mass or more, further preferably 30% by mass or more, further preferably 40% by mass or more, and preferably 99% by mass or less, more preferably 97% by mass or less, further preferably 95% by mass or less, further preferably 90% by mass or less.

The human hair fiber treatment agent of any one of < 7 > to < 6 >, wherein glutaraldehyde is preferably further contained.

< 8 > the human hair fiber-treating agent < 7 >, wherein the content of glutaraldehyde is preferably 0.001% by mass or more, more preferably 0.05% by mass or more, still more preferably 0.1% by mass or more, still more preferably 0.5% by mass or more, still more preferably 1.0% by mass or more, and preferably 30% by mass or less, more preferably 20% by mass or less, still more preferably 15% by mass or less, still more preferably 10% by mass or less, still more preferably 5% by mass or less.

The human hair fiber treatment agent of any one of < 9 > to < 8 >, wherein the pH of the human hair fiber treatment agent at 25 ℃ is preferably 6.0 or more, more preferably 6.5 or more, further preferably 7.0 or more, and is preferably 12.0 or less, more preferably 11.5 or less, further preferably 11.0 or less.

< 10 > a method for treating human hair fibers, which comprises the following step (i),

(i) and (b) immersing the human hair fiber having both free ends in the human hair fiber treatment agent of any one of < 1 > -9 > under heating.

< 11 > the human hair fiber treatment method of < 10 > wherein the bath ratio (mass of human hair fiber treatment agent)/(mass of human hair fiber) when human hair fibers are immersed in the human hair fiber treatment agent is preferably 2 or more, more preferably 3 or more, further preferably 5 or more, further preferably 10 or more, further preferably 20 or more, and preferably 500 or less, more preferably 250 or less, further preferably 100 or less.

The human hair fiber treatment method of < 12 > such as < 10 > or < 11 > wherein the temperature of the human hair fiber treatment agent impregnating the human hair fiber is preferably 50 ℃ or more, more preferably 60 ℃ or more, further preferably 80 ℃ or more, and preferably less than 100 ℃, more preferably 99 ℃ or less.

The human hair fiber treatment method of any one of < 13 > to < 12 >, wherein the human hair fiber is immersed in the human hair fiber treatment agent for a period of time of preferably 15 minutes or more, more preferably 30 minutes or more, further preferably 1 hour or more, and preferably 48 hours or less, more preferably 24 hours or less, further preferably 12 hours or less.

< 14 > the method for treating human hair fiber as defined in any one of < 10 > to < 13 >, wherein it is preferable that the following step (ii) is further performed after the step (i),

(ii) a step of impregnating the human hair fiber in a post-crosslinking agent containing a component (D) and a component (C),

(D) the method comprises the following steps A formaldehyde derivative of at least 1 selected from the group consisting of formaldehyde, hydrates of formaldehyde, glyoxylic acid, hydrates of glyoxylic acid, glyoxylate, glyoxal, hydrates of glyoxal, glutaraldehyde and hydrates of glutaraldehyde,

(C) the method comprises the following steps And (3) water.

< 15 > the method for treating human hair fibers < 14 >, wherein the content of the component (D) in the post-crosslinking agent is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, further preferably 1% by mass or more, and preferably 60% by mass or less, more preferably 40% by mass, further preferably 20% by mass or less.

< 16 > the method for treating human hair fibers < 14 > or < 15 >, wherein the pH of the post-crosslinking agent at 25 ℃ is preferably 6.0 or less, more preferably 5.0 or less, further preferably 4.5 or less, and preferably 0 or more, more preferably 0.5 or more, further preferably 1 or more.

The method of treating human hair fibers described in any one of < 17 > to < 14 > to < 16 >, wherein the temperature of the post-crosslinking agent is preferably 40 ℃ or more, more preferably 60 ℃ or more, further preferably 80 ℃ or more, and preferably less than 100 ℃ or more, more preferably 99 ℃ or less.

The human hair fiber treatment method of any one of < 18 > such as < 14 > to < 17 >, wherein a bath ratio (mass of the post-crosslinking agent/mass of the human hair fiber treated in the step (i)) when the human hair fiber is impregnated in the post-crosslinking agent is preferably 2 or more, more preferably 3 or more, further preferably 5 or more, further preferably 10 or more, further preferably 20 or more, and preferably 500 or less, more preferably 250 or less, further preferably 100 or less.

The method of treating human hair fiber described in any one of < 19 > to < 14 > wherein the impregnation time of the human hair fiber in the post-crosslinking agent is preferably 1 minute or more, more preferably 3 minutes or more, further preferably 5 minutes or more, and preferably 5 hours or less, more preferably 3 hours or less, further preferably 1 hour or less.

< 20 > the method for treating human hair fiber according to any one of < 14 > to < 19 >, wherein the following step (iii) is preferably further performed after the step (i) or the step (ii),

(iii) a step of impregnating human hair fibers with a surface treating agent (I) containing a component (E) and a component (C),

(E) the method comprises the following steps A resorcinol derivative represented by the general formula (2),

in the formula, A¹～A⁴The same or different, represents a hydrogen atom, a hydroxyl group, a halogen atom, a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, a linear or branched alkyl or alkenyl group having 1 to 6 carbon atoms, or a linear or branched alkoxy or alkenyloxy group having 1 to 6 carbon atoms,

(C) the method comprises the following steps And (3) water.

< 21 > the method for treating human hair fibers < 20 > wherein the component (E) is at least 1 selected from the group consisting of resorcinol, 2-methylresorcinol, 4-chlororesorcinol and pyrogallol.

< 22 > the method for treating human hair fibers < 20 > or < 21 >, wherein the content of the component (E) in the surface-treating agent (I) is preferably 1% by mass or more, more preferably 2.5% by mass or more, further preferably 5% by mass or more, further preferably 10% by mass or more, further preferably 20% by mass or more, and preferably 98% by mass or less, more preferably 97% by mass or less, further preferably 95% by mass or less, further preferably 93% by mass or less, further preferably 80% by mass or less.

The method of treating human hair fibers of < 23 > such as < 20 > - < 22 >, wherein the pH of the surface-treating agent (I) at 25 ℃ is preferably 7.0 or less, more preferably 6.8 or less, further preferably 6.5 or less, and is preferably 0 or more, more preferably 0.5 or more, further preferably 1.0 or more.

The method of treating human hair fibers described in any one of < 24 > to < 23 >, wherein the temperature of the surface-treating agent (I) is preferably 0 ℃ or more, more preferably 20 ℃ or more, further preferably 40 ℃ or more, and preferably 80 ℃ or less, more preferably 60 ℃ or less.

The human hair fiber treatment method of any one of < 25 > to < 20 > to < 24 >, wherein a bath ratio (mass of the surface-treating agent/mass of the human hair fiber after treatment in the using step (ii)) when the human hair fiber is immersed in the surface-treating agent (I) is preferably 2 or more, more preferably 3 or more, further preferably 5 or more, further preferably 10 or more, further preferably 20 or more, and preferably 500 or less, more preferably 250 or less, further preferably 100 or less.

The method of treating human hair fiber described in any of < 26 > to < 25 >, wherein the immersion time of the human hair fiber in the surface-treating agent (I) is preferably 1 hour or more, more preferably 3 hours or more, further preferably 6 hours or more, further preferably 24 hours or more, and preferably 1 month or less, more preferably 2 weeks or less, further preferably 10 days or less, further preferably 168 hours or less.

< 27 > a method for manufacturing a wig, comprising: and a step of treating the human hair fiber for wig by the human hair fiber treatment method of any one of < 10 > to < 26 >.

< 28 > a human hair fiber treatment agent for treating human hair fibers having free ends at both ends, which comprises the following components (A) to (C) and has a pH of 7.0 to 11,

(A) formaldehyde: 1.5 to 15% by mass,

(B) melamine: 4.2 to 42% by mass,

(C) water: and (4) the balance.

< 29 > a human hair fiber treatment agent kit for treating human hair fibers having free ends at both ends, comprising: < 28 > and a post-crosslinking agent which comprises a component (D) and a component (C) and has a pH of 1.0 to 4.5,

(D) glyoxylic acid or formaldehyde: 1 to 20% by mass of a binder,

(C) water: and (4) the balance.

< 30 > the human hair fiber treatment agent kit as < 29 > wherein it preferably further comprises: a surface treating agent (I) containing a component (E) and a component (C) and having a pH of 1.0 to 6.5,

(E) resorcinol: 20 to 60% by mass of a binder,

(C) water: and (4) the balance.

< 31 > a method for treating human hair fibers, which comprises the following step (i),

(i) immersing the human hair fiber with free ends at two ends in the human hair fiber treating agent for 1-3 hours at a bath ratio of (mass of human hair fiber treating agent)/(mass of human hair fiber) of 20-100 under the heating condition of 90-99 ℃,

the human hair fiber treatment agent contains components (A) to (C) in the composition, and the pH value of the human hair fiber treatment agent is 7.0 to 11.0,

(A) formaldehyde: 1.5 to 15% by mass,

(B) melamine: 4.2 to 42% by mass,

(C) water: and (4) the balance.

< 32 > the method for treating human hair fibers < 31 >, wherein the following step (ii) is preferably further performed after the step (i),

(ii) a step of immersing the human hair fiber treated in the step (i) in a post-crosslinking agent at a bath ratio of (mass of post-crosslinking agent)/(mass of human hair fiber treated in the step (i)) of 20 to 100 at a temperature of 90 to 90 ℃ for 1 to 3 hours,

the post-crosslinking agent contains a component (D) and a component (C), and the pH of the post-crosslinking agent is 1.0 to 4.5,

(D) glyoxylic acid or formaldehyde: 1 to 20% by mass of a binder,

(C) water: and (4) the balance.

< 33 > the method for treating human hair fibers < 32 >, wherein the following step (iii) is preferably further performed after the step (ii),

(iii) a step of immersing the human hair fiber treated in the step (ii) in the surface-treating agent (I) at a bath ratio of (mass of the surface-treating agent (I))/(mass of the human hair fiber treated in the step (ii)) of 20 to 100 at a temperature of 20 to 90 ℃ for 24 to 168 hours,

the surface processing agent (I) contains a component (E) and a component (C), and the pH of the surface processing agent (I) is 1.0 to 6.5,

(E) resorcinol: 20 to 60% by mass of a binder,

(C) water: and (4) the balance.