阅读说明：本技术 头发造型组合物和喷雾系统 (Hair styling compositions and spray systems ) 是由 权秀智 崔化椿 尹正爱 李仁浩 尹圣琇 于 2019-07-16 设计创作，主要内容包括：本申请涉及头发造型组合物。根据本申请的一个实例,提供了头发造型组合物,该头发造型组合物具有很少的成珠现象或剥落现象以及优异的固定头发的造型保持力,并且即使在使用之后也能够提供优异的洗净性。(The present application relates to hair styling compositions. According to an example of the present application, a hair styling composition is provided which has little beading or flaking phenomenon and excellent styling retention to fix hair, and can provide excellent washability even after use.)

1. A hair styling composition comprising a polymer and a solvent,

wherein the polymer comprises a polymer P1 comprising units of formula 1:

[ formula 1]

Wherein the content of the first and second substances,

X₁、X₂、X₃and X₄Each independently of the other being hydrogen or an alkyl group,

R₁and R₂Each being an alkyl group having the same or different carbon atoms,

a is a divalent hydrocarbon group,

n is an integer of 1 to 50,

R₃is a hydrogen or an alkyl group,

M⁺selected from Na⁺、K⁺Imidazole, imidazoleAmmonium, pyridineTriazole compoundsAndand

a. b and c are the average degree of polymerization of each polymerized unit, a, b and c are greater than 0, and the value of a + b + c is from 50 to 1000.

2. The hair styling composition of claim 1, wherein M⁺Is selected from Na⁺、K⁺And quaternary ammonium.

3. The hair styling composition of claim 1, wherein R₃Is hydrogen or methyl.

4. The hair styling composition of claim 1, wherein the polymer P1 has a weight average molecular weight Mw in the range of 5000 to 200000 and a molecular weight distribution PDI in the range of 1.0 to 5.0.

5. The hair styling composition of claim 1, wherein the polymer P1 is included in a range of 0.1 to 30 parts by weight, relative to 100 parts by weight total composition content.

6. The hair styling composition of claim 1, further comprising a polymer P2 different from the polymer P1,

wherein the polymer P2 is selected from: one or more nonionic polymers selected from the group consisting of polyvinylpyrrolidone, polyvinylpyrrolidone/vinyl acetate copolymer, and polyvinylpyrrolidone/dimethylaminoethyl methacrylate copolymer; and one or more amphoteric polymers selected from the group consisting of methacryloylethylbetaine/methacrylate copolymers and octylacrylamide/acrylate/butylaminoethyl methacrylate copolymers.

7. The hair styling composition of claim 6, wherein the weight ratio of the polymer P1 to the polymer P2 is in the range of 1:99 to 99: 1.

8. The hair styling composition of claim 7, wherein the total content of the polymer P1 and the polymer P2 is in the range of 0.1 to 30 parts by weight, relative to 100 parts by weight total composition content.

9. The hair styling composition of claim 1 or 6, wherein the solvent comprises an alcohol or a mixture of an alcohol and water.

10. The hair styling composition of claim 9, wherein the composition comprises the solvent in a range of 100 to 2000 parts by weight, relative to 100 parts by weight of the polymer.

11. The hair styling composition of claim 1 or 6, wherein the composition is an aerosol spray composition sprayed in the gas phase and the composition further comprises one or more materials selected from propane, n-butane, isobutane and dimethyl ether (DME) as propellants.

12. The hair styling composition of claim 11, wherein the composition comprises the propellant in a range of 100 to 1500 parts by weight, relative to 100 parts by weight of the polymer.

13. A spray system for spraying the hair styling composition of claim 1.

Technical Field

Cross Reference to Related Applications

The present application claims rights based on the priority of korean patent application No. 10-2018-0082702, filed on 17.7.2018, the disclosure of which is incorporated herein by reference in its entirety.

Technical Field

The present application relates to hair styling compositions and spray systems.

Background

Various products have been released in connection with hair styling. For example, hair sprays, gels, mousses, hair tonics, and the like are sold. Such products comprise such components (compositions): which contacts the user's hair and then holds the designed hair in the user's desired state for a predetermined period of time.

For example, in hair sprays, the hair spray composition (aerosol) may contain a high pressure gas propellant, solvents and polymers for hair styling, plasticizers, humectants and/or fragrance providing components and the like. The composition is stored in a given injection system. For example, when a user presses an injection button formed on an aerosol container, the composition may be sprayed onto hair in the form of fine particles, foam or liquid carrying gas by a high pressure gas propellant (e.g., LPG), wherein the user can design (or set) the hair having the composition sprayed thereon in a desired shape. The polymer for hair styling in the composition of the composition after spraying the composition is a composition that provides hair styling retention (or holding power) to a user-set portion of hair for a predetermined time. More specifically, when a solvent (e.g., a liquefied gas such as ethanol or LPG) is evaporated after spraying a spray composition onto hair, a polymer for hair setting forms a film on the hair surface, wherein the hair can be fixed in a state set by the hardness of the film.

As the polymer for hair setting which performs the above action, a polymer soluble in water or alcohol is used. For example, polyvinylpyrrolidone, a vinylpyrrolidone/vinyl acetate copolymer, a vinyl acetate/crotonic acid copolymer, an acrylic resin or the like is widely used as a polymer for hair setting. After the polymer is sprayed on the hair, it easily provides a fixing effect to the hair by the specific hardness of the polymer, but it has disadvantages of being excessively hard or coarse and sticky in appearance due to its characteristics of being used with various additives. That is, it does not provide good aesthetics or feel. Such a polymer has reduced flexibility, and therefore when the polymer is subjected to combing after injection or when an external force is applied to fixed hair, white powder (hereinafter, referred to as flaking) is observed while the coated polymer film is broken.

On the other hand, recently, methods have been introduced to use silicone grafted organic backbone polymers in hair styling products. For example, Korean patent laid-open publication Nos. 10-1999-0067122, 10-2001-0030417 and 10-1991-002421 propose techniques for providing hair style retention and improved hair feel using silicone-grafted polymers. However, these compositions are usually sprayed onto hair while the particles sprayed from a container form a foam, so that particles that appear to be, for example, white snowflakes or white beads are sprayed onto black hair (hereinafter, referred to as beading).

Disclosure of Invention

Technical problem

It is an object of the present application to provide a hair styling composition capable of improving flaking and beading.

It is another object of the present application to provide hair styling compositions having excellent aesthetics and feel.

It is another object of the present application to provide hair styling compositions having excellent cleansing characteristics.

It is another object of the present application to provide a hair styling composition for hair sprays.

The above and other objects of the present application are all solved by the present application described in detail below.

Technical scheme

In one example of the present application, the present application relates to hair styling compositions for contacting hair and securing hair in a predetermined shape by an injection, spray or pumping system. The composition provides excellent aesthetic feeling and touch while maintaining a set state formed by a user for a long time, improves beading or flaking phenomenon and provides excellent washing characteristics after use.

The composition comprises a polymer and a solvent.

Specifically, the composition includes a polymer having a unit represented by the following formula 1. Other chains may be attached to both ends of the following formula 1. The polymer having the following composition can provide hair set retention to a hair part set by a user for a predetermined time, and helps to provide excellent solubility to a solvent, uniform coating property to hair, and excellent rinsing property in rinsing hair after use.

[ formula 1]

In the above-mentioned formula 1, the,

X₁、X₂、X₃and X₄Each independently of the other being hydrogen or an alkyl group,

R₁and R₂Each having the same or different carbon atomsThe alkyl group of (a) is,

a is a divalent hydrocarbon (e.g., alkylene or alkylidene),

n is an integer of 1 to 50,

R₃is a hydrogen or an alkyl group,

M⁺selected from Na⁺、K⁺Imidazole, imidazoleAmmonium, pyridineTriazole compoundsAndand

a. b and c are the average degree of polymerization of each polymerized unit, a, b and c are greater than 0, and the value of a + b + c is from 50 to 1000.

Unless otherwise specifically limited in this application, alkyl may mean an alkyl group having 1 to 20 carbon atoms. For example, alkyl may mean an alkyl group having 1 to 16 carbon atoms, 1 to 12 carbon atoms, 1 to 8 carbon atoms, or 1 to 4 carbon atoms. The alkyl group may be linear, branched or cyclic. The alkyl group may be substituted with one or more substituents, or may be in an unsubstituted state.

Further, unless otherwise specifically limited in the present application, an alkylene group or an alkylidene group may mean an alkylene group or an alkylidene group having 1 to 20 carbon atoms, respectively. For example, the alkylene or alkylidene group may be an alkylene or alkylidene group having 1 to 16 carbon atoms, 1 to 12 carbon atoms, 1 to 8 carbon atoms, or 1 to 4 carbon atoms. The alkylene or alkylidene group may be linear, branched, or cyclic. The alkylene or alkylidene group may be substituted with one or more substituents, if necessary.

The polymer is an anionic acrylic polymer. That is, in the polymer having the unit of formula 1, M⁺Having no connection to polymersAnd a structure that is movable when adjusting ion balance.

When the polymerization degree is satisfied, the unit having an average polymerization degree of a, b and c mainly contributes to improvement of beading phenomenon, improvement of flaking phenomenon, improvement of washing property and improvement of solubility of the polymer in a solvent, and the unit having an average polymerization degree of d mainly contributes to imparting solubility in water to the hair at the time of washing after using the styling product. When only one of the units having the average polymerization degrees of a, b, and c is contained, the above-listed improvement effects cannot be displayed in balance.

In one example, X₁、X₂、X₃And X₄May each independently be hydrogen or an alkyl group having 1 to 6 carbon atoms.

In one example, R₁May be an alkyl group having 1 to 4 carbon atoms, and R₂May be an alkyl group having 5 to 20 carbon atoms. For example, R₂May be an alkyl group having a carbon number in the range of 5 to 20, 7 to 18, or 9 to 16. When R is₁And R₂When the carbon numbers of (a) and (b) each satisfy the above range, an appropriate hydrophilic/hydrophobic balance can be achieved in the polymer without interfering with the cleaning characteristics, thereby achieving the object of the present application.

In one example, a may be a divalent hydrocarbon having 1 to 6 carbon atoms. For example, a may be alkylene or alkylidene. When the carbon number of a exceeds the above range, the hydrophobicity becomes excessively strong, and thus the cleaning property deteriorates. For example, a may be ethylene or propylene. In view of such effects, ethylene may be preferable.

In one example, R₃Can be hydrogen, or R₃May be an alkyl group having 1 to 6 carbon atoms. When R is₃When it is hydrogen or an alkyl group having 1 to 6 carbon atoms, the solubility of the polymer in a solvent and the cleaning property can be appropriately ensured.

In another example, R₃May be hydrogen. In another example, R₃May be a short chain alkyl group having a carbon number of 3 or less, 2 or less, or 1. Specific examples of the lower alkyl group may include methyl groups. When R is₃In the case of hydrogen or short chain alkyl groups, it may be advantageous to achieve the desired effect depending on the use of the polymer.

The method for producing the polymer containing the unit of formula 1 above is not particularly limited. For example, when units having a polymerization degree of a, b, c, and D are referred to as A, B, C and D units, respectively, a polymer can be obtained by copolymerizing monomers (referred to as precursor monomers) each capable of providing the units.

The monomer component providing A, B, C and D units can be selected to satisfy X of formula 1 as described above₁To X₄、R₁To R₃A, M +, etc. Examples of monomer components used to prepare polymers for hair styling are as follows.

In one example, as the a and/or B unit precursor monomer, an alkyl (meth) acrylate having an alkyl group containing 1 to 20 carbon atoms may be used. For example, methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, heptyl (meth) acrylate, octyl (meth) acrylate, nonyl (meth) acrylate, hexadecyl (meth) acrylate, lauryl (meth) acrylate, palmityl (meth) acrylate, or stearyl (meth) acrylate may be used. Furthermore, two or more of the foregoing may be used together.

In one example, the number of alkyl groups in the a unit precursor monomer and the B unit precursor monomer may be equal to each other.

In one example, the number of alkyl groups in the a unit precursor monomer and the B unit precursor monomer may be different from each other. For example, as the a unit precursor monomer, an alkyl (meth) acrylate having an alkyl group containing 1 to 4 carbon atoms may be used, and as the B unit precursor monomer, an alkyl (meth) acrylate having an alkyl group containing 5 to 20 carbon atoms may be used. As described above, when the alkyl groups of the monomers for forming the a unit and the B unit are adjusted to be different from each other, an appropriate hydrophobic/hydrophilic balance can be imparted to the polymer, whereby the beading phenomenon and the flaking phenomenon can be improved while having excellent cleaning characteristics.

In one example, the a and/or B unit precursor monomers may be included in an amount of 15 parts by weight or greater, or 20 parts by weight or greater, based on 100 parts by weight of the total monomer components used to form the polymer. Specifically, 25 parts by weight or greater, 30 parts by weight or greater, 35 parts by weight or greater, 40 parts by weight or greater, 45 parts by weight or greater, or 50 parts by weight or greater may be used. The a and/or B unit precursor monomers can then be used in an amount of 85 parts by weight or less, 80 parts by weight or less, 75 parts by weight or less, or 70 parts by weight or less. When it is used in an amount less than the above range, the hydrophilicity of the polymer becomes too strong, and thus, as demonstrated in the following examples, the beading phenomenon is accelerated while the contact angle with water becomes small. The beading phenomenon is a phenomenon in which hairspray particles sprayed into the air are not uniformly spread on the hair surface and are visible upon rounding and agglomeration, and considering that the hydrophobicity of the hair surface is high, it is considered that the beading phenomenon is improved when the hydrophobicity of the polymer is maintained at an appropriate level. Further, when it is used in an amount greater than the above range, the solubility in water is reduced while the hydrophobicity of the polymer becomes too strong, whereby there is a problem that the product is not well washed with water when washed after use.

In one example, the weight ratio of the a unit precursor monomers to the B unit precursor monomers may satisfy a range of 1:10 to 10: 1.

In one example, when the carbon number of the alkyl group in the alkyl (meth) acrylate as the a unit precursor is less than the carbon number of the alkyl group in the alkyl (meth) acrylate as the B unit precursor, the B unit precursor monomer may be used in excess, such as the ratio (Wb/Wa) of the weight (Wb) of the B unit precursor monomer to the weight (Wa) of the a unit precursor monomer is in the range of 1 to 4, 1 to 3.5, 1 to 3, 1 to 2.5, or 1 to 2. When this content range is satisfied, the glass transition temperature of the polymer may be in the range of about-10 ℃ to 70 ℃, preferably 10 ℃ to 50 ℃. When the a unit precursor monomer is used in excess, the hardness may become too strong because the polymer has a rigid characteristic as the glass transition temperature of the polymer increases. When this content range is satisfied, the coatability to hair is excellent. However, when it exceeds the above range, the polymer becomes too hard, so that peeling is promoted, and when it is lower than the above range, the flexible property of the polymer becomes strong, so that the mold holding power is lowered.

As the C unit precursor monomer, for example, hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate, 2-methoxyethyl (meth) acrylate, 2- (2-hydroxyethoxy) ethyl (meth) acrylate, 2- (2-methoxyethoxy) ethyl (meth) acrylate, 2- (2-ethoxyethoxy) ethyl (meth) acrylate, poly (ethylene glycol) mono (alkyl) ether (meth) acrylate, and the like can be used. Furthermore, two or more of the foregoing may be used together. When such monomers are used, it may be advantageous to maintain the hydrophilic/hydrophobic balance of the polymer while maintaining solubility in the solvent. In view of such effects, hydroxyalkyl (meth) acrylates may be preferably used.

In one example, the C unit precursor monomer may be included in an amount of 5 parts by weight or more based on 100 parts by weight of the total monomer components used to form the polymer. Specifically, it may be used in an amount of 10 parts by weight or more, or 15 parts by weight or more. Then, the C unit precursor monomer may be used in an amount of 65 parts by weight or less, 60 parts by weight or less, 55 parts by weight or less, 50 parts by weight or less, 45 parts by weight, 40 parts by weight or less, 35 parts by weight or less, 30 parts by weight or less, 25 parts by weight or less, or 20 parts by weight or less. When it is used in an amount less than the above range, the solubility in a solvent is insufficient, so that, for example, it is not suitable for aerosol formulations and the like required for spray-forming compositions, and therefore, the nozzle clogging phenomenon of a hair spray agent may be aggravated, whereby it is difficult to ensure uniform applicability to hair. In addition, when it is used in an amount greater than the above range, the contact angle with water is lowered, so that the beading phenomenon on the hair surface may be aggravated.

In one example, M is provided by a predetermined process⁺The compounds of (3) may be used in the formation of the D unit. E.g. as D unitsPrecursor monomers, basic compounds (e.g., KOH) and acidic monomers having crosslinkable functional groups, in which M is⁺K of⁺(potassium ions) can be produced by their reaction. Without particular limitation, (meth) acrylic acid may be used as the acidic monomer, and KOH or NaOH may be used as the basic compound for neutralizing the acidic monomer. In addition, when an acidic monomer is neutralized with a compound such as trialkylamine, a quaternary ammonium salt may be produced.

In one example, the D unit precursor monomer may be included in an amount of 1 part by weight or more based on 100 parts by weight of the total monomer components used to form the polymer. Specifically, it may be used in an amount of 5 parts by weight or more, 10 parts by weight or more, or 15 parts by weight or more. Then, the C unit precursor monomer may be used in an amount of 50 parts by weight or less, 45 parts by weight or less, 40 parts by weight or less, 35 parts by weight or less, 30 parts by weight or less, 25 parts by weight or less, 20 parts by weight or less, 15 parts by weight or less, or 10 parts by weight or less. When it exceeds the above range, the solubility in a solvent or gas is low, so that there is a problem that it is difficult to manufacture an aerosol formulation, and when it is less than the above range, sufficient cleaning characteristics cannot be provided.

In one example, the weight average molecular weight (Mw) of the polymer may be in the range of 5000 to 200000. For example, the weight average molecular weight of the polymer may be 6000 or greater, 7000 or greater, 8000 or greater, 9000 or greater, 10000 or greater, 11000 or greater, 12000 or greater, 13000 or greater, 14000 or greater, 15000 or greater, 16000 or greater, or 17000 or greater. Further, for example, the weight average molecular weight of the polymer may be 180000 or less, 150000 or less, 120000 or less, 90000 or less, 60000 or less, or 30000 or less, and specifically, the weight average molecular weight of the polymer may be 25000 or less, 24000 or less, 23000 or less, 22000 or less, 21000 or less, or 20000 or less. In the present application, unless otherwise specified, the weight average molecular weight may be a converted value of standard polystyrene measured using GPC (gel permeation chromatography).

In one example, the molecular weight distribution (PDI ═ Mw/Mn, Mw: weight average molecular weight, Mn: number average molecular weight) of the polymer may be in the range of 1.0 to 5.0. For example, the molecular weight distribution can be 1.1 or greater, 1.2 or greater, 1.3 or greater, 1.4 or greater, or 1.5 or greater. Further, for example, the molecular weight distribution may be 4.9 or less, 4.8 or less, 4.7 or less, 4.6 or less, 4.5 or less, 4.4 or less, 4.3 or less, 4.2 or less, 4.1 or less, 4.0 or less, 3.9 or less, 3.8 or less, 3.7 or less, 3.6 or less, 3.5 or less, 3.4 or less, 3.3 or less, 3.2 or less, 3.1 or less, or 3.0 or less, and specifically, may be 2.5 or less, 2.4 or less, 2.3 or less, 2.2 or less, 2.1 or less, or 2.0 or less.

In one example, the composition may include the polymer (P1) containing the unit of formula 1 above in the range of 0.1 to 30 parts by weight, relative to 100 parts by weight of the entire composition content. For example, the content of the polymer (P1) may be 1 part by weight or more, 2 parts by weight or more, 3 parts by weight or more, 4 parts by weight or more, or 5 parts by weight or more. Alternatively, the content of the polymer within the above range may be 10 parts by weight or more, 15 parts by weight or more, or 20 parts by weight or more.

In one example, the composition can comprise two or more polymers containing units of formula 1 above. For example, the composition can comprise a polymer (P11) comprising units of formula 1 and a polymer (P12) (wherein R is₁Etc. are different from each other). In this case, the polymer (P1) containing the unit of formula 1 above may be used in the range of 0.1 to 30 parts by weight relative to 100 parts by weight of the entire composition content.

In another example, the composition may comprise two or more polymers. For example, the composition may comprise a polymer (P1) comprising units of [ formula 1], and may further comprise a heterogeneous polymer (P2) having a different structure. Heterogeneous polymer (P2) having different structures may mean a polymer that does not contain a unit of [ formula 1 ]. Alternatively, as a concept corresponding to the anionic polymer (P1), the composition may further include a cationic polymer, an amphoteric (or zwitterionic) polymer, or a nonionic polymer as the polymer (P2).

In one example, the composition may also comprise non-ionic polymers, such as polyvinylpyrrolidone, polyvinylpyrrolidone/vinyl acetate copolymer (PVP/VA copolymer) and polyvinylpyrrolidone/dimethylaminoethyl methacrylate copolymer (PVP/dimethylaminoethyl methacrylate copolymer) as polymers (P2).

In another example, the composition may also comprise an amphoteric polymer (P2), such as a methacryloylethylbetaine/methacrylate copolymer, and an octylacrylamide/acrylate/butylaminoethyl methacrylate copolymer.

In another example, it may further comprise two or more of the exemplified polymers (P2).

When the composition comprises both polymer (P1) and polymer (P2), the weight ratio of polymer (P1) to polymer (P2) (P1: P2) may be in the range of 1:99 to 99: 1.

In one example, the polymer (P1) may be used at a content equal to or less than the content of the polymer (P2). Specifically, the weight ratio (P1: P2, parts by weight) between the polymer (P1) and the polymer (P2) may be in the range of 5:95 to 50: 50. Specifically, within the above range, the weight ratio of the polymer (P1) may be 10 parts by weight or more, 15 parts by weight or more, 20 parts by weight or more, 25 parts by weight or more, 30 parts by weight or more, 35 parts by weight or more, 40 parts by weight or more, or 45 parts by weight or more.

In another example, the polymer (P1) may be used in an amount equal to or greater than the amount of the polymer (P2). For example, the weight ratio (P1: P2) between polymer (P1) and polymer (P2) may be in the range of 50:50 to 95: 5. Specifically, within the above range, the weight ratio of the polymer (P1) may be 55 parts by weight or more, 60 parts by weight or more, 65 parts by weight or more, 70 parts by weight or more, 75 parts by weight or more, 80 parts by weight or more, 85 parts by weight or more, or 90 parts by weight or more.

When the polymer (P1) and the polymer (P2) are used together as above, the total content of the polymers used in the composition may be in the range of 0.1 parts by weight to 30 parts by weight, relative to 100 parts by weight of the total composition content. For example, the total content of the polymers may be 1 part by weight or greater, 2 parts by weight or greater, 3 parts by weight or greater, 4 parts by weight or greater, or 5 parts by weight or greater. Alternatively, within the above range, the total content of the polymer may be 10 parts by weight or more, 15 parts by weight or more, or 20 parts by weight or more.

In one example, the composition further comprises a solvent. As the solvent, for example, an alcohol such as ethanol or isopropanol may be used. In addition to this, water may be used. For example, a mixture of water and alcohol may be used as the solvent. When water and alcohol are mixed and used, the content of water with respect to the entire solvent component is preferably 10 parts by weight or less.

In one example, the composition may include the solvent in a range of 100 parts by weight to 2000 parts by weight with respect to 100 parts by weight of the polymer component (P1 and/or P2).

In one example, the composition can satisfy a predetermined contact angle. In particular, the composition may satisfy a contact angle of a water droplet in a range of 90 ° to 120 ° with respect to a coated surface (i.e., a film coated with the composition) formed by the composition. The contact angle can be measured according to the method described in the examples below. When the contact angle is less than the above range, the coating property of the spray composition to the hair may be deteriorated to increase the beading phenomenon, and when the contact angle exceeds the above range, the flaking phenomenon may be increased due to the increase in the hard property of the polymer. Furthermore, as demonstrated in the examples below, polymers with hydrophilic character having too low a contact angle are highly soluble in water, and therefore, are dissolved in water to produce products such as gel products or emulsion products, which have low hardness because they absorb moisture in the air when applied to the hair. On the other hand, since a hydrophobic polymer having a high contact angle has low solubility in water, unlike a hydrophilic polymer, it cannot be used as a gel product or an emulsion product, but is dissolved in ethanol or LPG instead of water to produce a product as a hairspray having the highest hardness of a hair product. Strong hydrophobicity lowers detergency and excessively high hardness easily causes a peeling phenomenon.

In one example, the composition may be an aerosol spray composition that is sprayed in a gas phase. That is, the composition may comprise a high pressure gas propellant capable of ejecting an aerosol. The type of propellant is not particularly limited, but it may include, for example, one or more of propane, n-butane, isobutane, and dimethyl ether (DME).

In one example, the composition may include a propellant in a range of 100 parts by weight to 1500 parts by weight, relative to 100 parts by weight of the polymer component (P1 and/or P2).

In one example, the composition may further comprise a plasticizer. The kind of the plasticizer is not particularly limited, and for example, a known plasticizer such as an organosilicon compound or 2-amino-2-methyl-1-propanol can be used without limitation.

In one example, the composition may further comprise a humectant. The kind of the humectant is also not particularly limited, and for example, a known material such as propylene glycol can be used without limitation.

In addition, the composition may also contain additives (pH adjusters, fragrances, sunscreens, etc.) that provide moisturization, conditioning and/or fragrancing to the hair.

In another example of the present application, the present application relates to a hair spray injection system. An injection system is used to inject the composition, which may be configured such that the composition may be ejected without clogging the valve.

Specifically, a system configured to inject a composition for hair setting in the form of an aerosol by high-pressure gas has holes, i.e., orifices, of various sizes so that the composition can be moved and sprayed. Therefore, it is important to appropriately set the size of the orifice according to the composition to be sprayed. That is, according to the proper design of the orifice, the injection amount of the composition, the size of the particles to be sprayed, the injection shape such as the injection width, and the like are determined, and thus, the function of the entire product for spraying the hair styling agent is affected.

With respect to the description of the orifice in one exemplary injection system, and with reference to fig. 1, when a user presses a button (actuator), the hairspray composition in the container is formed into fine particles (breaks) as it moves through the propellant inside the valve and through the orifices (e.g., valve body orifice, vapor-emitting orifice, and valve stem orifice) and is sprayed toward the hair in a manner that expels the final particulate composition from the button orifice (actuator orifice). Therefore, by appropriately designing the orifice so as not to interfere with such hair composition injection process, the size or injection width, etc. of the particles to be sprayed should be appropriately formed without clogging the valve. In particular, if the injection amount is too large, beading and flaking may be aggravated, and the user's hair may be tufted. Furthermore, if the size of the sprayed particles is too small, the particles are blown excessively, and thus there is a risk that the user may inhale the hair composition into the nose.

The present application provides an injection system in which a hair setting effect can be sufficiently performed without such a problem.

The system may have a button port (actuator port), a valve stem port, a valve body port, and a vapor vent port (vapor tap installation).

In addition, the system includes a channel or container through which the composition can be stored, and a tube.

A predetermined pressure may be established inside the system.

In one example, the diameter of the button aperture may be 0.3mm or greater, 0.4mm or greater, or 0.5mm or greater. Further, the upper limit of the diameter of the button aperture may be, for example, 0.7mm or less, or 0.6mm or less.

In one example, the system may have one or more valve stem orifices. For example, the system may have two or more valve stem orifices.

In one example, the diameter of the valve stem orifice may be 0.3mm or greater, 0.4mm or greater, or 0.5mm or greater. Further, the upper limit of the diameter of the stem orifice may be, for example, 0.7mm or less, or 0.6mm or less.

In one example, the valve body orifice may be 0.5mm or greater, 0.6mm or greater, or 0.7mm or greater in diameter. Further, the upper limit of the diameter of the valve body orifice may be, for example, 1mm or less, 0.9mm or less, or 0.8mm or less.

In one example, the diameter of the vapor-emitting orifice may be, for example, 0.6mm or less, 0.5mm or less, 0.4mm or less, or 0.3mm or less, and substantially 0 mm. Alternatively, the vapor-emitting orifices may not have a diameter.

When the system is designed to have the number and/or diameter of the orifices as above, the above problems can be solved and an excellent user experience can be provided.

Advantageous effects

The application can solve the problems of the prior art. For example, according to one example of the present application, a hair styling composition having little beading or flaking phenomenon and excellent styling retention for fixing hair can be provided. Furthermore, the composition can provide excellent detergency even after the use of the hair styling product.

Drawings

Fig. 1 is a schematic diagram of a spray system.

100: spraying system

10: button orifice

20: valve stem orifice

30: vapor vent orifice

40: valve body orifice

50: container with a lid

60: dip tube

70: mixture of composition and propellant

80: internal pressure

Detailed Description

Hereinafter, the present application will be described in detail by examples. However, the scope of protection of the present application is not limited by the following examples.

< method for measuring physical Properties >

Measurement of contact Angle

The contact angle was measured using a contact angle measuring instrument (attention Theta Lite, Biolin Scientific). Specifically, 1g of each composition compounded as shown in Table 1 was coated to a uniform thickness (120 μm) on an acrylic plate having a width of 6cm, a length of 4cm and a height of 0.3 cm. Immediately after dropping a 4mg water droplet on the coating surface, the contact angle of the water droplet with the coating surface was measured at intervals of 1 second for 1 minute, and an average value was obtained. The above calculation was repeated three times while setting the coating surface positions to be different from each other, and an average value was obtained. The contact angle means an angle formed by tangents of a liquid and a solid surface at a contact point 3 of the solid (polymer coating surface), the liquid (water droplet), and the gas (air). The properties of the polymer coating surface were determined from the contact angle as follows. The results are shown in Table 2.

-less than 50 °: hydrophilic polymer having weak hardness and strong solubility in water

-50 ° or more to less than 90 °: moderate hardness due to poor hydrophobicity, and moderate solubility in water

-90 ° or more to less than 120 °: hydrophobic, high hardness and low solubility in water

-120 ° or more: strong hydrophobicity, very high hardness, unsuitability for use in hair products

Bead formation evaluation

Two hundred evaluators actually using the hair spray product were allowed to use the hair spray compositions formulated in the examples and comparative examples. Sensory testing was performed. Specifically, the case where no injection particle (beading) was present at the time of injection was evaluated as 10 points, the case where a very large injection particle (beading) in the form of beads was present was evaluated as 1 point, and the average point of each of the examples and comparative examples was recorded. The results are shown in Table 2.

-7 to 10 points (good): without beading

-4 to 6 points (normal): beading occurred, but not so much

-1 to 3 points (difference): severe beading occurs

Evaluation of exfoliation

Two hundred evaluators actually using the hair spray product were allowed to use the hair spray compositions formulated in the examples and comparative examples. Sensory testing was performed. Specifically, the case where white powder was not clearly observed on the hair (flaking) was evaluated as 10 points, the case where white powder was excessively observed (flaking) was evaluated as 1 point, and the average point of each of the examples and comparative examples was recorded. The results are shown in Table 2.

-7 to 10 points (good): without flaking off

-4 to 6 points (normal): flaking occurs, but not so much

-1 to 3 points (difference): exfoliation seriously occurs

< examples and comparative examples >

Production of polymers

Production example 1

Production of Polymer (A1): in a 1L round bottom flask, 20g of Butyl Methacrylate (BMA), 55g of Lauryl Methacrylate (LMA), 19g of 2-hydroxyethyl methacrylate (HEMA), 6g of methacrylic acid (MAA) and 400g of ethanol were placed and the flask was sealed, followed by nitrogen bubbling for 30 minutes with stirring. The flask was immersed in an oil bath at 70 ℃, and 2g of azobis (isobutyronitrile) (AIBN) was introduced thereto and allowed to react for 24 hours (Mw was 18000 and Mw/Mn was 1.73 in the molecular weight of the produced polymer). 3.9g of KOH was introduced thereinto to neutralize the acid groups.

Production example 2

Production of Polymer (A2): in a 1L round bottom flask, 20g of Butyl Methacrylate (BMA), 60g of Lauryl Methacrylate (LMA), 14g of poly (ethylene glycol) monomethyl ether methacrylate (mPEGMA, Mw 500), 6g of methacrylic acid (MAA) and 400g of ethanol were placed and the flask was sealed, followed by nitrogen bubbling with stirring for 30 minutes. The flask was immersed in an oil bath at 70 ℃, and 2g of azobis (isobutyronitrile) (AIBN) was introduced thereto and allowed to react for 24 hours (in the molecular weight of the produced polymer, Mw was 19000 and Mw/Mn was 1.71). 3.9g of KOH was introduced thereinto to neutralize the acid groups.

Production example 3

Production of Polymer (A3): in a 1L round bottom flask, 20g of Butyl Methacrylate (BMA), 55g of hexadecyl methacrylate (HDMA), 19g of poly (ethylene glycol) monomethyl ether methacrylate (mPEGMA, Mw 500), 6g of methacrylic acid (MAA) and 400g of ethanol were placed and the flask was sealed, followed by nitrogen bubbling for 30 minutes with stirring. The flask was immersed in an oil bath at 70 ℃, and 2g of azobis (isobutyronitrile) (AIBN) was introduced thereto and allowed to react for 24 hours (Mw was 13000 and Mw/Mn was 1.68 in the molecular weight of the produced polymer). 3.9g of KOH was introduced thereinto to neutralize the acid groups.

Production example 4

Polymer (B1): copolymers under the trade name amphomer (akzo nobel) are used as zwitterionic polymers and are copolymers of octylacrylamide, acrylic acid esters and butylaminoethyl methacrylate.

Production example 5

Polymer (B2): unlike the examples, a copolymer under the trade name Mihapol PAH-50(Miwon Commercial Co.) was used as the anionic polymer without the b units of the polymer in the examples and was an AMP-acrylate copolymer.

Production example 6

Polymer (B3): a copolymer under the trade name Plasize L-301(GOO Chemical) was used as the nonionic polymer and was a copolymer of hydroxyethyl acrylate, methoxyethyl acrylate, and butyl acrylate.

Examples and comparative examples

Preparation of the composition: the components were formulated in the ratios described in table 1 below to prepare compositions for aerosol hairsprays. The results of measuring physical properties of examples and comparative examples are shown in Table 2.

[ Table 1]

[ Table 2]

As shown in table 2, it can be seen that the compositions configured to include a predetermined polymer as in examples 1 to 5 provide effects of good beading phenomenon and good peeling phenomenon due to the polymer having an appropriate level of hardness. Further, it can be seen that the composition of the above example may have excellent coating characteristics to hair since the contact angle of the water droplet with respect to the polymer coating layer satisfies 90 ° to 120 °. However, it can be seen that the compositions of comparative examples 1 to 3 could not improve the beading phenomenon and the flaking phenomenon.