阅读说明：本技术 涂布用固化性组合物和层叠体 (Curable composition for coating and laminate ) 是由 小山雄司 冈本秀二 于 2018-05-24 设计创作，主要内容包括：本发明的技术问题是提供一种涂布用固化性组合物,该组合物即使在针对聚烯烃等低表面能原材料的基材形成涂膜时,与基材的密合性也优良,涂膜的表面固化性也优良。本发明的涂布用固化性组合物是含有聚合物(a)、单体(b)和固化用催化剂(c)的组合物,上述固化用催化剂(c)是有机硼烷-胺络合物(c-1)或过渡金属的羧酸盐与具有叔氨基的多胺的混合物(c-2),且以特定量包含各成分。(The present invention has an object to provide curable compositions for coating, which are excellent in adhesion to a substrate and surface curability of a coating film even when the coating film is formed on a substrate made of a low surface energy material such as polyolefin, and which are a composition comprising a polymer (a), a monomer (b), and a curing catalyst (c) which is a mixture (c-2) of an organoborane-amine complex (c-1) or a carboxylate of a transition metal and a polyamine having a tertiary amino group, and which contains the respective components in specific amounts.)

1, curable compositions for coating, which contain 25 to 95 parts by mass of a polymer (a) having an unsaturated bond, 5 to 75 parts by mass of a monomer (b) having a polymerizable unsaturated group, and a curing catalyst (c), wherein the total of the polymer (a) and the monomer (b) is 100 parts by mass,

the curing catalyst (c) is an organoborane-amine complex (c-1) or a mixture (c-2) of a carboxylic acid salt of a transition metal and a polyamine having a tertiary amino group,

when the curing catalyst (c) is the organoborane-amine complex (c-1), the organoborane-amine complex (c-1) is contained in an amount of 0.001 to 0.1 mol per 100g of the total of the (a) and the (b),

in the case where the curing catalyst (c) is a mixture (c-2) of the transition metal carboxylate and the polyamine having a tertiary amino group, the total content of the transition metal carboxylate and the polyamine having a tertiary amino group is 0.001 to 0.1 mol per 100g of the total of the (a) and (b), the molar ratio of the transition metal carboxylate to the polyamine having a tertiary amino group, that is, the ratio of the transition metal carboxylate to the polyamine having a tertiary amino group is 1:0.05 to 1:5,

when the polymer (a) has an acid value of less than 0.1mg-KOH/g, the monomer (b) having a polymerizable unsaturated group has no acid group, and the curing catalyst (c) is an organoborane-amine complex (c-1), the composition contains the compound (d) having an acid group under the condition that the molar ratio c-1: d of the organoborane-amine complex (c-1) to the compound (d) having an acid group is in the range of 1:0.01 to 1: 5.

2. The curable composition for coating according to claim 1, wherein the polymer (a) is an unsaturated polyester resin.

A laminate of claim 3 and , which is characterized by comprising a substrate and a coating film of the curable composition for coating of claim 1 or 2 formed adjacent to the substrate.

4. The laminate of claim 3, wherein the substrate is a substrate of a low surface energy starting material.

5. The laminate of claim 4, wherein the low surface energy starting material is a polyolefin.

Technical Field

The present invention relates to a curable composition for coating and a laminate.

Background

In recent years, studies on replacement of a metal with a resin material, and a structure and a molded article using the resin material have been actively conducted, and among these, a material and a material having affinity for polyolefin such as polypropylene have been attracting attention.

However, in the case of the conventional coating agent, although the wettability of the liquid and the curability of the coating film can be controlled when the polyolefin is coated, the improvement of the adhesion to the surface becomes a large problem, and studies have been made on the use of various materials and materials. However, sufficient characteristics have not been developed yet, and improvement is required.

Patent document 1 proposes kinds of thermosetting resin compositions characterized by curing a polymer component (a) having 2 or more polymerizable substituents and a compound (B) having 1 or more polymer substituents with a living polymerization initiator (C), and patent document 1 discloses electrical insulation and fixation of coils for electric devices such as motors and transformers.

Disclosure of Invention

Technical problem to be solved by the invention

The technical problem of the invention is to provide kinds of curable compositions for coating, the composition has excellent adhesion with a substrate and excellent surface curability of the coating even when the coating is formed on the substrate of a low surface energy material such as polyolefin.

Technical scheme for solving technical problem

The present inventors have conducted intensive studies to solve the above-mentioned problems. As a result, they have found that the above-mentioned technical problems can be solved by a curable composition for coating having the following configuration, and have completed the present invention.

The present invention is, for example, the following [1] to [5 ].

[1] curable composition for coating, which contains 25-95 parts by mass of a polymer (a) having an unsaturated bond, 5-75 parts by mass of a monomer (b) having a polymerizable unsaturated group, and a curing catalyst (c), wherein the total of the polymer (a) and the monomer (b) is 100 parts by mass,

the curing catalyst (c) is an organoborane-amine complex (c-1) or a mixture (c-2) of a carboxylic acid salt of a transition metal and a polyamine having a tertiary amino group,

when the organoborane-amine complex (c-1) is used as the curing catalyst (c), the organoborane-amine complex (c-1) is contained in an amount of 0.001 to 0.1 mol per 100g of the total of the organoborane-amine complex (a) and the organoborane-amine complex (b),

in the case where the curing catalyst (c) is a mixture (c-2) of the transition metal carboxylate and the polyamine having a tertiary amino group, the total content of the transition metal carboxylate and the polyamine having a tertiary amino group is 0.001 to 0.1 mol per 100g of the total of the (a) and (b), the molar ratio of the transition metal carboxylate to the polyamine having a tertiary amino group, that is, the ratio of the transition metal carboxylate to the polyamine having a tertiary amino group is 1:0.05 to 1:5,

when the polymer (a) has an acid value of less than 0.1mg-KOH/g, the monomer (b) having a polymerizable unsaturated group has no acid group, and the curing catalyst (c) is an organoborane-amine complex (c-1), the composition contains the compound (d) having an acid group under the condition that the molar ratio c-1: d of the organoborane-amine complex (c-1) to the compound (d) having an acid group is in the range of 1:0.01 to 1: 5.

[2] The curable composition for coating according to [1], wherein the polymer (a) is an unsaturated polyester resin.

[3] A laminate comprising a substrate and a coating film of the curable composition for coating of [1] or [2] formed adjacent to the substrate.

[4] The laminate according to [3], wherein the substrate is a substrate of a low surface energy raw material.

[5] The laminate according to [4], wherein the low surface energy raw material is a polyolefin.

Effects of the invention

The present invention can provide curable compositions for coating, which have excellent adhesion to a substrate and excellent surface curability of a coating film even when the coating film is formed on a substrate made of a low surface energy material such as polyolefin.

Detailed Description

The curable composition for coating of the present invention will be described below. Hereinafter, the curable composition for coating of the present invention is also simply referred to as "composition". Acrylic acid and methacrylic acid are collectively referred to as "(meth) acrylic acid", and acrylate and methacrylate are collectively referred to as "(meth) acrylate".

< curable composition for coating >

The composition of the present invention contains a specific polymer (a) (hereinafter, also simply referred to as "polymer (a)"), a specific monomer (b) (hereinafter, also simply referred to as "monomer (b)"), and a specific curing catalyst (c) (hereinafter, also simply referred to as "curing catalyst (c)") described below. The composition of the present invention contains a specific compound (d) described below (hereinafter, also simply referred to as "compound (d)") as an essential component in the following specific cases. In addition, the composition of the present invention may further contain other components as necessary.

[ Polymer (a) ]

The polymer (a) has an unsaturated bond.

The unsaturated bond of the polymer (a) is preferably a polymerizable carbon-carbon double bond. The polymerizable carbon-carbon double bond is also referred to as an ethylenically unsaturated bond.

Examples of the polymer (a) include unsaturated polyester resins, vinyl ester resins, diallyl phthalate prepolymers, urethane (meth) acrylate resins, polyester (meth) acrylate resins, polybutadiene, polyisoprene, isoprene-isobutylene copolymers, and acrylonitrile-butadiene copolymers. The polymer (a) may be used in 1 kind or 2 or more kinds. As the polymer (a), an unsaturated polyester resin, a diallyl phthalate prepolymer, an isoprene-isobutylene copolymer, an acrylonitrile-butadiene copolymer are preferable, and among them, an unsaturated polyester resin is particularly preferable because it can simultaneously achieve surface curability and film-forming property of a coating film required to exhibit adhesion to a low surface energy substrate.

The unsaturated polyester resin is not particularly limited, and can be obtained by, for example, subjecting a polybasic acid such as a dibasic acid to a condensation reaction with a polyhydric alcohol.

The polybasic acid is preferably a dibasic acid, and specific examples thereof include α -unsaturated dibasic acids such as maleic acid, maleic anhydride, fumaric acid, itaconic acid, and itaconic anhydride, saturated dibasic acids such as phthalic acid, phthalic anhydride, halophthalic anhydride, isophthalic acid, terephthalic acid, tetrahydrophthalic anhydride, hexahydrophthalic acid, hexahydroisophthalic acid, hexahydroterephthalic acid, cyclopentadiene-maleic anhydride adduct, succinic acid, malonic acid, glutaric acid, adipic acid, sebacic acid, 1, 10-sebacic acid, 2, 6-naphthalenedicarboxylic acid, 2, 7-naphthalenedicarboxylic acid, 2, 3-naphthalenedicarboxylic anhydride, 4' -biphenyldicarboxylic acid, and dialkyl esters thereof, but the polybasic acid is not limited thereto, and 1 kind of dibasic acid may be used alone, or 2 or more kinds of dibasic acids may be used.

Examples of the polyhydric alcohol include ethylene glycols such as ethylene glycol, diethylene glycol and polyethylene glycol, propylene glycols such as propylene glycol, dipropylene glycol and polypropylene glycol, 2-methyl-1, 3-propanediol, 1, 3-butanediol, adducts of bisphenol a and propylene oxide or ethylene oxide, glycerin, trimethylolpropane, 1, 3-propanediol, 1, 2-cyclohexanediol, 1, 3-cyclohexanediol, 1, 4-cyclohexanediol, p-xylylene glycol, dicyclohexyl-4, 4' -diol, 2, 6-decahydronaphthalene diol and tris (2-hydroxyethyl) isocyanurate.

The polyol may be used in 1 kind, or 2 or more kinds. Further, modification based on an epoxy resin, diisocyanate, dicyclopentadiene, or the like may be performed as necessary.

The vinyl ester resin is not particularly limited, and examples thereof include epoxy (meth) acrylate, and polyester (meth) acrylate obtained by reacting an epoxy compound containing α or β -unsaturated carboxylic acid ester groups with a polyester having a carboxyl group at the terminal.

The diallyl phthalate prepolymer is not particularly limited, and may be a prepolymer obtained by polymerizing diallyl phthalate or copolymerizing diallyl phthalate with another monomer as necessary.

The urethane (meth) acrylate resin is not particularly limited, and can be obtained, for example, by reacting a polyisocyanate with a polyol or a polyol, and then further reacting a hydroxyl group-containing (meth) acrylic compound with a hydroxyl group-containing allyl ether compound used as needed, or reacting a hydroxyl group-containing (meth) acrylic compound with a polyol or a polyol, and then reacting the resulting product with a polyisocyanate.

The polyester (meth) acrylate resin is not particularly limited, and can be obtained, for example, by reacting a (meth) acrylic compound with an end of an unsaturated or saturated polyester.

The conditions for mixing the raw materials and the reaction conditions for obtaining the polymer (a) are not particularly limited as long as they are appropriately adjusted.

The weight average molecular weight (Mw) of the polymer (a) measured by gel permeation chromatography (GPC method) is preferably 800 to 150000 in terms of polystyrene. When Mw is within the above range, it is preferable from the viewpoint of simultaneously achieving surface curability and film forming ability of a coating film required for exhibiting substrate adhesion.

The polymer (a) preferably has a molecular weight distribution (weight average molecular weight (Mw)/number average molecular weight (Mn)) measured by GPC measurement of 1.0 to 20.0, more preferably 1.5 to 18.0, and further preferably is 1.5 to 15.0.

The acid value of the polymer (a) is preferably 0 to 70.0mg-KOH/g, more preferably 0 to 55.0 mg-KOH/g. Within the above range, good compatibility with the monomer and the curing catalyst and good solubility in a solvent are easily obtained, and therefore, the preferred range is.

As the polymer (a), commercially available products can be used, and as the commercially available products, for example, as the unsaturated polyester, rigalac manufactured by showa electric corporation, ポリホープ manufactured by japan composite material corporation (ジャパンコンポジット), U-Pica manufactured by japan ubijia corporation (japan ユピカ); examples of the diallyl phthalate prepolymer include DAISO DAP and DAISO DAP manufactured by osaka corporation (osaka ソーダ); examples of the isoprene-isobutylene copolymer include JSR BUTYL available from JSR corporation; the acrylonitrile-butadiene copolymer may, for example, be Nipol NBR available from Ration corporation of Japan.

[ monomer (b) ]

The curable composition for coating of the present invention contains a monomer (b) having a polymerizable unsaturated group, and the composition of the present invention can form a coating film on the surface of a substrate or the like by polymerizing the monomer (b) with the polymer (a) .

Examples of the monomer (b) include (meth) acrylic monomers and monomers other than (meth) acrylic monomers. Here, the (meth) acrylic monomer is a monomer having an acryloyl group (H)₂C ═ CH-CO-) or methacryloyl (H)₂C＝CCH₃-CO-.

As the (meth) acrylic monomer, at least kinds of monomers selected from acrylic monomers and methacrylic monomers can be used.

Examples of the (meth) acrylic monomer include a (meth) acrylic monomer having a polar group and a (meth) acrylic monomer having no polar group.

As the polar group, at least atoms selected from oxygen, nitrogen and sulfur are preferably contained, and at least atoms selected from oxygen and nitrogen are more preferably contained.

The (meth) acrylic monomer having a polar group may, for example, be an oxygen-containing (meth) acrylic monomer, a nitrogen-containing (meth) acrylic monomer or a sulfur-containing (meth) acrylic monomer, and preferably an oxygen-containing (meth) acrylic monomer or a nitrogen-containing (meth) acrylic monomer.

Examples of the oxygen-containing (meth) acrylic monomer include tetrahydrofurfuryl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, glycidyl (meth) acrylate, methoxyethyl (meth) acrylate, phenoxyethyl (meth) acrylate, (3-ethyloxetan-3-yl) methyl (meth) acrylate, pentaerythritol di (meth) acrylate, pentaerythritol tri (meth) acrylate, (meth) acrylic acid, β -carboxyethyl acrylate, 2-acryloyloxyethyl-succinate, 2-acryloyloxyethyl-phthalate, 2-acryloyloxyethyl acid phosphate, 3- (meth) acryloyloxypropyltrimethoxysilane, and 3- (meth) acryloyloxypropyltriethoxysilane.

Examples of the nitrogen-containing (meth) acrylic monomer include dimethylaminoethyl (meth) acrylate, diethylaminoethyl (meth) acrylate, acrylamide, dimethyl (meth) acrylamide, and (meth) acryloylmorpholine.

Examples of the sulfur-containing (meth) acrylic monomer may include 2-methylthioethyl (meth) acrylate.

Examples of the (meth) acrylic monomer having no polar group include (meth) acrylates. Specifically, the acrylic acid may include monofunctional (meth) acrylates such as methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, isooctyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, lauryl (meth) acrylate, stearyl (meth) acrylate, cyclohexyl (meth) acrylate, dicyclopentanyl (meth) acrylate, dicyclopentenyl (meth) acrylate, isobornyl (meth) acrylate and benzyl (meth) acrylate; polyfunctional (meth) acrylates such as pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) acrylate, 1, 2-ethylene glycol di (meth) acrylate, 1, 6-hexanediol di (meth) acrylate, 12-dodecanediol di (meth) acrylate, trimethylolpropane tri (meth) acrylate, tetramethylolmethane tri (meth) acrylate, butyl di (meth) acrylate, and hexyl di (meth) acrylate.

The (meth) acrylic acid monomer may be used alone in 1 kind, or may be used in 2 or more kinds.

Examples of the monomer other than the (meth) acrylic monomer include vinyl esters such as vinyl acetate and vinyl propionate, unsaturated carboxylic acid compounds such as maleic acid and fumaric acid, unsaturated carboxylic anhydride compounds such as maleic anhydride and fumaric anhydride, olefins such as ethylene, propylene and isobutylene, halogenated olefins such as vinyl chloride and vinylidene chloride, styrene monomers such as styrene, α -methylstyrene and divinylbenzene, diene monomers such as butadiene, isoprene and chloroprene, allyl monomers such as diallyl phthalate and diallyl isophthalate, and N-phenylmaleimide.

The monomer other than the (meth) acrylic acid monomer may be used alone in 1 kind, or may be used in 2 or more kinds.

The monomer (b) is preferably compatible with the polymer (a) and the curing catalyst (c), and although the detailed mechanism is not clear, tetrahydrofurfuryl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, benzyl (meth) acrylate, cyclohexyl (meth) acrylate, styrene, N-phenylmaleimide, maleic acid, and maleic anhydride are particularly preferable from the viewpoint of obtaining good curability and substrate adhesion.

[ curing catalyst (c) ]

The curable composition for coating of the present invention contains a curing catalyst (c). The composition of the present invention starts curing of the composition by generating radicals from the curing catalyst (c) to cause polymerization reaction of the polymer (a) and the monomer (b).

The curing catalyst (c) is an organoborane-amine complex (c-1) or a mixture (c-2) of a carboxylic acid salt of a transition metal and a polyamine having a tertiary amino group. The following description will be made in order.

(organoborane-amine Complex (c-1))

The organoborane-amine complex (c-1) means a complex formed from an organoborane and an amine. The organoborane constituting the organoborane-amine complex (c-1) may, for example, be a organoborane prepared by polymerizing BR₃The compound shown in the specification. In the formula, R independently represents alkyl, cycloalkyl, alkoxy or phenyl with 1-8 carbon atoms.

Examples of the organoborane include triethylborane, tributylborane, trihexylborane and monomethoxydiethylborane. As the organoborane, alkylborane is preferable because good curability and substrate adhesion in the atmosphere can be obtained.

The amine of the organoborane-amine complex need only have at least 1 amino group in the molecule, preferably 2 or 3 amino groups.

Examples of the amine include -membered amines such as diethylamine, dibutylamine, triethylamine and methoxypropylamine, and polyamines such as 1, 3-diaminopropane and diethylenetriamine.

The organoborane-amine complex may be not only the complex formed by the organoborane and the amine described above but also a complex having the organoborane and the amine in the same molecule and forming a complex in the same molecule.

[ solution 1]

In the formula (A), an arrow extending from N to B represents a coordinate bond.

Specific examples of the organoborane-amine complex include triethylborane-1, 3-diaminopropane complex, triethylborane-diethylenetriamine complex, and tri-n-butylborane-3-methoxy-1-propylamine complex.

The organoborane-amine complex may be used alone in 1 kind, or in 2 or more kinds.

(mixture (c-2) of carboxylate of transition metal and polyamine having tertiary amino group)

In the present invention, as the curing catalyst (c), a mixture (c-2) of a carboxylate of a transition metal and a polyamine having a tertiary amino group may be used in place of the organoborane-amine complex (c-1).

Examples of the transition metal constituting the carboxylate of the transition metal include iron, copper, zinc, nickel, cobalt, manganese and chromium, and iron or copper is preferable. That is, as the carboxylate of the transition metal, iron carboxylate and copper carboxylate are preferable.

The valence number of the metal constituting the carboxylate of the transition metal is usually 2 or less, preferably 1 or 2. The metal is preferably 2 valent when it is iron, and is preferably 1 valent when it is copper.

Examples of the carboxylate of the transition metal include acetate of the transition metal, formate of the transition metal, oxalate of the transition metal, stearate of the transition metal, 2-ethylhexanoate of the transition metal, naphthenate of the transition metal, and benzoate of the transition metal, preferably acetate of the transition metal and formate of the transition metal, and more preferably acetate of the transition metal.

In addition, the carboxylate salt of the transition metal may be included in the adhesive composition in a hydrate form.

Specific examples of the transition metal carboxylate Include Iron (II) acetate, copper (I) acetate, iron (II) formate, copper (I) formate, iron (II) oxalate, copper (I) oxalate, iron (II) stearate, copper (I) stearate, iron (II) bis (2-ethylhexanoate), copper (I) bis (2-ethylhexanoate), iron (II) naphthenate, and copper (I) naphthenate, with iron (II) acetate, copper (I) acetate, and iron (II) formate being preferred, and iron (II) acetate and copper (I) acetate being more preferred.

The transition metal carboxylate may be used alone in 1 kind, or may be used in 2 or more kinds.

The polyamine having a tertiary amino group has 2 or more amines in the molecule.

The polyamine having a tertiary amino group has 2 or more amines in the molecule, but usually has 2 to 6 amines in the molecule, preferably 2 to 4, and more preferably 2 or 3. It is preferable that the amount of the amine contained in the molecule of the polyamine is within the above range because sufficient curability and good adhesiveness can be exhibited.

The polyamine having a tertiary amino group has at least 1 tertiary amino group, more preferably at least 2 tertiary amino groups, and further step preferably has at least 2 tertiary amino groups and has no primary amino group and no secondary amino group.

Examples of the polyamine having a tertiary amino group include N, N, N ', N' -tetramethylethylenediamine, N, N, N ', N' -pentamethyldiethylenetriamine, tris [2- (dimethylamino) ethyl ] amine, N, N-dimethyl-1, 2-ethylenediamine, 1,4,7,10, 10-hexamethyltriethylenetetramine, 1,4,8, 11-tetramethyl-1, 4,8, 11-tetraazacyclotetradecane, tris (2-pyridylmethyl) amine, N, N, N ', N' -tetrakis (2-pyridylmethyl) ethylenediamine, preferably N, N, N ', N' -tetramethylethylenediamine, N, N, N ', N' -pentamethyldiethylenetriamine, tris [2- (dimethylamino) ethyl ] amine.

The polyamine having a tertiary amino group may be used alone in 1 kind, or 2 or more kinds may be used.

The combination of the transition metal carboxylate and the polyamine having a tertiary amino group is not particularly limited, but examples of the mixture (c-2) include a mixture of iron (II) acetate and N, N ' -tetramethylethylenediamine, a mixture of iron (II) acetate and N, N ', N "-pentamethyldiethylenetriamine, a mixture of iron (II) acetate and tris [2- (dimethylamino) ethyl ] amine, a mixture of copper (I) acetate and N, N ', N" -pentamethyldiethylenetriamine, and a mixture of copper (I) acetate and tris [2- (dimethylamino) ethyl ] amine.

[ Compound (d) having an acid group ]

In the curable composition for coating of the present invention, when the acid value of the polymer (a) is less than 0.1mg-KOH/g, the monomer (b) having a polymerizable unsaturated group does not have an acid group, and the curing catalyst (c) is the organoborane-amine complex (c-1) (hereinafter, also referred to as "the case where the condition (X) is satisfied"), the curable composition for coating contains a compound (d) having an acid group as an essential component.

In the curable composition for coating of the present invention, when the acid value of the polymer (a) is less than 0.1mg-KOH/g, the monomer (b) having a polymerizable unsaturated group does not have an acid group, and the curing catalyst (c) is other than the case (X) where the organoborane-amine complex (c-1) is used (hereinafter, also referred to as "the case where the condition (X) is not satisfied"), the curable composition for coating may contain a compound (d) having an acid group as an optional component.

The compound (d) having an acid group is a compound having an acid group in its molecule, and is not a compound of the above (a), (b) and (c).

As the compound (d), any compound known as an organic acid or an inorganic acid can be used as long as it is .

In the present invention, the acid group may be any group which exhibits acidity, and examples thereof include carboxylic acid anhydride groups, disulfonic acid anhydride groups and pyrophosphoric acid groups which are known as carboxyl groups, phosphoric acid groups, sulfonic acid groups and acid anhydride groups.

The compound (d) may have at least 1 acid group in its molecule, preferably 1 to 6 acid groups in its molecule, and more preferably 1 to 4 acid groups.

Examples of the compound (d) include carboxylic acid-containing compounds such as acetic acid, citric acid, formic acid, lactic acid, glutaric acid, phthalic acid, succinic acid and ricinoleic acid, carboxylic acid anhydride-containing compounds such as acetic anhydride, phthalic anhydride and succinic anhydride, sulfonic acid-containing compounds such as sulfonic acid, methanesulfonic acid and benzenesulfonic acid, and phosphoric acid-containing compounds such as phosphoric acid, monoalkyl phosphate and dialkyl phosphate.

[ other Components ]

The compositions of the present invention may also contain other ingredients as desired.

Examples of the other component include plasticizers, lubricants, curing accelerators, curing agents, thickeners, film-forming aids, mold release agents, fillers, antifoaming agents, heat resistance-imparting agents, flame retardancy-imparting agents, antistatic agents, conductivity-imparting agents, ultraviolet absorbers, antioxidants, polymerization inhibitors, antifogging agents, antibacterial and antifungal agents, photocatalysts, dyes, pigments, coupling agents, thixotropic agents, flexibility-imparting agents, reinforcing materials (fibers, fabrics, nonwoven fabrics, etc.), curable monomers and oligomers other than (meth) acrylic monomers, and solvents.

Composition, production method, use, etc. of composition

The composition of the present invention is a composition containing the above-mentioned polymer (a), monomer (b) and curing catalyst (c).

The composition of the present invention contains 25 to 95 parts by mass of a polymer (a) and 5 to 75 parts by mass of a monomer (b). Wherein the total of the polymer (a) and the monomer (b) is 100 parts by mass.

The amount of the polymer (a) is preferably 25 to 93 parts by mass, more preferably 27 to 93 parts by mass, and particularly preferably 30 to 90 parts by mass, based on 100 parts by mass of the total of the polymer (a) and the monomer (b). The amount of the monomer (b) is preferably 7 to 75 parts by mass, more preferably 7 to 73 parts by mass, and particularly preferably 10 to 70 parts by mass. Within the above range, good curability in the atmosphere can be obtained, and adhesion to a substrate made of a low surface energy material is excellent, and therefore, the range is preferable.

The amount of the curing catalyst (c) contained in the composition of the present invention varies depending on the kind of the curing catalyst (c).

In the composition of the present invention, when the curing catalyst (c) is an organoborane-amine complex (c-1), the organoborane-amine complex (c-1) is contained in an amount of 0.001 to 0.1 mol, preferably 0.002 to 0.1 mol, more preferably 0.003 to 0.08 mol, and most preferably 0.004 to 0.08 mol, per 100g of the total amount of the polymer (a) and the monomer (b). Within the above range, the coating composition exhibits curability in the atmosphere and adhesion to a substrate, and ensures a good pot life of the coating solution, and thus is preferable.

In the composition of the present invention, when the curing catalyst (c) is a mixture (c-2) of a transition metal carboxylate and a polyamine having a tertiary amino group, the total content of the transition metal carboxylate and the polyamine having a tertiary amino group is 0.001 to 0.1 mol, preferably 0.002 to 0.09 mol, more preferably 0.002 to 0.08 mol, particularly preferably 0.004 to 0.08 mol, per 100g of the total of the polymer (a) and the monomer (b). Within the above range, the coating composition exhibits curability in the atmosphere and adhesion to a substrate, and ensures a good pot life of the coating solution, and thus is preferable. The molar ratio of the transition metal carboxylate to the polyamine having a tertiary amino group (transition metal carboxylate: polyamine having a tertiary amino group) is 1:0.05 to 1:5, preferably 1:0.1 to 1:4, and more preferably 1:0.15 to 1: 3.5. Within the above range, the coating composition exhibits curability in the atmosphere and adhesion to a substrate, and ensures a good pot life of the coating solution, and thus is preferable.

The composition of the present invention contains the compound (d) as an essential ingredient in the case where the condition (X) is satisfied as described above. When the condition (X) is satisfied, the composition of the present invention contains the compound (d) in a molar ratio (c-1: d) of the organoborane-amine complex (c-1) to the compound (d) of 1:0.01 to 1:5, preferably 1:0.03 to 1:4.5, and more preferably 1:0.05 to 1:4. Within the above range, the coating composition exhibits curability in the atmosphere and adhesion to a substrate, and ensures a good pot life of the coating solution, and thus is preferable.

The composition of the present invention may contain the compound (d) as an optional component when the condition (X) is not satisfied. When the condition (X) is not satisfied and the curing catalyst (c) is an organoborane-amine complex (c-1), the composition of the present invention contains the compound (d) in a molar ratio (c-1: d) of the organoborane-amine complex (c-1) to the compound (d) of usually 1:0 to 1:5, preferably 1:0 to 1:4.5, and more preferably 1:0 to 1:4. Within the above range, the coating composition exhibits curability in the atmosphere and adhesion to a substrate, and ensures a good pot life of the coating solution, and thus is preferable. When the condition (X) is not satisfied and the curing catalyst (c) is a mixture (c-2) of a transition metal carboxylate and a polyamine having a tertiary amino group, the composition of the present invention contains the compound (d) in a molar ratio of the transition metal carboxylate to the compound (d) (transition metal carboxylate: d) of usually 1:0 to 1:5, preferably 1:0 to 1:4.5, more preferably 1:0 to 1:4. Within the above range, the coating composition exhibits curability in the atmosphere and adhesion to a substrate, and ensures a good pot life of the coating solution, and thus is preferable.

When the composition of the present invention contains the above-mentioned other components, the amount thereof is not particularly limited as long as the effect of the present invention is exerted. The amount of the other component (excluding the solvent) is usually in the range of 0.01 to 50 parts by mass when the total amount of the polymer (a) and the monomer (b) is defined as 100 parts by mass.

When the composition of the present invention contains a solvent, the content is usually in the range of 10 to 1900 parts by mass when the total amount of the polymer (a) and the monomer (b) is defined as 100 parts by mass.

The method for producing the composition of the present invention is not particularly limited. The composition can be generally obtained by mixing the components constituting the composition, i.e., the polymer (a), the monomer (b), the curing catalyst (c), and if necessary, the compound (d), with other components.

In the above composition, when the polymer (a), the monomer (b), and if necessary, the compound (d) and the curing catalyst (c) are brought into contact with each other by mixing or the like, a polymerization reaction starts, that is, a curing reaction starts, and therefore, it is preferable to obtain a curable composition for coating by mixing the respective components immediately before use, or to store a binder prepared into a two-pack type or multi-component type ( may be a solid or a powder in part) so that the polymer (a), the monomer (b), and if necessary, the compound (d) and the curing catalyst (c) do not come into contact with each other, and to mix both or all of the components immediately before use.

The temperature for curing the composition of the present invention is usually-20 to 80 ℃ and preferably 0 to 60 ℃. The composition of the present invention can be cured at normal temperature (for example, 10 to 30 ℃), and therefore, the composition of the present invention can be used as a normal temperature-curable composition for coating. Therefore, a coating film can be easily formed on the substrate, and a heat-labile material can be used as the substrate.

The composition of the present invention can be applied to various substrates, and a coating film can be obtained by curing the composition. That is, the laminate of the present invention has a substrate and a coating film of a curable composition for coating formed adjacent to the substrate.

The composition of the present invention can be cured to obtain a coating film, but the curing time of the composition of the present invention can be shortened as compared with a conventional curable composition for coating. Further, the composition of the present invention is easy to control the safety under the normal temperature and atmospheric pressure atmosphere and the pot life of the liquid after the preparation of the composition, and therefore, the composition is also excellent in handling properties.

The laminate of the present invention has a substrate made of a low surface energy material, and therefore, can be used for various applications because the laminate has excellent adhesion between a coating film and the substrate and excellent surface curability of the coating film.

As the substrate, substrates made of various materials can be used, and examples of the material include polyolefins such as polypropylene and polyethylene, acrylonitrile butadiene styrene copolymer, nylon, polyacetal, Carbon Fiber Reinforced Thermoplastic (CFRTP), and the like.

The composition of the present invention is suitably used for coating a substrate of a low surface energy material, and examples of the low surface energy material include polyolefins such as polypropylene and polyethylene, silicone resins, and polytetrafluoroethylene.

The laminate of the present invention can be used for various applications, for example, as an article or a member constituting various structures such as electric equipment, automobiles, vehicles, ships, and housing equipment, by appropriately selecting the shape of the base material, the conditions of secondary processing, and the like.