JP2007008833A - Coating powder and composition containing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide powder which is coated with polymer particles, has sufficient dispersibility in water, and can form non-sticky coating films having excellent coating film strength, when coated. <P>SOLUTION: This composition is produced by dispersing powder coated with polymer particles having a two-layer structure comprising copolymers having different constituting monomer compositions, each other, in an aqueous solvent, wherein the two-layered copolymer layers constituting the polymer particles comprise (A) a copolymer containing 5 to 95 mass% of a monomer represented by the general formula (I) and 5 to 40 mass% of a polymerizable carboxylic acid and its salt as main constituting monomer and (B) a copolymer containing a monomer represented by the general formula (II)(not shown) as a main constituting monomer. The composition is dispersed in an aqueous solvent and then formulated into a cosmetic. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a coating powder suitable for an aqueous dispersion foundation and the like.

  Cosmetics containing powders, such as makeup cosmetics and UV protective cosmetics, are used to conceal troubles such as stains and freckles, or to hide and protect skin from ultraviolet rays. Powders such as titanium, zinc oxide, iron oxide, talc, mica, and sericite are blended as a concealing agent or an ultraviolet screening agent. Examples of such cosmetic dosage forms include those dispersed in an aqueous solvent or oil gel, those emulsified, those mixed with a powder, those obtained by pressing a mixed powder, and the like. Among these, the emulsified type can be mixed with an aqueous component such as a moisturizing component, and since it is less irritating when applied, it is preferably used by people who feel dry to the skin. The biggest problem with these types is the stability of the system. This is because the specific gravity of water is 1 and the specific gravity of the planetary component is less than 1, whereas the specific gravity of the powders is 4 or more, and in order to stably disperse them, Although it is necessary to give viscosity, thickeners such as carboxymethylcellulose and carboxyvinyl polymer that are usually used in cosmetics are difficult to use because they tend to agglomerate powders. , Fatty acid soap-Higher alcohol surfactant gel structure is used. However, in such a system, the amount of surfactant to be used increases, and there are cases where there is a problem in safety, and there are cases where the usability is hindered due to an increase in hardness in a low temperature range.

For example, in the case of a dispersion type in an aqueous solvent, it is already known that a powder coated with a polymer obtained by polymerizing a monomer containing acrylic acid as one of the constituent monomers is suitable for cosmetics. It is already known that such a powder is very well dispersed in a dispersion medium containing water, and that it is difficult to cause aggregation even when coexisting with a thickener such as carboxyvinyl polymer. Yes. However, such a polymer or copolymer is sticky when applied because of the stickiness of the polymerizable carboxylic acid and its salt that impart water solubility. For this reason, it has the disadvantage that the stickiness is remarkably increased when the coated body is thickly coated, or when a solid content such as powder is present in the aqueous polymer composition dispersion. There has been a demand for the development of a dispersion-type dosage form in a solvent.

  On the other hand, the monomer represented by the general formula (I) and the monomer represented by the general formula (II) are known compounds, and a polymer containing this as a constituent monomer is used for maintaining the shape of the hair. It is known to be used as a treatment agent or a tooth fixative (see, for example, Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4), but different constituent monomer compositions. A polymer particle composition having a multi-layer structure having two layers made of a copolymer having a polymer particle, wherein the two copolymer layers constituting the polymer particle are represented by the following general formula (I): A) 5 to 95% by mass A monomer comprising 5 to 40% by weight of a polymerizable carboxylic acid and a salt thereof as a main constituent monomer, and B) a monomer represented by a monomer represented by the following general formula (II) as a main constituent monomer Is a copolymer which is not known at all things. Therefore, it has not been known at all that such a copolymer composition is a film-forming copolymer composition excellent in feeling of use and cosmetic effect, and the powder coated with these copolymers can be easily used in an aqueous medium. Neither was it known to be dispersed and sticky.

JP 2003-361043 A WO03 / 84491 WO03 / 84490 Special table 2003-512403 gazette

  The present invention has been made under such circumstances, and is coated with polymer particles that have sufficient dispersibility in water, have no stickiness during coating, and can form a film having excellent film strength. It is an object of the present invention to provide a powder. Moreover, this invention makes it a subject to provide the cosmetics which can give the makeup | decoration film | membrane which does not have stickiness at the time of especially application | coating.

As a result of intensive studies to solve the above problems, the present inventor has obtained a powder coated with polymer particles having a two-layer structure composed of copolymers having different constituent monomer compositions in an aqueous solvent, The two copolymer layers constituting the polymer particles are coated with the polymer particles having the above characteristics by copolymerizing a polymerizable carboxylic acid and a salt thereof, a specific hydrophilic monomer and a hydrophobic monomer under a specific composition ratio. Based on this finding, the present invention has been completed. That is, the present invention is as follows.
(1) A powder that is coated with polymer particles having a multilayer structure having two layers of copolymers having different constituent monomer compositions in an aqueous solvent, and is a two-layer copolymer layer constituting the polymer particles A) 5 to 95% by mass of a monomer represented by the following general formula (I) and 5 to 40% by mass of a polymerizable carboxylic acid and a salt thereof as a main constituent monomer, and B) the following general formula (II) Powder coated with polymer particles, characterized in that it is a copolymer having a monomer represented by

一般式（Ｉ）
（但し、式中、Ｒ1は水素原子又は炭素数１〜３のアルキル基を表し、Ｒ2は水酸基を有していてもよい炭素数２〜４のアルキレン基を表し、Ｒ3は水素原子、炭素数６〜１０の芳香族基、炭素数１〜１４の脂肪族炭化水素基又は炭素数１〜１２のアシル基を表す。ｍは４〜４０の数値を表す。）

Formula (I)
(In the formula, R 1 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R 2 represents an alkylene group having 2 to 4 carbon atoms which may have a hydroxyl group, and R 3 represents a hydrogen atom or carbon number. A 6-10 aromatic group, a C1-C14 aliphatic hydrocarbon group, or a C1-C12 acyl group is represented, m represents a numerical value of 4-40.)

一般式（ＩＩ）
（但し、式中、Ｒ4は水素原子又は炭素数１〜３のアルキル基を表し、Ｒ5は炭素数１から１０の直鎖状または分岐状のアルキル基を表す。）
（２）一般式（Ｉ）で表されるモノマーが下記一般式（ＩＩＩ）で表されることを特徴とする（１）記載の粉体。

Formula (II)
(In the formula, R4 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R5 represents a linear or branched alkyl group having 1 to 10 carbon atoms.)
(2) The powder described in (1), wherein the monomer represented by the general formula (I) is represented by the following general formula (III).

一般式（ＩＩＩ）
（式中、Ｒ６は水素原子又は炭素数１〜３のアルキル基を表し、Ｒ７は水素原子、炭素数６〜１０の芳香族基、炭素数１〜１４の脂肪族炭化水素基又は炭素数１〜１２のアシル基を表す。nは４〜４０の数値を表す。）

Formula (III)
(In the formula, R6 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R7 represents a hydrogen atom, an aromatic group having 6 to 10 carbon atoms, an aliphatic hydrocarbon group having 1 to 14 carbon atoms, or 1 carbon atom. Represents an acyl group of ˜12, and n represents a numerical value of 4 to 40.)

(3) The powder according to (1) or (2), wherein the A layer is located inside the B layer.
(4) The powder according to any one of (1) to (3), wherein the surface is preliminarily hydrophobized. (5) The hydrophobizing treatment is a hydrogen methylpolysiloxane baking treatment. The powder according to (4), which is one or more selected from baking treatment with dimethylpolysiloxane, silane coupling agent treatment, metal soap treatment, and acylated amino acid salt treatment.
(6) Cosmetics comprising the powder according to any one of (1) to (5) (7) Cosmetics according to (6), which is an aqueous medium dispersion type (8) The cosmetic according to (6) or (7), further comprising a thickener, wherein the cosmetic (9) thickener is a carboxyvinyl polymer and a salt thereof, (6)- (8) In the method of dispersing the hydrophobized powder in any one of (10) the hydrophobized powder and the hydrophobized powder, the hydrophobized powder is composed of two layers composed of copolymers having different constituent monomer compositions. And the two copolymer layers constituting the polymer particle are A) 5 to 95% by mass of the monomer represented by the following general formula (I) and 5 to 40% by mass of polymerizable carboxylic acid and its salt And B) a copolymer represented by a monomer represented by the following general formula (II), which is coated with copolymer polymer particles having a main constituent monomer, and then dispersed in an aqueous cosmetic. A method for dispersing the hydrophobized powder in an aqueous cosmetic.

  According to the present invention, there is provided a powder formed by coating with aqueous polymer particles having sufficient dispersibility in water, having no stickiness during coating, and capable of forming a film having excellent film strength. Can do. In addition, the present invention can also provide a cosmetic that can provide a cosmetic film that is not particularly sticky during application.

Hereinafter, the present invention will be described in detail.
(1) One or more structural units derived from the monomer represented by the general formula (I), which is an essential structural unit of the copolymer A used in the present invention. The copolymer A constituting the powder formed by coating with polymer particles having a multilayer structure having layers has one or more structural units derived from the monomer represented by the general formula (I) (hereinafter referred to as “structural units”). (I) ”) as an essential constituent unit. Here, examples of the alkyl group represented by R1 include a methyl group, an ethyl group, a propyl group, a 1-methylethyl group, and a cyclopropyl group. In the present invention, R1 is preferably a hydrogen atom or a methyl group. Examples of the alkylene group represented by R2 include ethylene group, propylene group, isopropylene group, 2-hydroxypropylene group, 1-hydroxy-2-methylethylene group, and 2-hydroxy-1-methylethylene group. Of these, ethylene group or propylene group is preferable, and ethylene group is more preferable. In addition, among the groups represented by R3, examples of the aromatic group having 6 to 10 carbon atoms include a phenyl group, a benzyl group, a methylphenyl group, and an ethylphenyl group; Preferred examples of the hydrogen group include a methyl group, an ethyl group, a butyl group, a tertiary butyl group, a hexyl group, a cyclohexyl group, an octyl group, a 2-ethylhexyl group, and a lauryl group; Preferred examples of the 12 acyl group include a formyl group, an acetyl group, a propionyl group, a butyryl group, an isobutyryl group, a valeryl group, and a lauroyl group. Of these, the group represented by R3 is preferably an aliphatic hydrocarbon group having 1 to 14 carbon atoms, and more preferably an alkyl group having 1 to 12 carbon atoms. Here, it is important that m is in the numerical range of 4-40. In the present invention, by using the structural unit (I) in which m is in the above range as a copolymer constituting the aqueous polymer composition dispersion, a copolymer capable of forming a film having excellent strength can be produced. When n is less than 4, the water-solubility of the copolymer is lowered, and the film-forming composition may not be prepared. On the other hand, if n is larger than 40, the strength of the film formed by the aqueous polymer composition dispersion is undesirably lowered. Among the monomers represented by the above general formula (I), specific examples of the monomer in which R2 is a propylene group include polypropylene glycol (6) monoacrylate, polypropylene glycol (9) monoacrylate, and polypropylene glycol (13) monoacrylate. , Polypropylene glycol (9) monomethacrylate, polypropylene glycol (13) monomethacrylate and the like. Many of these polymers are commercially available. As an example, there are trade names “Blemmer” AP-400, AP-550, AP-800, PP-500, PP-800 (all manufactured by NOF Corporation) and the like. Specific examples of the monomer in which R2 is an ethylene group will be described later.

  Among the structural units derived from the hydrophilic monomer represented by the general formula (I), a structural unit derived from the hydrophilic monomer represented by the general formula (III) is particularly preferable. Specific examples of the monomer represented by the general formula (III) include polyethylene glycol (4.5) monoacrylate, polyethylene glycol (4.5) monomethacrylate, polyethylene glycol (10) monoacrylate, polyethylene. Glycol (8) monomethacrylate, polyethylene glycol (23) monoacrylate, polyethylene glycol (23) monomethacrylate, methoxypolyethylene glycol (9) acrylate, methoxypolyethylene glycol (4) methacrylate, methoxypolyethylene glycol (9) methacrylate, methoxypolyethylene glycol (23) Methacrylate, * 1) Oleyloxypolyethylene glycol (18) Methacrylate, Lauroxypolyethylene glycol 4) acrylate, lauroxypolyethylene glycol (18) acrylate, lauroxypolyethylene glycol (4) methacrylate, * 2) lauroyl acetoxyphenyl polyethylene glycol (10) methacrylate, and the like. The numbers in parentheses indicate the value of n. As described in the general formula (I), in the same manner as in the general formula (III), in order to produce an aqueous copolymer capable of forming a film having excellent strength, n is in a numerical range of 4 to 40. It is important to be. These hydrophilic monomers can be obtained in high yield by an esterification reaction of the corresponding polyethylene glycol, polyethylene glycol monoether, polyethylene glycol monoester and acrylic acid or methacrylic acid chloride or anhydride. Moreover, since there are already many commercial products, it is also possible to use such commercial products. For example, the trade names Blemmer AE-200, AE-400, PE-200, PE-350, AME-400, PME-200, PME-400, PME-1000, ALE-200, ALE-800, PLE- 200 etc. (both manufactured by NOF Corporation). The structural unit (I) or (III) contained in the copolymer A used in the present invention may be only one, but if it satisfies the above general formula (I) or (III), two or more structural units (I ) Or (III) may be combined. In the present invention, the total amount of one or more of the structural units (I) or (III) is 10 to 55% by weight, preferably 15 to 55% by weight, more preferably, based on all the structural units constituting the copolymer A. Contains 20-55%. The structural unit derived from the monomer represented by the general formula (I) or (III) affects the strength and stickiness of the film formed by the aqueous polymer composition dispersion, and is a structural unit for all the structural units of the copolymer A ( By setting the content of I) or (III) within the above range, a cosmetic capable of forming a decorative film having excellent feel and strength can be produced. If the content of the structural unit (I) or (III) is too small than the above range, the strength of the decorative film is not sufficient. On the other hand, if the content is too large, stickiness at the time of application may be unfavorable.

(2) One or more structural units derived from a polymerizable carboxylic acid which is an essential structural unit of the copolymer A used in the present invention and a salt thereof. The aqueous copolymer A constituting the present invention contains a polymerizable carboxylic acid and One or more structural units derived from the salt are included as essential structural units. Specific examples of the polymerizable carboxylic acid include acrylic acid, methacrylic acid, maleic acid, crotonic acid, itaconic acid, and fumaric acid, and most of them are commercially available. The structural unit derived from the polymerizable carboxylic acid and its salt contained in the copolymer A used in the present invention may be only one kind, as long as it satisfies the structural unit derived from the polymerizable carboxylic acid and its salt. You may have combining the structural unit induced | guided | derived from 2 or more types of polymeric carboxylic acid and its salt. In the present invention, one or more structural units derived from a polymerizable carboxylic acid and a salt thereof in a total amount of 5 to 40% by mass, preferably 5 to 35%, based on all the structural units constituting the aqueous copolymer. More preferably, it has 10-30 mass%. The structural unit derived from the polymerizable carboxylic acid and its salt is responsible for the affinity between the cosmetic film formed by the cosmetic and the skin, and is also responsible for stickiness during application. By setting the content of the structural unit relative to all the structural units of the copolymer A within the above range, a cosmetic that can form a cosmetic film that is not sticky at the time of application, has good adhesion to the skin, and is difficult to transfer to clothes or the like. be able to. When the content of the structural unit derived from the polymerizable carboxylic acid and the salt thereof is too small from the above range, there are cases where the hydrophilicity of the resin during polymerization is too low to react. On the other hand, if the amount is more than the above range, the cosmetic film is too hydrophilic and may become sticky when the decorative film is applied.

(3) Other optional structural units that can be included in the copolymer A The copolymer A is a common copolymer other than the structural units derived from the essential structural units (I) and (III) and polymerizable carboxylic acid and salts thereof. Arbitrary structural units derived from monomers capable of constituting a polymer can be contained within a range that does not impair the functions and effects of the cosmetic of the present invention. Such optional structural units include: (meth) acrylic amides such as acrylic amides, methacrylic amides, acrylic monoalkyl amides, methacrylic monoalkyl amides; (meth) acrylic acid-ndecyl, (meth) acrylic acids -N (dec), (meth) acrylic acid alkyl ester having 9 or more carbon atoms such as stearyl (meth) acrylate; 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxy (Meth) acrylic acid hydroxyalkyl esters such as butyl (meth) acrylate; (meth) acrylic acid aryl esters such as benzyl (meth) acrylate; (meth) acrylic acid methoxymethyl, (meth) acrylic acid methoxyethyl ( Alkoxyalkoxy methacrylate Esters; vinyl acetate; vinyl pyrrolidone; styrene; alpha-methyl styrene acrylonitrile and the like. Most of these monomers are commercially available.

(4) Copolymer A used for the powder formed by coating with the polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions in the aqueous solvent of the present invention.
The copolymer used in the present invention contains the above structural units (I) and (III), a structural unit derived from the polymerizable carboxylic acid and a salt thereof, and, if necessary, any other structural unit in its skeleton. It is a copolymer to contain. The copolymer is usually a random copolymer in which structural units are bonded at random, but may be a block copolymer or a graft copolymer. The molecular weight of the aqueous copolymer A used in the present invention is not particularly limited, but the mass average molecular weight in terms of polyethylene glycol measured by high performance liquid chromatography equipped with a gel permeation column is preferably in the range of 5000 to 200000000. More preferably, it is ˜15000000. The method for producing the copolymer A in the present invention is not particularly limited. For example, the copolymer A can be obtained by mixing a monomer for deriving each structural unit in a solvent and performing a polymerization reaction according to a method usually used for polymerization of acrylic monomers. .

(5) One or more structural units derived from the hydrophobic monomer represented by the general formula (II), which is an essential structural unit of the copolymer B used in the present invention, and different structural monomers in the aqueous solvent of the present invention The copolymer B constituting the powder formed by coating with polymer particles having a multilayer structure having two layers composed of a copolymer having a composition is one or more derived from a hydrophobic monomer represented by the following general formula (II) The structural unit (hereinafter also referred to as “structural unit (II)”) is an essential structural unit. Here, examples of the alkyl group represented by R4 include a methyl group, an ethyl group, a propyl group, a 1-methylethyl group, and a cyclopropyl group. In the present invention, R4 is preferably a hydrogen atom or a methyl group. Examples of the alkyl group represented by R5 include a methyl group, an ethyl group, a propyl group, a 1-methylethyl group, a cyclopropyl group, an n-butyl group, an iso-butyl group, a sec-butyl group, and a tert-butyl group. N-hexyl group, cyclohexyl group, n-octyl group and 2-ethylhexyl group. Specific examples of the monomer represented by the general formula (II) include methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, isopropyl methacrylate, n-butyl acrylate, and n-butyl methacrylate. , Iso-butyl acrylate, iso-butyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, tert-butyl acrylate, tert-butyl methacrylate, n-hexyl acrylate, n-hexyl methacrylate, acrylic Examples include cyclohexyl acid, cyclohexyl methacrylate, n-octyl acrylate, n-octyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate and the like, and most of them are commercially available. In this case, the copolymer may have only one type of structural unit (II), but may have two or more types in combination. In the present invention, the proportion of the structural unit (II) is 5 to 95% by mass, preferably 10 to 90% by mass, and more preferably 15 to 85% by mass with respect to all the structural units constituting the copolymer B. % Is important. By containing the structural unit (II) in the above-described ratio, film strength can be imparted to the decorative film formed by the cosmetic, and physical durability can be improved. Further, the copolymer B used in the powder formed by coating with the polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions in the aqueous solvent of the present invention comprises the above essential constituent unit (II In addition to the structural unit derived from (1), any structural unit derived from a monomer that can usually constitute a copolymer can be included within a range that does not impair the functions and effects of the cosmetic of the present invention. Such optional structural units include (meth) acrylic amides such as acrylic amides, methacrylic amides, acrylic monoalkyl amides, methacrylic monoalkyl amides; (meth) acrylic acid-ndecyl (meth) acrylic acid- n (dec), (meth) acrylic acid alkyl ester having an alkyl group having 9 or more carbon atoms such as stearyl (meth) acrylate; 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (Meth) acrylic acid hydroxyalkyl esters such as (meth) acrylate; (meth) acrylic acid aryl esters such as (meth) acrylic acid benzyl; (meth) acrylic acid methoxymethyl, (meth) acrylic acid methoxyethyl (meth) ) Alkoxyalkyl acrylate Ester; vinyl acetate; vinyl pyrrolidone; styrene; alpha-methyl styrene acrylonitrile and the like. Most of these monomers are commercially available.

(6) Copolymer B used in the present invention
The aqueous copolymer used in the present invention is a copolymer containing a structural unit derived from the structural unit (II) and any other structural unit in its skeleton. The copolymer is usually a random copolymer in which structural units are bonded at random, but may be a block copolymer or a graft copolymer. The molecular weight of the copolymer B used in the present invention is not particularly limited, but the polyethylene glycol-converted mass average molecular weight measured by high performance liquid chromatography equipped with a gel permeation column is preferably in the range of 5,000 to 200,000,000. More preferably, it is 15000000. The production method of the copolymer B in the present invention is not particularly limited. For example, the polymerization reaction is performed according to a method usually used in multilayer polymerization in which the copolymer A is mixed in an aqueous solvent and the components of the copolymer B are dropped and polymerized. It can be obtained by a method.

(7) A powder composition formed by coating with polymer particles having a multilayer structure having two layers of copolymers having different constituent monomer compositions in the aqueous solvent of the present invention, and different constituent monomers in the aqueous solvent Powder composition dispersion formed by coating with polymer particles having a multilayer structure having two layers composed of a copolymer having a composition Multilayer having two layers composed of copolymers having different constituent monomer compositions in the aqueous solvent of the present invention The powder formed by coating with polymer particles having a structure contains one or more of the above copolymer A and one or more of the copolymer B. Content of Copolymer A and Copolymer B in Powder Composition Dispersion Coated with Polymer Particles Having Multilayer Structure Having Two Layers of Copolymers Having Different Component Monomer Compositions in Aqueous Solvent of the Present Invention Is 1-50 mass% in total, preferably 2-45 mass%, more preferably 3-40 mass%. When the content of copolymer A and copolymer B in the powder composition formed by coating with a polymer particle having a multilayer structure having two layers of copolymers having different constituent monomer compositions in an aqueous solvent was too small, adjustment was made. The aqueous polymer composition may not be able to form a film, and if it is too much, formulation may be difficult. It is further important that the ratio of copolymer A to copolymer B is in the range of 90:10 to 10:90, preferably 80:20 to 20:80, more preferably 70:30 to 30:70. When the ratio of the copolymer A is too large, the durability of the film to be formed decreases with respect to water and the film may be physically weakened. When the ratio is too small, insolubilization occurs during the reaction and the film cannot be produced. Is not preferable. In addition to the copolymer A and the copolymer B, the aqueous polymer composition of the present invention may further include ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, 1,3 butylene glycol, isoprene glycol, 1,2 pentanediol, glycerin as necessary. , Polyglycerin and other polyhydric alcohols, thickeners, pH adjusters, plasticizers, preservatives, antioxidants, and the like. The aqueous polymer composition of the present invention preferably has a multilayer structure having at least two layers of the layer made of the copolymer A and the layer made of the copolymer B. In this case, it is preferable to take a multilayer structure in which the layer made of the copolymer A is located outside the layer made of the copolymer B. As a preferable form of such an aqueous polymer composition, it is particularly preferable to take a core-shell structure having a core made of copolymer B and a shell made of copolymer A.
In order to produce the aqueous polymer composition of the present invention having such a core-shell structure, the monomer constituting the copolymer A is made into an emulsion in an aqueous solvent, and emulsion polymerization is carried out to induce the layer of the copolymer B. Later, the monomer constituting the copolymer B is added, and the emulsion polymerization is further advanced to construct a layer of the copolymer B on the outside of the copolymer A. When such an operation is repeated on several layers, an aqueous polymer composition having two or more layers can be produced. Such an aqueous polymer composition can be obtained in such a form that it is dispersed in an aqueous solvent after such operations. In such a dispersion form, the aqueous polymer composition is dispersed in an aqueous carrier that can be directly blended into cosmetics or the like by removing unnecessary components in a form such as vacuum concentration or steam distillation. An aqueous polymer composition dispersion of the present invention in the form is obtained. In such an aqueous polymer composition dispersion, the copolymer B having a hydrophobic group is arranged in the outermost layer and the hydrophilic copolymer A is arranged on the inner side. Therefore, in the form of the aqueous polymer composition dispersion, the aqueous polymer composition dispersion is stably aqueous. After being dispersed in the carrier and forming a coating, a coating that is hydrophobic, has a low glass transition point, and excellent frictional properties is formed.

(8) Powder which is an essential component of the present invention The powder which is an essential component of the present invention is coated with polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions. Features.
Such a powder coating method is described in JP-A No. 11-35639 and can be coated according to this publication. In the coated powder of the present invention, the ratio of the copolymer having a constituent monomer composition different from that of the powder is more preferably 95.5: 05 to 99: 1 to 70:30. This is because if the amount of the polymer is too small, the coating effect may not be obtained, and if the amount of the polymer is too large, the characteristics of the powder may not be obtained. The powder of the present invention is a dispersion apparatus using media such as a sand grind mill and a dyno mill, in which polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions from these powders and an aqueous medium. It can manufacture by processing using. When manufacturing using such an apparatus, it is particularly preferable in terms of dispersibility and durability to use zirconia beads as the media. In addition, as the basic powder used in such treatment, any powder used in cosmetics can be used without particular limitation. For example,
Talc, sericite, mica, kaolin, titanium oxide, zinc oxide, iron oxide, zirconium oxide, silica, calcium silicate, magnesium silicate, methylsiloxane network polymer, crosslinked methylpolysiloxane, titanium mica, titanium sericite, carbon black , Bitumen and ultramarine. These powders can be coated with the polymer as it is, or can be coated after the surface is treated in advance. As a method of surface treatment, any treatment method that is usually used can be used without any particular limitation. For example, silicone treatment by baking such as hydrogenmethylpolysiloxane or dimethylpolysiloxane, or a silane coupling agent. Silane coupling treatment, perfluoroalkyl phosphate, pearl fluoroalkyl silane, pearl fluoralkyl treatment, metal soap treatment with metal soap such as zinc stearate, acyl glutamate, acyl amino acid treatment, silica gel coating treatment, etc. Preferred examples can be given. Among these, it is preferable that silicon treatment is performed by baking such as hydrogenmethylpolysiloxane or dimethylpolysiloxane. As the surface-treated powder, a preferable surface treatment amount is 1 to 10% by mass with respect to the total amount of the powder. In addition, these powders may be coated solely with polymer particles, or two or more kinds may be coated.

(9) Cosmetics of the present invention As a form containing the powder of the cosmetics of the present invention coated with polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions of the present invention. Is preferably contained in the form of a powder composition dispersion formed by coating with a polymer particle having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions. Polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions and powders coated with polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions The cosmetics, which are contained in the form of a powder composition dispersion coated with, have sufficient dispersibility in water, are not sticky during application, and can form a film having excellent film strength. it can. In the cosmetic of the present invention, the preferred content of the powder composition coated with polymer particles having a multilayer structure having two layers of copolymers having different constituent monomer compositions is 0 with respect to the total amount of the cosmetic. It is 1-50 mass%, More preferably, it is 1-35 mass%. If the content of the powder composition dispersion formed by coating with polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions is too small, the resulting decorative film cannot provide sufficient film strength. In some cases, too much preparation may be difficult. Since the powder coated with the polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions of the present invention does not aggregate even in the presence of an acrylic thickener, this is the case. It is preferable to apply to a dosage form that takes advantage of the characteristics of a thickening agent, for example, a viscosity-solubilizing system in which powder is dispersed, or a system containing an aqueous medium of an emulsion system containing a small amount of oil. . In the cosmetic of the present invention, the powder coated with polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions can contain only one kind or two or more kinds. Can be contained in combination.

  The cosmetics of the present invention can be added to cosmetics in addition to powder composition dispersions coated with polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions. It is possible to mix these components. Examples of these optional components include hydrocarbons such as squalane, liquid paraffin, light liquid isoparaffin, heavy liquid isoparaffin, microcrystalline wax, and solid paraffin; dimethicone, femethicone, cyclomethicone, amodimethicone, polyether-modified silicone Silicones such as jojoba oil, carnauba wax, owl, beeswax, gallow, octyldodecyl oleate, isopropyl myristate, neopentyl glycol diisostearate, diisostearate malate; stearic acid, laurin Fatty acids such as acid, myristic acid, palmitic acid, isostearic acid, isopalmitic acid, behenic acid, oleic acid; behenyl alcohol, cetanol, oleyl alcohol, octadec Higher alcohols such as alcohol; castor oil, coconut oil, hydrogenated coconut oil, coconut oil, wheat germ oil, isostearic acid triglyceride, isooctanoic acid triglyceride, olive oil and other triglycerides; 1,3-butanediol, glycerin, diglycerin Polyhydric alcohols such as dipropylene glycol, polyethylene glycol, 1,2-pentanediol, 1,2-hexylene glycol, isoprene glycol; sorbitan sesquioleate, sorbitan monooleate, sorbitan trioleate, sorbitan sesquistearate, sorbitan mono Stearate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan monostearate, polyoxyethylene stearate, polyoxyethylene oleate, poly Nonionic surfactants such as oxyethylene glyceryl fatty acid ester, polyoxyethylene alkyl ether, polyoxyethylene hydrogenated castor oil; anionic surfactants such as sodium lauryl stearate, polyoxyethylene alkyl sulfate, sulfosuccinate ester salt; Cationic surfactants such as quaternary alkyl ammonium salts; amphoteric surfactants such as alkyl betaines; organic powders such as crystalline cellulose, cross-linked methylpolysiloxane, polyethylene powder, acrylic resin powder; talc, mica, Powders which may be surface-treated such as sericite, magnesium carbonate, calcium carbonate, titanium dioxide, iron oxide, bitumen, ultramarine, titanium mica, titanium sericite, silica, etc .; acrylic acid / alkyl methacrylate copolymer and / or Or its salt, carbo Thickeners such as xylvinyl polymer and / or salts thereof, xanthan gum and hydroxypropyl cellulose; vitamins such as retinol, retinoic acid, tocopherol, riboflavin, pyridoxine, ascorbic acid, ascorbic acid phosphate ester, glycyrrhizinate, glycyrrhetin Active ingredients such as terpenes such as ursolic acid and oleanolic acid, steroids such as estradiol, ethinylestradiol and estriol; preservatives such as phenoxyethanol, parabens, hibitengluconate and benzalkonium chloride; dimethylaminobenzoic acid ester Preferred examples include UV absorbers such as cinnamates, cinnamic acid esters and benzophenones, and water. These are appropriately selected according to the application.

  EXAMPLES The present invention will be specifically described below with reference to examples, but it goes without saying that the present invention is not limited to these examples.

<Production Example 1 of hydrophilic monomer represented by general formula (I) for deriving structural unit (I)>
103 g of polyethylene glycol # 1000 as a polyethylene glycol compound and 50 g of triethylamine were dissolved in 500 ml of tetrahydrofuran. While the resulting solution was ice-cooled and stirred, a solution prepared by dissolving 5.2 g of methacrylic acid chloride as an acid chloride in 100 ml of tetrahydrofuran was added dropwise to this solution over 2 hours. After completion of dropping, the produced white precipitate was filtered, and tetrahydrofuran and triethylamine were removed from the filtrate using a rotary evaporator to obtain a product. NMR measurement confirmed that the obtained compound was polyethylene glycol (23) monomethacrylate, which is a hydrophilic monomer represented by the above general formula (II).

<Production Examples 2 and 3 of hydrophilic monomer represented by general formula (I) for deriving structural unit (I)>
In the manufacturing example 1 of a hydrophilic monomer, it represents with the said general formula (II) by the method similar to the said manufacturing example 1 except having changed the kind and quantity of a polyethyleneglycol compound and an acid chloride as shown in Table 1. A hydrophilic monomer was obtained.

  400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From a dropping funnel, 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 20.0 g of methoxypolyethylene glycol (9) methacrylate (manufactured by NOF Corporation, trade name “Blemmer PME-400”), Methacrylic acid (manufactured by Tokyo Chemical Industry Co., Ltd.) 10.0 g, 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) 10 g, α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque Co., Ltd.) 2 g Was dropped into a reactor heated to 80 ° C. with stirring. After completion of the monomer dropping, the mixture was stirred for 2 hours at 80 ° C., and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution is returned to room temperature, neutralized by adding 28% aqueous ammonia (manufactured by Nacalai Tesque), added with water, concentrated under reduced pressure, and hydrophilic resin dispersion composition 1 having a solid content of 20% by mass. Got. 240 g of this hydrophilic resin dispersion composition 1 and 60 g of water were weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introduction tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From a dropping funnel, 100 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 20 g of 2-ethylhexyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were dropped into a reactor heated to 80 ° C. with stirring, and simultaneously 15 g of water. A solution prepared by dissolving 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) was added dropwise and reacted for 4 hours. Furthermore, it heated at 90 degreeC, the reaction liquid was returned to room temperature after completion | finish of reaction, and the aqueous polymer composition dispersion 1 of this invention was obtained.

  A liquid having the formulation shown below was charged into a sand grind mill together with 30 parts by mass of zirconia beads and dispersed with the sand grind mill to obtain a coating powder dispersion 1 of the present invention. The dispersibility of the powder in this liquid was extremely good. In general, it can be seen that even a hydrophobized powder subjected to silicone treatment, which has extremely poor dispersibility in an aqueous system, can be dispersed well according to the technique of the present invention.

Aqueous polymer composition dispersion 1 10 parts by weight Silicone-baked titanium dioxide 30 parts by weight Silicone-baked yellow iron oxide 5 parts by weight Silicone-baked bengara 2 parts by weight Silicone-baked talc 13 parts by weight Water 40 parts by weight

(Coating strength test)
The coating powder dispersion 1 was applied onto a slide glass using a brush and dried at 60 ° C. for 8 hours to obtain a test coating film. A coarse linen was placed on the obtained test coating film, and weights of various weights were placed on the linen in order from light to light. Under such load conditions, the linen was moved on the coating film, and the load at which the coating film was damaged was determined to be the coating strength. The results are shown in Table 2.

(Coating flexibility test)
Using a brush, the above coating powder dispersion 1 was applied twice on a styrene film having a thickness of 0.2 mm and dried at 40 ° C. for 12 hours to obtain a test coating film. The operation of bending or stretching the test coating film was repeated, and the number of bendings until a crack occurred on the coating surface on the styrene film was determined. The results are shown in Table 2. The greater the number of times until the coating film cracks, the higher the flexibility of the coating film.

(Evaluation of the stickiness of the coating>
The coating powder dispersion 1 was applied to the inner upper arm with 0.1 g of 10 centimeters with a finger, and the stickiness at the time of application was subjected to sensory evaluation using an evaluation panel. The stickiness was evaluated by five skilled evaluators according to the following five-level evaluation criteria. The evaluation score was an average value of 5 people. That is, the higher this score value, the less sticky it is during application. The results are shown in Table 2.

Evaluation criteria 1 Very sticky.
2 Clearly sticky.
3 Slightly sticky.
4 Almost non-sticky.
5 Not sticky at all.

(Evaluation of film adhesion)
The coating powder dispersion 1 was applied onto a slide glass using a brush and dried at 40 ° C. and 30% relative humidity for 1 hour to prepare a test film. The adhesion of the test film was evaluated using a handy compression tester KES-G5 (manufactured by Kato Tech Co., Ltd.). The adhesiveness was expressed as an adhesive force (g) when the head of the apparatus was peeled off from the coating film. That is, the higher this value, the higher the adhesiveness of the coating film. The results are shown in Table 2.

  400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From the dropping funnel, 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 20.0 g of methoxypolyethylene glycol (4) methacrylate (manufactured by NOF Corporation, trade name “Blemmer PME-200”), Acrylic acid (manufactured by Tokyo Chemical Industry Co., Ltd.) 10.0 g, 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) 10 g, α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque Co., Ltd.) 2 g Was dropped into a reactor heated to 80 ° C. with stirring. After completion of the monomer dropping, the mixture was stirred for 2 hours at 80 ° C., and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution is returned to room temperature, neutralized by adding 28% aqueous ammonia (manufactured by Nacalai Tesque), added with water, concentrated under reduced pressure, and hydrophilic resin dispersion composition 2 having a solid content of 20% by mass. Got. 240 g of this hydrophilic resin dispersion composition 2 and 60 g of water were weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introduction tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From a dropping funnel, 70 g of methyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 50 g of 2-ethylhexyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were dropped into a reactor heated to 80 ° C. with stirring, and simultaneously 15 g of water. A solution prepared by dissolving 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) was added dropwise and reacted for 4 hours. Furthermore, it heated at 90 degreeC, the reaction liquid was returned to room temperature after completion | finish of reaction, and the aqueous polymer composition dispersion 2 of this invention was obtained. About the obtained aqueous polymer composition dispersion 2, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was changed to the aqueous polymer composition dispersion 2 and treated in the same manner, and the coating powder Dispersion 2 was obtained. In the same manner as in Example 1, a coating strength test, a flexibility test, a sticky sensory evaluation test, and an adhesion test were performed. The results are shown in Table 2.

  400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From the dropping funnel, 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), polyethylene glycol (4.5) monoacrylate (manufactured by NOF Corporation, trade name “Blemmer AE-200”) 0 g, maleic acid (manufactured by Tokyo Chemical Industry Co., Ltd.) 10.0 g, 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) 10 g, α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque Co., Ltd.) ) 2 g was dropped into the reactor heated to 80 ° C. with stirring. After completion of the monomer dropping, the mixture was stirred for 2 hours at 80 ° C., and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution is returned to room temperature, neutralized by adding 28% aqueous ammonia (manufactured by Nacalai Tesque), added with water, concentrated under reduced pressure, and hydrophilic resin dispersion composition 3 having a solid content of 20% by mass. Got. 240 g of this hydrophilic resin dispersion composition 3 and 60 g of water were weighed in a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From the dropping funnel, 70 g of ethyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 50 g of normal butyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were dropped into a reactor heated to 80 ° C. with stirring, and simultaneously into 15 g of water. A solution prepared by dissolving 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) was dropped and reacted for 4 hours. Furthermore, it heated at 90 degreeC, the reaction liquid was returned to room temperature after completion | finish of reaction, and the aqueous polymer composition dispersion 3 of this invention was obtained. For the obtained aqueous polymer composition dispersion 3, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was changed to the aqueous polymer composition dispersion 3 and treated in the same manner, and the coating powder Dispersion 3 was obtained. In the same manner as in Example 1, a coating strength test, a flexibility test, a sticky sensory evaluation test, and an adhesion test were performed. The results are shown in Table 2.

  400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From the dropping funnel 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), polyethylene glycol (10) monoacrylate (manufactured by NOF Corporation, 20.0 g of trade name “Blemmer AE-400”, croton 10.0 g of acid (manufactured by Tokyo Chemical Industry Co., Ltd.), 10 g of 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque Co., Ltd.) The mixture was added dropwise to a reactor heated to 80 ° C. with stirring and stirred at 80 ° C. for 2 hours after the completion of monomer addition, and 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) was added. A solution dissolved in 10 g of isopropyl alcohol was added dropwise, and stirring was continued for 3 hours at 80 ° C., followed by α, α′-azobisisobutyronitrile (Nacala). A solution prepared by dissolving 0.2 g of Tesque Co., Ltd. with 10 g of isopropyl alcohol was added dropwise, and stirring was further continued for 5 hours at 80 ° C. After completion of the reaction, the reaction solution was returned to room temperature and 28% aqueous ammonia (Nacalai) Tesque Co., Ltd.) was added to neutralize, water was added, and the mixture was concentrated under reduced pressure to obtain a hydrophilic resin dispersion composition 4 having a solid content of 20% by mass, reflux condenser, dropping funnel, thermometer, nitrogen inlet tube In a reactor equipped with a stirrer, 240 g of this hydrophilic resin dispersion composition 4 and 60 g of water were weighed, and nitrogen gas was blown to remove dissolved oxygen.From the dropping funnel, ethyl acrylate (Tokyo Chemical Industry Co., Ltd.). 70 g and 50 g of isopropyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were dropped into a reactor heated to 80 ° C. with stirring. At the same time, ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) 0 A solution in which 5 g was dissolved was dropped and reacted for 4 hours, followed by heating at 90 ° C. After completion of the reaction, the reaction solution was returned to room temperature to obtain an aqueous polymer composition dispersion 4 of the present invention. For the aqueous polymer composition dispersion 4, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was replaced with the aqueous polymer composition dispersion 4 and treated in the same manner. The coating strength test, the softness test, the stickiness sensory evaluation test, and the tack test were conducted in the same manner as in Example 1. Table 2 shows the results.

  400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From a dropping funnel, 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 20.0 g of methoxypolyethylene glycol (23) methacrylate (manufactured by NOF Corporation, trade name “Blemmer PME-1000”), Itaconic acid (manufactured by Tokyo Chemical Industry Co., Ltd.) 10.0 g, 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) 10 g, α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque Co., Ltd.) 2 g Was dropped into a reactor heated to 80 ° C. with stirring. After completion of the monomer dropping, the mixture was stirred for 2 hours at 80 ° C., and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution is returned to room temperature, neutralized by adding 28% aqueous ammonia (manufactured by Nacalai Tesque), added with water, concentrated under reduced pressure, and hydrophilic resin dispersion composition 5 having a solid content of 20% by mass. Got. 240 g of this hydrophilic resin dispersion composition 5 and 60 g of water were weighed in a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introduction tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From a dropping funnel, 70 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 50 g of isopropyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were dropped into a reactor heated to 80 ° C. with stirring, and simultaneously added to 15 g of water. A solution in which 0.5 g of ammonium sulfate (manufactured by Wako Pure Chemical Industries, Ltd.) was dissolved was dropped and reacted for 4 hours. Furthermore, it heated at 90 degreeC, and after completion | finish of reaction, the reaction liquid was returned to room temperature and the aqueous polymer composition dispersion 5 of this invention was obtained. About the obtained aqueous polymer composition dispersion 5, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was changed to the aqueous polymer composition dispersion 5 and treated in the same manner, and the coating powder Dispersion 5 was obtained. In the same manner as in Example 1, a coating strength test, a flexibility test, a sticky sensory evaluation test, and an adhesion test were performed. The results are shown in Table 2.

  400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From the dropping funnel 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), propylene glycol (6) monoacrylate (manufactured by Nippon Oil & Fats Co., Ltd., 20.0 g of trade name “Blenmer AP-400”, Fumaru 10.0 g of acid (manufactured by Tokyo Chemical Industry Co., Ltd.), 10 g of 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque Co., Ltd.) The mixture was added dropwise to a reactor heated to 80 ° C. with stirring and stirred at 80 ° C. for 2 hours after the completion of monomer addition, and 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) was added. A solution dissolved in 10 g of isopropyl alcohol was added dropwise, and after stirring for 3 hours at 80 ° C., α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) ) A solution prepared by dissolving 0.2 g in 10 g of isopropyl alcohol was added dropwise, and stirring was further continued for 5 hours at 80 ° C. After completion of the reaction, the reaction solution was returned to room temperature and 28% aqueous ammonia (manufactured by Nacalai Tesque) ) To neutralize, add water, and concentrate under reduced pressure to obtain a hydrophilic resin dispersion composition 6 having a solid content of 20% by mass, equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen inlet tube, and a stirring device. Into the reactor, 240 g of this hydrophilic resin dispersion composition 6 and 60 g of water were weighed and nitrogen gas was blown to remove dissolved oxygen.Methyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) 70 g, 2 -50 g of ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) was dropped into a reactor heated to 80 ° C. with stirring, and at the same time, 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) was dissolved in 15 g of water. Or The mixture was added dropwise and allowed to react for 4 hours, and further heated at 90 ° C. After completion of the reaction, the reaction solution was returned to room temperature to obtain an aqueous polymer composition dispersion 6 of the present invention. For the composition dispersion 6, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was changed to the aqueous polymer composition dispersion 6 and treated in the same manner to obtain a coating powder dispersion 6. A coating strength test, a softness test, a sticky sensory evaluation test, and an adhesion test were conducted in the same manner as in Example 1. The results are shown in Table 2.

    400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From the dropping funnel, 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 20.0 g of polypropylene glycol (13) monomethacrylate (manufactured by NOF Corporation, trade name “Blenmer PP-800”), Acrylic acid (manufactured by Tokyo Chemical Industry Co., Ltd.) 10.0 g, 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) 10 g, α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque Co., Ltd.) 2 g Was dropped into a reactor heated to 80 ° C. with stirring. After completion of the monomer dropping, the mixture was stirred for 2 hours at 80 ° C., and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution is returned to room temperature, neutralized by adding 28% aqueous ammonia (manufactured by Nacalai Tesque), added with water, concentrated under reduced pressure, and hydrophilic resin dispersion composition 7 having a solid content of 20% by mass. Got. 240 g of this hydrophilic resin dispersion composition 7 and 60 g of water were weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introduction tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From the dropping funnel, 70 g of ethyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 50 g of 2-ethylhexyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were dropped into a reactor heated to 80 ° C. with stirring, and simultaneously 15 g of water. A solution prepared by dissolving 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) was added dropwise and reacted for 4 hours. Furthermore, it heated at 90 degreeC, and after completion | finish of reaction, the reaction liquid was returned to room temperature and the aqueous polymer composition dispersion 7 of this invention was obtained. About the obtained aqueous polymer composition dispersion 7, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was changed to the aqueous polymer composition dispersion 7 and treated in the same manner, and the coating powder Dispersion 7 was obtained. In the same manner as in Example 1, a coating strength test, a flexibility test, a sticky sensory evaluation test, and an adhesion test were performed. The results are shown in Table 2.

  400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From the dropping funnel 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 20.0 g of lauroxy polyethylene glycol (18) acrylate (manufactured by NOF Corporation, trade name “Blemmer ALE-800”) , 10.0 g of methacrylic acid (manufactured by Tokyo Chemical Industry Co., Ltd.), 10 g of 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque Co., Ltd.) 2 g was added dropwise to the reactor heated to 80 ° C. with stirring. After completion of the monomer dropping, the mixture was stirred for 2 hours at 80 ° C., and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution is returned to room temperature, neutralized by adding 28% aqueous ammonia (manufactured by Nacalai Tesque), added with water, concentrated under reduced pressure, and a hydrophilic resin dispersion composition 8 having a solid content of 20% by mass. Got. 240 g of this hydrophilic resin dispersion composition 8 and 60 g of water were weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introduction tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From the dropping funnel, 70 g of ethyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 50 g of normal butyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were dropped into a reactor heated to 80 ° C. with stirring, and simultaneously into 15 g of water. A solution prepared by dissolving 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) was dropped and reacted for 4 hours. Furthermore, it heated at 90 degreeC, the reaction liquid was returned to room temperature after completion | finish of reaction, and the aqueous polymer composition dispersion 8 of this invention was obtained. About the obtained aqueous polymer composition dispersion 8, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was changed to the aqueous polymer composition dispersion 8 and treated in the same manner to obtain a coating powder. Dispersion 8 was obtained. In the same manner as in Example 1, a coating strength test, a flexibility test, a sticky sensory evaluation test, and an adhesion test were performed. The results are shown in Table 2.

  400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From the dropping funnel, 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 20.0 g of polyethylene glycol (23) monomethacrylate (the compound obtained in Production Example 1), maleic acid (Tokyo Chemical Industry Co., Ltd.) 10.0 g, 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque), 80 ° C. with stirring. It was dripped at the reactor heated up to. After completion of the monomer dropping, the mixture was stirred for 2 hours at 80 ° C., and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution is returned to room temperature, neutralized by adding 28% aqueous ammonia (manufactured by Nacalai Tesque), added with water, concentrated under reduced pressure, and hydrophilic resin dispersion composition 9 having a solid content of 20% by mass. Got. 240 g of this hydrophilic resin dispersion composition 9 and 60 g of water were weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introduction tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From a dropping funnel, 100 g of ethyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 20 g of normal butyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were dropped into a reactor heated to 80 ° C. with stirring, and simultaneously into 15 g of water. A solution prepared by dissolving 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) was dropped and reacted for 4 hours. Furthermore, it heated at 90 degreeC, the reaction liquid was returned to room temperature after completion | finish of reaction, and the aqueous polymer composition dispersion 9 of this invention was obtained. About the obtained aqueous polymer composition dispersion 9, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was changed to the aqueous polymer composition dispersion 9 and treated in the same manner to obtain a coating powder. Dispersion 9 was obtained. In the same manner as in Example 1, a coating strength test, a flexibility test, a sticky sensory evaluation test, and an adhesion test were performed. The results are shown in Table 2.

  400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From the dropping funnel, 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 20.0 g of oleyloxypolyethylene glycol (18) methacrylate (compound of Production Example 2), crotonic acid (Tokyo Chemical Industry Co., Ltd.) 10.0 g, 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) 10 g, and α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque Co., Ltd.) 2 g are heated to 80 ° C. with stirring. Was dropped into the reactor. After completion of the monomer dropping, the mixture was stirred for 2 hours at 80 ° C., and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution is returned to room temperature, neutralized by adding 28% aqueous ammonia (manufactured by Nacalai Tesque), added with water, concentrated under reduced pressure, and hydrophilic resin dispersion composition 10 having a solid content of 20% by mass. Got. 240 g of this hydrophilic resin dispersion composition 10 and 60 g of water were weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introduction tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From a dropping funnel, 100 g of ethyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 20 g of normal butyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were dropped into a reactor heated to 80 ° C. with stirring, and simultaneously into 15 g of water. A solution prepared by dissolving 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) was dropped and reacted for 4 hours. Furthermore, it heated at 90 degreeC, the reaction liquid was returned to room temperature after completion | finish of reaction, and the aqueous polymer composition dispersion 10 of this invention was obtained. About the obtained aqueous polymer composition dispersion 10, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was changed to the aqueous polymer composition dispersion 10 and treated in the same manner to obtain a coating powder. Dispersion 10 was obtained. In the same manner as in Example 1, a coating strength test, a flexibility test, a sticky sensory evaluation test, and an adhesion test were performed. The results are shown in Table 2.

  400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From a dropping funnel, 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 20.0 g of lauryloxypolyethylene glycol (10) acrylate (the compound obtained in Production Example 3), itaconic acid (Tokyo) Under stirring, 10.0 g of Kasei Kogyo Co., Ltd., 10 g of 2-ethylhexyl acrylate (Tokyo Kasei Kogyo Co., Ltd.), and 2 g of α, α′-azobisisobutyronitrile (Nacalai Tesque Co., Ltd.) It was dripped at the reactor heated up to 80 degreeC. After completion of the monomer dropping, the mixture was stirred for 2 hours at 80 ° C., and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution is returned to room temperature, neutralized by adding 28% aqueous ammonia (manufactured by Nacalai Tesque), added with water, concentrated under reduced pressure, and hydrophilic resin dispersion composition 11 having a solid content of 20% by mass. Got. 240 g of this hydrophilic resin dispersion composition 11 and 60 g of water were weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introduction tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From the dropping funnel, 100 g of methyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 20 g of 2-ethylhexyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were added dropwise to the reactor heated to 80 ° C. with stirring. A solution prepared by dissolving 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) in 15 g of water was dropped and reacted for 4 hours. Furthermore, it heated at 90 degreeC, and after completion | finish of reaction, the reaction liquid was returned to room temperature and the aqueous polymer composition dispersion 11 of this invention was obtained. With respect to the obtained aqueous polymer composition dispersion 11, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was changed to the aqueous polymer composition dispersion 11 and treated in the same manner to obtain a coating powder. Dispersion 11 was obtained. In the same manner as in Example 1, a coating strength test, a flexibility test, a sticky sensory evaluation test, and an adhesion test were performed. The results are shown in Table 2.

<Comparative Example 1>
400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From a dropping funnel, 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 20.0 g of lauryloxypolyethylene glycol (10) acrylate (the compound obtained in Production Example 3), itaconic acid (Tokyo) Under stirring, 10.0 g of Kasei Kogyo Co., Ltd., 10 g of 2-ethylhexyl acrylate (Tokyo Kasei Kogyo Co., Ltd.), and 2 g of α, α′-azobisisobutyronitrile (Nacalai Tesque Co., Ltd.) It was dripped at the reactor heated up to 80 degreeC. After completion of the monomer addition, the mixture was stirred at 80 ° C. for 2 hours, and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution is returned to room temperature, neutralized by adding 28% aqueous ammonia (manufactured by Nacalai Tesque), added with water, concentrated under reduced pressure, and hydrophilic resin dispersion composition 11 having a solid content of 20% by mass. Got. 240 g of this hydrophilic resin dispersion composition 11 and 60 g of water were weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introduction tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From the dropping funnel, 100 g of methyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 20 g of 2-ethylhexyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were added dropwise to the reactor heated to 80 ° C. with stirring. A solution prepared by dissolving 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) in 15 g of water was dropped and reacted for 4 hours. Furthermore, it heated at 90 degreeC, and after completion | finish of reaction, the reaction liquid was returned to room temperature and the aqueous polymer composition dispersion 12 corresponded to the comparative example was obtained. With respect to the obtained aqueous polymer composition dispersion 12, the aqueous polymer composition dispersion 1 of the coating powder dispersion 1 of Example 1 was changed to the aqueous polymer composition dispersion 12 and treated in the same manner. Dispersion 11 was obtained. In the same manner as in Example 1, a coating strength test, a flexibility test, a sticky sensory evaluation test, and an adhesion test were performed. The results are shown in Table 2.

<Comparative example 2>
400 g of isopropyl alcohol was weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introducing tube and a stirring device, and nitrogen gas was blown to remove dissolved oxygen. From a dropping funnel, 30 g of isopropyl alcohol, 60.0 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.), 30.0 g of methoxypolyethylene glycol (9) methacrylate (manufactured by NOF Corporation, trade name “Blemmer PME-400”), 10 g of 2-ethylhexyl acrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque Co., Ltd.) were added dropwise to the reactor heated to 80 ° C. with stirring. . After completion of the monomer addition, the mixture was stirred at 80 ° C. for 2 hours, and a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) in 10 g of isopropyl alcohol was added dropwise. After stirring at 80 ° C. for 3 hours, a solution prepared by dissolving 0.2 g of α, α′-azobisisobutyronitrile (manufactured by Nacalai Tesque) with 10 g of isopropyl alcohol was added dropwise, and the mixture was further added for 80 hours. Stirring was continued at 0 ° C. After completion of the reaction, the reaction solution was returned to room temperature, water was added, and the mixture was concentrated under reduced pressure to obtain a hydrophilic resin dispersion composition 13 having a solid content of 20% by mass. 240 g of this hydrophilic resin dispersion composition 13 and 60 g of water were weighed into a reactor equipped with a reflux condenser, a dropping funnel, a thermometer, a nitrogen introduction tube and a stirring device, and nitrogen gas was blown into the reactor to remove dissolved oxygen. From the dropping funnel, 100 g of methyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) and 20 g of 2-ethylhexyl methacrylate (manufactured by Tokyo Chemical Industry Co., Ltd.) were added dropwise to the reactor heated to 80 ° C. with stirring. A solution prepared by dissolving 0.5 g of ammonium persulfate (manufactured by Wako Pure Chemical Industries, Ltd.) in 15 g of water was dropped, but the whole solidified during the reaction, and an aqueous polymer composition dispersion was not obtained.

  A liquid foundation, which is a cosmetic of the present invention, was prepared according to the formulation shown below. That is, the component No. The mixture of 1-13 was stirred well and made uniform, and the liquid foundation 1 was obtained. In addition, although the formulation of cosmetics is shown in the following Table 3, all the numerical values in the table are mass%.

(Affinity evaluation between cosmetics and skin)
The obtained liquid foundation 1 was apply | coated to the wrist inner side. The state of the cosmetic film on the skin was observed with an enlarged video scope while the wrist flexed and stretched vigorously. From this, the number of times the wrist bends and stretched until the decorative film on the skin was cracked or the decorative film began to be unevenly distributed in the wrinkle portion was determined. The larger the number of times, the stronger and more flexible the decorative film is, and it is harder to be destroyed by the movement of the skin. The results are shown in Table 5.

  Except for changing the formulation as shown in Table 3, Liquid Foundation 2 which is the cosmetic of the present invention was produced using the same method as in Example 12 above. The affinity evaluation between the obtained liquid foundation 2 and the skin was carried out in the same manner as in Example 12. The results are shown in Table 5.

  Except for changing the formulation as shown in Table 3, Liquid Foundation 3 which is a cosmetic of the present invention was prepared using the same method as in Example 12 above. The affinity evaluation between the obtained liquid foundation 3 and the skin was carried out in the same manner as in Example 12. The results are shown in Table 5.

  Except for changing the formulation as shown in Table 3, a liquid foundation 4 which is a cosmetic of the present invention was produced using the same method as in Example 12 above. The affinity evaluation between the obtained liquid foundation 4 and the skin was carried out in the same manner as in Example 12. The results are shown in Table 5.

<Comparative Example 3>
A comparative liquid foundation 5 was prepared using the same method as in Example 12 except that the formulation was changed as shown in Table 3. The affinity evaluation between the obtained liquid foundation 5 and the skin was carried out in the same manner as in Example 12. The results are shown in Table 5.

  A gel foundation, which is a cosmetic of the present invention, was prepared according to the formulation shown below. That is, the component Nos. After stirring and mixing the mixture (a) of 1 to 14 to obtain a homogeneous solution, the component No. 15-19 components (b) were added and mixed vigorously with a disper (high speed disperser). Ingredient No. A mixture obtained by mixing 20 and 21 (c) was added to the mixture of (a) and (b) while stirring, and then allowed to stand to obtain an aqueous gel type foundation 1. The affinity evaluation between the obtained aqueous gel type foundation 1 and the skin was carried out in the same manner as in Example 12. The results are shown in Table 5.

  Except that the formulation was changed as shown in Table 4, the same method as in Example 16 was used to prepare an aqueous gel type foundation 2 that is a cosmetic of the present invention. The affinity evaluation between the obtained aqueous gel type foundation 2 and the skin was carried out in the same manner as in Example 12. The results are shown in Table 5.

  Except for changing the formulation as shown in Table 4, the same method as in Example 16 was used to prepare an aqueous gel type foundation 3 that is a cosmetic of the present invention. The affinity evaluation between the obtained aqueous gel type foundation 3 and the skin was carried out in the same manner as in Example 12. The results are shown in Table 5.

  Except for changing the formulation as shown in Table 4, the same method as in Example 16 was used to prepare an aqueous gel type foundation 4 that is a cosmetic of the present invention. The affinity evaluation between the obtained aqueous gel type foundation 4 and the skin was carried out in the same manner as in Example 12. The results are shown in Table 5.

<Comparative example 4>
Except for changing the formulation as shown in Table 4, the same method as in Example 16 was used to prepare an aqueous gel type foundation 5 which is a cosmetic of the present invention. The affinity evaluation between the obtained aqueous gel type foundation 5 and the skin was carried out in the same manner as in Example 12. The results are shown in Table 5.

  The present invention can be applied to cosmetics.

Claims (10)

A powder formed by coating with polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions, wherein the two copolymer layers constituting the polymer particles are A) 5 to 95% by mass A monomer represented by the following general formula (I), a copolymer having 5 to 40% by mass of a polymerizable carboxylic acid and a salt thereof as a main constituent monomer, and B) a monomer represented by the following general formula (II) A powder obtained by coating with polymer particles, which is a copolymer having a monomer as a main constituent monomer.

Formula (I)
(In the formula, R 1 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, R 2 represents an alkylene group having 2 to 4 carbon atoms which may have a hydroxyl group, and R 3 represents a hydrogen atom or carbon number. A 6-10 aromatic group, a C1-C14 aliphatic hydrocarbon group, or a C1-C12 acyl group is represented, m represents a numerical value of 4-40.)

Formula (II)
(In the formula, R4 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R5 represents a linear or branched alkyl group having 1 to 10 carbon atoms.) 2. The powder according to claim 1, wherein the monomer represented by the general formula (I) is represented by the following general formula (III).

Formula (III)
(In the formula, R6 represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and R7 represents a hydrogen atom, an aromatic group having 6 to 10 carbon atoms, an aliphatic hydrocarbon group having 1 to 14 carbon atoms, or 1 carbon atom. Represents an acyl group of ˜12, and n represents a numerical value of 4 to 40.) The powder according to claim 1 or 2, wherein the A layer is located inside the B layer. The powder according to any one of claims 1 to 3, wherein a powder whose surface is hydrophobized in advance is used. The hydrophobization treatment is one or more selected from hydrogenmethylpolysiloxane baking treatment, dimethylpolysiloxane baking treatment, silane coupling agent treatment, metal soap treatment, and acylated amino acid salt treatment. The powder described in. Cosmetics containing the powder according to any one of claims 1 to 5. The cosmetic according to claim 6, which is an aqueous medium dispersion type. The cosmetic according to claim 6 or 7, further comprising a thickener. The aqueous cosmetic according to any one of claims 6 to 8, wherein the thickener is a carboxyvinyl polymer and a salt thereof. In the method of dispersing a hydrophobized powder in an aqueous cosmetic, the hydrophobized powder is coated with polymer particles having a multilayer structure having two layers composed of copolymers having different constituent monomer compositions. The two copolymer layers constituting the polymer particles are A) 5 to 95% by mass of a monomer represented by the following general formula (I) and 5 to 40% by mass of a polymerizable carboxylic acid and a salt thereof as main constituent monomers. And B) a copolymer represented by a monomer represented by the following general formula (II), which is coated with copolymer polymer particles having a main constituent monomer, and then dispersed in an aqueous cosmetic. Method of dispersing powder into water-based cosmetics.