JP2005330216A - Aqueous cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prepare an aqueous cosmetic that quickly corrects the kinky hair caused by sleeping, standing hair, swelling hair, or the like, keeps setting properties, has excellent finger-passing properties in application to the hair and in drying with a dryer, and the like, and provides excellent feels such as moderate firmness, stiffness, moist feeling. <P>SOLUTION: This aqueous cosmetic comprises 0.01-10 wt.% of a polyaspartic acid or a polyaspartic acid derivative, 0.05-15 wt.% of a non-cationic resin, 50-98 wt.% of water and, if necessary, 0.05-20 wt.% of a silicone compound and/or 0.1-20 wt.% of a polyhydric alcohol. Preferably, the non-cationic resin comprises an anionic resin and a semipolar resin. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water-based cosmetic used for correcting hair litter and the like of hair. More specifically, the present invention relates to a water-based cosmetic that maintains setability and gives a touch and good touch feeling, moderate moist feeling and texture.

  Conventionally, aqueous cosmetics for hair, such as hair lotion, have been used to correct hair litter, swell, swell, etc., and set a hair style. Such aqueous cosmetics for hair are generally blended with a synthetic resin such as an acrylic resin or an amphoteric resin in order to give hair-styling power (setting power) (see, for example, Patent Document 1).

  However, setting properties can be obtained by blending synthetic resins, but hair coated with water-based cosmetics feels bad to the touch, causes unnatural squeaks and wrinkles, and does not smooth the fingers. There was a problem of giving a feeling of damage.

In order to solve such a problem, a method of incorporating a conditioning agent such as a polyhydric alcohol or a silicone compound together with a setting agent such as a synthetic resin into an aqueous cosmetic is employed (for example, see Patent Document 2). . However, the conventional water-based cosmetics have a problem that even if a set agent and a conditioning agent are simply blended, the texture of each other is canceled and the setability is reduced.
JP 2003-171235 A JP 2003-183132 A

  The problem of the present invention is that it is possible to quickly correct bedclothes, sag, swell, etc., maintain setability, and have good fingering when applied to hair and dried with a dryer, etc. An object of the present invention is to provide a water-based cosmetic that provides an excellent texture such as a moist and moist feeling.

  As a result of diligent research to solve the above-mentioned problems, the present inventor has blended polyaspartic acid or a derivative thereof as a conditioning agent into a set agent made of a specific resin. The present inventors have found that a water-based cosmetic excellent in quality can be obtained, and have completed the present invention.

  That is, the aqueous cosmetic according to the present invention contains 0.01 to 10% by weight of polyaspartic acid or polyaspartic acid derivative, 0.05 to 15% by weight of non-cationic resin, and 50 to 98% by weight of water. It is characterized by doing.

  The non-cationic resin preferably includes an anionic resin and a semipolar resin. In this case, the weight ratio of the anionic resin to the semipolar resin (anionic resin / semipolar resin) is 1 to 50. It is desirable to be.

The semipolar resin is a resin containing an amine oxide group, and the anionic resin preferably contains a urethane resin.
The aqueous cosmetic of the present invention may further contain 0.05 to 20% by weight of a silicone compound and / or 0.1 to 20% by weight of a polyhydric alcohol.

  By using the aqueous cosmetic composition of the present invention, it is possible to quickly correct bedclothes, honey, swells, etc. A smooth and moist feeling can be obtained according to smooth fingers.

Hereinafter, the water-based cosmetic according to the present invention will be described in detail.
The aqueous cosmetic of the present invention contains polyaspartic acid or a polyaspartic acid derivative (hereinafter collectively referred to as “polyaspartic acids”). Polyaspartic acid is a polypeptide composed of aspartic acid that is abundant in plant peptides. The polyaspartic acid derivative is not particularly limited as long as it has a polyaspartic acid structure in the molecule. In addition, one or more functional groups such as a sulfonic acid group, an alkyl group, an amino group, a hydroxyl group, and an epoxy group may be introduced.

Examples of the polyaspartic acids include a method in which aspartic acid is polymerized by heating (J. Am.
Chem. Soc., 82, 2268 (1960)) and a method for obtaining polyaspartic acid by adding an aqueous alkaline solution to polysuccinimide asparagine (Japanese Patent Laid-Open No. 8-59821). can do. Also, commercially available polyaspartic acids may be used. The polyaspartic acid has a weight average molecular weight of usually 500 to 500,000, but is preferably about 1,000 to 10,000 in consideration of solubility in water.

  The content of the polyaspartic acid in the aqueous cosmetic of the present invention is 0.01 to 10% by weight, preferably 0.03 to 8% by weight, particularly preferably 0.05 to 6% by weight. By containing polyaspartic acid in the above range, the hair has an excellent texture and smoothness such as moderate moistness, smoothness, suppleness, and moisturization, and the hair has good cohesion and spread. It is possible to suppress the squeezing and the squeaking. If the content of polyaspartic acid is less than the above range, the blending effect may not be obtained, and if it is more than the above range, the moisturizing power becomes too high and the sticky feeling becomes strong, There is a tendency for the touch and the feeling of use to deteriorate.

  The aqueous cosmetic of the present invention contains a non-cationic resin. If the cationic resin is contained, the polyaspartic acid and the cationic resin may react with each other, and the blending effect of the polyaspartic acid may not be obtained. Therefore, it is preferable that the cationic resin is not substantially contained in the aqueous cosmetic of the present invention. Examples of non-cationic resins include anionic resins, nonionic resins, amphoteric resins, and semipolar resins.

  Examples of the anionic resin include a polyurethane (co) polymer having a urethane bond in the main chain; an acrylic (co) polymer having a structural unit derived from acrylic acid and / or methacrylic acid; vinyl acetate / crotonic acid Copolymer, vinyl acetate (co) polymer having structural units derived from vinyl acetate such as vinyl acetate / crotonic acid / vinyl neodecanoate; methyl vinyl ether / maleic anhydride alkyl half ester copolymer, etc. Can be mentioned. Of these, polyurethane resins and acrylic resins are preferred.

Nonionic resins include, for example, (co) polymers having structural units derived from vinylpyrrolidone such as polyvinylpyrrolidone, polyvinylpyrrolidone / vinyl acetate copolymer, polyvinylpyrrolidone / vinyl acetate / vinyl propionate terpolymer. Combined; Vinyl acetate / N
(Co) polymer having a structural unit derived from N-vinyl-5-methyl-2-oxazoline such as -vinyl-5-methyl-2-oxazoline copolymer; polyvinyl butyral, polyvinyl alcohol and the like.

Examples of amphoteric resins include dialkylaminoethyl methacrylate / methacrylic acid alkyl ester copolymer monochloroacetic acid amphoteric products, hydroxypropyl acrylate / butylaminoethyl methacrylate / octylamide acrylate copolymer, N-methacryloyloxyethyl- Examples thereof include N, N-dimethylammonium-α-N-methylcarboxybetaine / alkyl methacrylate copolymer.

  Examples of the semipolar resin include (co) polymers containing a semipolar group such as an amine oxide group, a sulfoxide group, and an amine imide group. In these, the (co) polymer containing an amine oxide group is preferable.

  The aqueous cosmetic of the present invention preferably contains an anionic resin and a semipolar resin as the non-cationic resin. The weight ratio of the anionic resin to the semipolar resin (anionic resin / semipolar resin) is usually 1 to 50, preferably 2 to 35, particularly preferably 3 to 20. By using a combination of an anionic resin and a semipolar resin in a weight ratio within the above range, sufficient setting properties can be obtained without impairing the conditioning effect or the like due to the polyaspartic acid.

  The content of the non-cationic resin in the aqueous cosmetic of the present invention is 0.05 to 15% by weight, preferably 0.1 to 12% by weight, particularly preferably 0.3 to 10% by weight. When the non-cationic resin is contained in the above range, sufficient setting property can be obtained without impairing the conditioning effect by the polyaspartic acid. In addition, if the content of the non-cationic resin is lower than the above range, moderate setting properties may not be obtained. If the content is higher than the above range, the setting power is excessively increased. , Tending to occur.

  In addition, it is desirable that the content of the semipolar resin in the aqueous cosmetic is 0.01% by weight or more, preferably 0.05% by weight within the above weight ratio and content range. If the content of the semipolar resin is lower than the above range, the blending effect may not be obtained.

  The aqueous cosmetic of the present invention may contain a silicone compound in order to give the hair a coating feeling and gloss. Examples of the silicone compound include dimethylpolysiloxane, methylcyclopolysiloxane, highly polymerized methylpolysiloxane, methylphenylpolysiloxane, amino-modified silicone, alkyl-modified silicone, alkoxy-modified silicone, epoxy-modified silicone, fluorine-modified silicone, and polyether-modified. Examples thereof include silicone, alcohol-modified silicone, fatty acid-modified silicone, acrylic-modified silicone, betaine-modified silicone, and silicone graft polymer. Among these, amino-modified silicone, dimethylpolysiloxane, highly polymerized methylpolysiloxane, methylcyclopolysiloxane, methylphenylpolysiloxane, and polyether-modified silicone are preferable.

  The said silicone compound may be used individually by 1 type or in combination of 2 or more types, and may be mix | blended as an emulsion. The content of the silicone compound in the aqueous cosmetic of the present invention is 0.05 to 20% by weight, preferably 0.08 to 10% by weight, particularly preferably 0.1 to 5% by weight. By containing the silicone compound in the above range, it is possible to impart moisture retention, good gloss and a coating feeling to the hair.

The aqueous cosmetic of the present invention may contain a polyhydric alcohol in order to improve the moisture retention of the hair. Examples of the polyhydric alcohol include ethylene glycol, propylene glycol, 1,3-butylene glycol, hexylene glycol, glycerin, diethylene glycol, triethylene glycol, polyethylene glycol, polypropylene glycol, and polyglycerin. Among these, propylene glycol, hexylene glycol, and glycerin are preferable because they are excellent in moisture retention of hair and can improve the low-temperature stability of aqueous cosmetics.

  The polyhydric alcohols may be used singly or in combination of two or more. The content of the polyhydric alcohol in the aqueous cosmetic of the present invention is 0.1 to 20% by weight, preferably 1 to 15% by weight, particularly preferably 3 to 10% by weight. When the polyhydric alcohol is contained in the above range, moisture retention and the like can be imparted to the hair, and the low-temperature stability of the aqueous cosmetic can be improved.

The aqueous cosmetic composition of the present invention may contain ethanol in order to impart appropriate volatility and improve hair drying after application of the aqueous cosmetic composition.
The content of ethanol in the aqueous cosmetic of the present invention is usually 0.1 to 25% by weight, preferably 1 to 20% by weight, particularly preferably 5 to 15% by weight. By containing ethanol in the above range, it is possible to obtain an appropriate drying property and excellent low-temperature stability. If the ethanol content is less than the above range, the hair will dry out and tend to remain wet, or precipitate dissolved components at low temperatures, and more than the above range. And, the texture of ethanol tends to appear too much, and there is a tendency that the hair feels crumpled, squeaky, and wrinkled, resulting in a feeling of damage.

  The aqueous cosmetic of the present invention contains water. Water is blended in order to repair the litter formed on the hair, and a high blending amount of water is required to effectively repair litter. The water used in the present invention is not particularly limited as long as it can be used as a cosmetic raw material, and examples thereof include purified water, ion exchange water, and tap water.

  The water content in the aqueous cosmetic composition of the present invention is an amount excluding the content of all ingredients other than water, and is usually 50 to 98% by weight, preferably 55 to 95% by weight, and particularly preferably 65%. ~ 90% by weight. When the water content is within the above range, excellent hair styling and the like can be obtained without impairing the effects of other components.

  Furthermore, in addition to the components described above, the water-based cosmetic of the present invention includes other components blended in ordinary cosmetics, such as alcohols, amino acids, vitamins, and proteins, within a range that does not impair the object of the present invention. , Fatty acids, enzymes, moisturizers, surfactants, chelating agents, oils, hair restorers, fragrances, pigments, antiseptics, bactericides, anti-inflammatory agents, antiperspirants, antioxidants, UV absorbers, animal and plant extracts, Organic powder, inorganic powder, pH adjusting agent, viscosity adjusting agent, and the like can be appropriately blended.

〔Example〕
EXAMPLES Hereinafter, although this invention is demonstrated concretely based on an Example, this invention is not limited to these Examples.

[Examples 1-6 and Comparative Examples 1-6]
The water-based cosmetics having the composition shown in Table 1 were prepared by thoroughly stirring until all the components were mixed and then uniform. Each sample was evaluated according to the following items, methods, and standards. The evaluation results are shown in Table 1.

<Evaluation items>
(1) Setability (2) Smoothness of the hair after use (3) Moist feeling of the hair after use (4) Touchability of the hair after use <Evaluation method>
A hair bundle having a length of 35 cm and a weight of 20 g was wetted with water, and then each hair cosmetic was sprayed about 10 times with an injector with a trigger and dried with a dryer. The hair bundle after drying was evaluated according to the following criteria by a professional evaluation panel.

<Evaluation criteria>
◎ ... very good ○ ... good △… not much changed ×… bad <evaluation result>

In Table 1, “Aqua Dew (registered trademark) SPA-30” manufactured by Ajinomoto Co., Inc. was used as the polyaspartic acid, so that sodium polyaspartate had a content shown in Table 1. As the anionic resin, “DynamX” manufactured by NSC Japan is added so that the total amount of the urethane resin and the acrylic resin becomes the content shown in Table 1, and as the semipolar resin, Mer Z-631 "was added so that the content of N, N-dimethyl-N- [2-methacryloyloxyethyl) amine-N-oxide / methacrylic acid alkyl ester copolymer was as shown in Table 1. The silicone compound is a silicone emulsion made of amino-modified silicone ("FZ-4671" manufactured by Nihon Unicar).
It is. Said substance was added so that it might become content of Table 1 in conversion of solid content.

Claims (7)

0.01 to 10% by weight of polyaspartic acid or polyaspartic acid derivative;
0.05 to 15% by weight of non-cationic resin,
An aqueous cosmetic comprising 50 to 98% by weight of water.   The aqueous cosmetic according to claim 1, wherein the non-cationic resin contains an anionic resin and a semipolar resin.   The aqueous cosmetic according to claim 2, wherein the weight ratio of the anionic resin to the semipolar resin (anionic resin / semipolar resin) is 1 to 50.   The aqueous cosmetic according to claim 2 or 3, wherein the semipolar resin is a resin containing an amine oxide group.   The aqueous cosmetic according to any one of claims 2 to 4, wherein the anionic resin contains a urethane resin.   The aqueous cosmetic according to any one of claims 1 to 5, further comprising 0.05 to 20% by weight of a silicone compound.   The aqueous cosmetic according to any one of claims 1 to 6, further comprising 0.1 to 20% by weight of a polyhydric alcohol.