JP3197797B2 - Gel composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gel composition, and more particularly, to an external preparation for skin or hair, which has good spreadability upon application, has an excellent feeling upon use, and has excellent storage stability over time. The present invention relates to a gel composition suitable for:

[0002]

2. Description of the Related Art
Anionic surfactants such as alkyl sulfates, polyoxyethylene alkyl ether sulfates, and α-olefin sulfonates are widely used as surfactants for gel compositions. However, all of these anionic surfactants have the disadvantage that, to varying degrees, they induce skin irritation.

[0003] Conventionally, gel compositions generally include microemulsions. However, since a large amount of a surfactant is used, there is a problem that the skin is irritated. As a solution to these problems, Japanese Patent Publication No. 53845/1993 proposes a liquid crystal oil-based cosmetic in which a hydrophilic nonionic surfactant, a hydroxyl group-containing water-soluble component and an oil component are blended. However, although the storage stability after days is excellent, it has a drawback that the gel has a strong elasticity and stickiness when used, and is difficult to use.

[0004] In view of the above circumstances, the present inventors have conducted intensive studies and have found that (A) a monomer containing a specific long-chain alkyl acrylate monomer and a specific amount of an olefinically unsaturated carboxylic acid monomer as copolymerization components. Polymer from mixture: (B) a nonionic surfactant having an HLB of 10 or more; (C) a specific amount of a liquid oil; and a gel composition characterized by excellent spreadability during application and excellent use. Having a feeling, and found that it becomes a gel composition having excellent storage stability over time,
The present invention has been reached.

[0005] That is, the present invention provides a gel composition which has an excellent feeling of use such as good spreadability upon application, little stickiness, no stringiness, easy handling, and excellent storage stability over time. The purpose is to provide.

[0006]

Means for Solving the Problems According to the present invention, which achieves the above object, there is provided a gel composition comprising the following components (A) to (C). (A) 1 to 50% by weight of a long-chain alkyl acrylate monomer represented by the following general formula (1) as a copolymer component:

[0007]

Embedded image (Where R is an alkyl group having 10 to 30 carbon atoms,
R 'is hydrogen or a methyl group. A) a polymer from a monomer mixture containing 99 to 50% by weight of an olefinically unsaturated carboxylic acid monomer; (B) a nonionic surfactant having an HLB of 10 or more; and (C) a liquid of 40 to 85% by weight based on the final composition. oil

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail.

The long-chain alkyl acrylate monomers used in the present invention include, for example, those having 10 carbon atoms such as decyl acrylate, lauryl acrylate, palmityl acrylate, stearyl acrylate and behenyl acrylate.
-30 alkyl acrylates, preferably 12 carbon atoms
And at least one monomer selected from the group consisting of alkyl acrylates and corresponding methacrylates, and olefinically unsaturated carboxylic acid monomers,
For example, olefinic double bonds such as acrylic acid, methacrylic acid, α-chloro-acrylic acid, α-phenylacrylic acid, sorbic acid, cinnamic acid, maleic acid, fumaric acid, or maleic anhydride and at least one One or more monomers selected from the group of polymerizable compounds containing a carboxyl group, preferably acrylic acid which is easily available and has excellent polymerization ability. As the copolymer from the long-chain alkyl acrylate and the olefinically unsaturated carboxylic acid monomer, in addition to the long-chain alkyl acrylate and the olefinically unsaturated carboxylic acid monomer, which are the essential components, preferably a copolymer To adjust the properties of the coalescence, olefinic polyfunctional monomers such as methylene bisacrylamide, allyl acrylate, methallyl methacrylate, divinyl ether, allyl sucrose, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, and glyceryl triacrylate are used. Copolymers having a crosslinked structure that are blended and polymerized can be used in the present invention. The compounding amount of the olefin-based polyfunctional monomer is preferably about 0.01 to about 4% by weight, more preferably 0.2 to 1% by weight, based on the total amount of the long-chain alkyl acrylate monomer and the acrylic acid-based polymer. 0% by weight. These copolymers are described, for example, in JP-A-51-6190 and JP-A-2-3.
It can be produced by the method described in U.S. Pat. The average molecular weight of the produced copolymer is about 50
Those having a molecular weight of 000 to 5,000,000 are preferred. Specific examples of these copolymers include Pemulen (P
EMULEN), Carbopol 1342 (B.B.
F. Goodrich Chemical Co., Ltd.). In addition, as for the compounding quantity of the said copolymer in this invention, 0.01-5.0 weight% is preferable with respect to the composition whole quantity. When the content is within this range, a preferable gel composition is obtained. When the content is less than 0.01% by weight, the stability of the gel composition tends to be poor. When the content is more than 5.0% by weight, stickiness during use becomes large. , Thread may be difficult to handle.

The neutralizing agent for the long-chain alkyl acrylate / olefinically unsaturated carboxylic acid copolymer in the present invention includes alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, lysine, arginine, histidine and ornithine. Basic amino acids such as triethanolamine, 2-
Examples thereof include organic amines such as amino-2-methyl-1-propanol, tris (hydroxymethyl) aminomethane, 2-hydroxypropylethylenediamine, and diisopropanolamine, and basic polypeptides, and may be used as appropriate.

HL used as component (B) in the present invention
As the nonionic surfactant having a B value of 10 or more, for example, polyoxyethylene alkyl ether, polyoxypropylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyethylene glycol fatty acid ester, ethylene oxide derivative of propylene glycol fatty acid ester, Polyoxyethylene sorbitan fatty acid ester, ethylene oxide derivative of glycerin fatty acid ester, ethylene oxide derivative of polyglycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester, polyoxyethylene pyroglutamate, polyoxyethylene Polyoxyalkylene-type nonionic surfactants such as glycerin pyroglutamate, sucrose fatty acid esters,
Examples thereof include alkyl glucosides, polyglycerin fatty acid esters, fatty acid alkylolamides, and the like. These are nonionic surfactants having a hydrophobic group such as an alkyl group, a phenyl group, and a fatty acid residue having 8 to 36 carbon atoms.

More specifically, polyoxyethylene (3
0) hydrogenated castor oil, polyoxyethylene (40) hydrogenated castor oil, polyoxyethylene (50) hydrogenated castor oil, polyoxyethylene (60) hydrogenated castor oil, polyoxyethylene (15) decyltetradecyl ether, polyoxyethylene (20) decyl tetradecyl ether, polyoxyethylene (25) decyl tetradecyl ether,
Polyoxyethylene (10) hexyl decyl ether,
Polyoxyethylene (15) hexyl decyl ether,
Polyoxyethylene (20) hexyl decyl ether,
Polyoxyethylene (25) hexyl decyl ether,
Polyoxyethylene (10) octyl dodecyl ether, polyoxyethylene (16) octyl dodecyl ether, polyoxyethylene (20) octyl dodecyl ether, polyoxyethylene (25) octyl dodecyl ether, polyoxyethylene (15) glyceryl monoisostea Polyoxyethylene (30) glyceryl monoisostearate, polyoxyethylene (3
0) glyceryl triisostearate, polyoxyethylene (40) glyceryl triisostearate, polyoxyethylene (30) trimethylolpropane trimiristate, polyoxyethylene (6) sorbitan monolaurate, polyoxyethylene (20) Sorbitan monolaurate, polyoxyethylene (20) monostearate, polyoxyethylene (20) sorbitan monooleate, polyoxyethylene (30) sorbitol tetraoleate, polyoxyethylene (40) sorbitol tetraoleate, polyoxyethylene (10 ) Cetyl ether, polyoxyethylene (15) cetyl ether, polyoxyethylene (20) cetyl ether, polyoxyethylene (25) cetyl ether, polyoxyethylene (10) oleyl Ether, polyoxyethylene (1
5) Oleyl ether, polyoxyethylene (20) oleyl ether, polyoxyethylene (25) oleyl ether, polyoxyethylene (10) nonylphenyl ether, polyoxyethylene (10) nonylphenyl ether, polyoxyethylene (15) nonyl Phenyl ether, polyoxyethylene (20) nonyl phenyl ether, polyoxyethylene (25) nonyl phenyl ether, polyoxyethylene (20) cholesteryl ether, polyoxyethylene (30) cholesteryl ether, coconut oil fatty acid diethanolamide (1: 1) Type),
Examples thereof include coconut oil fatty acid diethanolamide (1: 2 type), lauric acid diethanolamide, coconut oil fatty acid monoethanolamide, and polyoxyethylene coconut oil fatty acid monoethanolamide.

These components (B) are used alone or in combination of two or more. The amount of the nonionic surfactant is preferably 1.0 to 3 based on the weight of the final composition.
0.0% by weight, more preferably 2.0 to 15.0% by weight
Be blended. If the amount is less than 1% by weight based on the weight of the final composition, gel is difficult to form, and if it exceeds 30% by weight, the feeling of use tends to be poor.

The liquid oil used as the component (C) in the present invention includes diethers such as ethylene glycol dioctyl ether, cetyl octoate, octyl dodecyl myristate, isopropyl myristate, butyl stearate, myristyl myristate, and olein. Monoesters such as decyl acid and oleyl oleate; higher alcohols such as isostearyl alcohol, octyldodecanol and oleyl alcohol; di-2-ethylhexyl sebacate, di-2-ethylhexyl adipate and propylene glycol didecanoate Diesters, tri-2-
Triesters such as glyceryl ethylhexanoate, methylolpropane tri-2-ethylhexanoate, glyceryl tri (caprylate / caprate), liquid paraffin,
Hydrocarbons such as squalene and squalane, jojoba oil, olive oil, avocado oil, linseed oil, kukui nut oil, grape seed oil, safflower oil, macadamia nut oil,
Vegetable oils such as rosehip oil and the like can be mentioned.

The amount of the liquid oil used in the present invention is 40 to 85% by weight, preferably 50 to 85% by weight, more preferably 60 to 80% by weight, based on the weight of the final composition. . When the amount is less than 40% by weight based on the weight of the final composition, no gel is formed or the storage stability is insufficient. When the amount exceeds 85% by weight, the storage stability of the gel is insufficient. , The feeling of use becomes worse.

The above-mentioned components are essential components in the gel composition of the present invention, and other components may be appropriately added to the composition as long as the object of the present invention is achieved. I can do it.

That is, amphoteric surfactants such as alkylamidopropylbetaine, water-soluble polymers such as hydroxypropylmethylcellulose and hydroxyethylcellulose, cationic polymers [Polymer JR (manufactured by Union Carbide Corporation), Polycoat NH (manufactured by Henkel) ), Marcoat 550 (Merck), Guffcut 75
5N (manufactured by GAF), anti-dandruff agents such as zinc pyrithione and octopirox, fungicides such as triclosan and trichlorocarban, glycerin, 1,3-butylene glycol, polyethylene glycol, ethylene glycol, propylene glycol, sorbit, sorbitan, Moisturizing agents such as maltose, trehalose, and marbit, antioxidants, ultraviolet absorbers, organic and inorganic powders, pH regulators such as citric acid, pigments and fragrances, and the like can be added.

The gel composition of the present invention is applied to any skin or hair external preparations such as shampoos, body shampoos, facial cleansers, ointments and the like, without any particular limitation on the form of the composition. Above all, from the viewpoint of maximally and effectively utilizing the gel-like form of the present invention, a face wash for removing makeup is most preferred.

[0019]

The present invention will be described in more detail with reference to the following examples. The effect was measured according to the following evaluation test method.

(Practical test: feeling of use) Twenty women (specialized panelists) used the sample continuously for one week, and evaluated the feeling of use according to the following evaluation criteria. Evaluation code ◎: 18 or more respondents who answered "Less stickiness, no string pulling, good spreadability, easy to handle" ○: "Less stickiness, no string pulling, good spreadability, handling 14 to 17 people answered "Easy". 8: 13 people answered "Less stickiness, no string pulling, good stretch, and easy to handle". X: "Low stickiness, It is easy to handle without stretching the string. ”

(Storage Stability Test) The sample was left in a constant temperature room at a temperature of 45 ° C., and the number of days that the gel appearance was maintained was observed. In addition, observation was performed with the naked eye and judged.

Example 1, Comparative Examples 1 to 4 The compositions for removing makeup shown in Table 1 were prepared by the following methods to obtain compositions of Examples and Comparative Examples. As a production method, each component in Table 1 is heated and mixed at 80 ° C.
This was stirred and cooled to 30 ° C. to prepare each makeup removing composition. Perform the above evaluation test using this as a sample,
Table 1 shows the results.

[0023]

[Table 1]

In Example 1 of the gel composition for makeup removal using the components of the present invention, all exhibited excellent performance and also had excellent makeup removal effects. On the other hand, Comparative Examples 1 and 2, in which the essential components, long-chain alkyl acrylate / acrylic acid copolymer and nonionic surfactant were not blended, could not maintain the gel form immediately after production. Further, Comparative Examples 3 and 4, which lacked 40% by weight or more of the liquid oil based on the weight of the final composition, had insufficient practical test results (usability) and storage stability results. Could not be achieved.

Example 2, Comparative Examples 5 to 6 A cleansing composition using the components of the present invention is shown in Table 2.
Was adjusted according to Example 1 to obtain each cleansing gel composition. Table 2 also shows the results evaluated by the above test methods.

[0026]

[Table 2]

The gel composition for cleansing of Comparative Example 5 tends to have poor storage stability due to the use of a nonionic surfactant having an HLB value of less than 10 of the nonionic surfactant. Also, in the case of Comparative Example 6, the liquid oil was too much, and did not gel, and the feeling of use was poor and the storage stability tended to be poor.

Example 3 The gel-like shampoo compositions shown in Table 3 using the components of the present invention were prepared by a usual method and evaluated by the above-mentioned methods. All the items were excellent evaluations as in Example 1.

[0029]

[Table 3]

Example 4 The gel body cleansing compositions shown in Table 4 using the components of the present invention were prepared by a conventional method and evaluated by the above method. All items were excellent evaluations as in Example 1.

[0031]

[Table 4]

Example 5 Using the components of the present invention, the gel cleansing composition shown in Table 4 was prepared by a usual method and evaluated by the above method.
All the items were excellent evaluations as in Example 1.

[0033]

[Table 5]

[0034]

As described above, it is apparent that the present invention provides a gel composition having a good feeling upon use and excellent storage stability over time.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI C08K 5/04 C08K 5/04 C08L 33/02 C08L 33/02 33/06 33/06 C11D 1/66 C11D 1/66 1 / 72 1/72 1/74 1/74 3/37 3/37 (56) References JP-A-8-151316 (JP, A) JP-A-7-196453 (JP, A) JP-A-3-169804 ( JP, A) JP-A-62-161711 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61K ⁷ /00-7/50 C08L 33/00-33/26 C11D 1 / 00-3/60 CA (STN) REGISTRY (STN)

Claims (1)

(57) [Claims] 1. A gel composition comprising the following components (A) to (C): (A) 1 to 50% by weight of a long-chain alkyl acrylate monomer represented by the following general formula (1) as a copolymer component: (Where R is an alkyl group having 10 to 30 carbon atoms,
R 'is hydrogen or a methyl group. A) a polymer from a monomer mixture containing 99 to 50% by weight of an olefinically unsaturated carboxylic acid monomer; (B) a nonionic surfactant having an HLB of 10 or more; and (C) a liquid of 40 to 85% by weight based on the final composition. oil