JPS6341362B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention is a novel solvent-based nail enamel (hereinafter referred to as
(simply called nail enamel). More specifically, it relates to a nail enamel that is stable over time, has little adhesion or aggregation of the contents to the inner wall of the container as the contents decrease over time, and maintains its aesthetic appearance as a nail enamel over a long period of time. Stability here means that the base of nail enamel, which is composed of nitrocellulose, solvent, plasticizer, thickener, resin, etc., and pigments, etc., which are added as necessary, cause separation and form two layers. It means that there is no phenomenon to form. In addition, the cosmetics that fall within the scope of nail enamel in the present invention refer to general nail enamel, and pigments and the like are used to improve the adhesion of nail enamel or to remove nail enamel from the grooves on the nail surface. It does not include the so-called nail enamel base coat, which is applied under the nail enamel to prevent it from remaining on the nail, or the so-called nail enamel overcoat, which is applied over the nail enamel to maintain a beautiful finish. [Prior art] Nail enamel is generally made of nitrocellulose, resins such as alkyd resins, acrylic resins, and trienesulfonamide resins, and thickeners such as plasticizers, solvents, and organically modified bentonite. Pigments and the like are added to this as necessary. This kind of nail enamel is easy to apply to the nail surface, has good gloss, and does not peel off over time, and is widely used. [Problems to be solved by the invention] However, since a large amount of various types of pigments are blended, the stability over time is poor, and the content mainly composed of pigments etc. decreases due to use over time. There was a large amount of adhesion and aggregation on the inner wall of the container, which seriously impaired the aesthetic appearance, and there was no nail enamel that had excellent stability and maintained its aesthetic appearance over a long period of time. Dispersants often used in general non-aqueous systems include oligomer-type polymeric substances such as styrene-maleic anhydride copolymer partial acid, sorbitan fatty acid ester, polyoxyethylene polyoxypropylene block polymer, and alkylbenzene sulfonic acids. Salt, sodium dibutylsulfosuccinate, etc. are known. but,
These dispersants include nitrocellulose, resin,
It is completely ineffective in nail enamel, which is an extremely complex solvent system with plasticizers, solvents, thickeners, etc. as common bases. [Means for Solving the Problems] In view of these circumstances, the present inventors have conducted intensive research and found that soaps made of divalent metals and higher fatty acids, oxides of divalent metals, By incorporating alkali metal salts of fatty acids, metal salts of rosin acid, or metal salts of abietic acid, it has excellent stability over time and is effective in maintaining a beautiful appearance over a long period of time, as well as being easy to apply, glossy, and difficult to peel. It has been discovered that nail enamel can be obtained which also has the following characteristics, and based on this knowledge, the present invention has been completed. That is, the present invention provides one or two soaps selected from the group consisting of soaps composed of divalent metals and higher fatty acids, oxides of divalent metals, alkali metal salts of fatty acids, metal salts of rosin acid, and metal salts of abietic acid. The present invention provides a nail enamel characterized by containing more than one species. Soaps made of divalent metals and higher fatty acids, oxides of divalent metals, alkali metal salts of fatty acids, metal salts of rosin acid, and metal salts of abietic acid used in the present invention may be those commonly used in cosmetics. good. For example, divalent metals constituting soaps with higher fatty acids include calcium, magnesium, zinc, barium, and the like. In addition, higher fatty acids include caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid,
Examples include myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, ricinoleic acid, linolenic acid, arachidic acid, behenic acid, naphthenic acid, and the like. Examples of divalent metal oxides include calcium oxide, magnesium oxide, zinc oxide, and barium oxide. Examples of the fatty acids constituting the alkali metal salts of fatty acids include formic acid, acetic acid, saturated or unsaturated fatty acids having 3 to 22 carbon atoms, or branched fatty acids having 4 to 22 carbon atoms. Examples include sodium, sodium stearate, potassium laurate, potassium behenate, and the like. Examples of metal salts of rosin acid include sodium rosinate and potassium rosin acid, and examples of metal salts of abietic acid include sodium abietate and calcium abietate. One or more of these may be arbitrarily selected and used. The blending amount is selected within the range of 0.0005 to 0.05% by weight based on the total amount of nail enamel, preferably 0.01 to 0.03% by weight. If it is less than 0.0005% by weight, the effect of maintaining stability and aesthetic appearance will not be exhibited, and if it is more than 0.05% by weight, the thickener's chichilitropic structure will be destroyed, causing a significant decrease in viscosity, which is not preferable. Furthermore, trivalent metal soaps do not exhibit any stability or beauty-preserving effects. One or more of the above-mentioned soaps comprising divalent metals and higher fatty acids of the present invention, oxides of divalent metals, alkali metal salts of fatty acids, metal salts of rosin acid, and metal salts of abietic acid are as described above. , nitrocellulose, resin, plasticizer, solvent, and thickener as a base, and pigments and the like are added as necessary to the solvent-based nail enamel. The amount of nitrocellulose blended is generally 5 to 25% by weight based on the total amount. As the resin, for example, alkyd resin,
Examples include synthetic resins such as acrylic resin and toluenesulfonamide resin, and natural resins such as rosin and silica resin. The blending amount is generally 3 to 15% by weight. Examples of plasticizers include dibutyl phthalate,
Phthalate esters such as dioctyl phthalate,
Examples include resins based on citric acid esters such as tributyl citrate and acetyltributyl citrate. The blending amount is generally 2 to 8% by weight. Examples of the solvent include ester-based solvents such as ethyl acetate, butyl acetate, and cellosolve acetate, alcohol-based solvents such as ethyl alcohol, isopropyl alcohol, and butyl alcohol, and aromatic solvents such as toluene. The blending amount is generally 60 to 85
Weight%. Examples of the thickener include organically modified bentonite in which bentone is modified with a cation such as benzyldimethylstearylammonium or dimethylstearylammonium. The blending amount is generally 0.1 to 3% by weight. Examples of the above-mentioned pigments that may be blended as necessary include iron oxide (red), iron oxide (yellow), iron oxide (black),
Inorganic pigments such as titanium dioxide, yellow No. 4, red
Examples include organic pigments such as No. 226, Red No. 202, and Red No. 204. The blending amount is generally 5% by weight. In addition to the above-mentioned essential ingredients, the nail enamel of the present invention may contain perfumes, dyes, pearlescent agents, glitter agents, drugs, humectants, ultraviolet absorbers, etc., as necessary. Of course, these must be used under qualitative and quantitative conditions that do not impair the effects of the present invention. The nail enamel of the present invention is a nail enamel that is excellent in stability and the effect of maintaining beauty, and also has other properties required as a nail enamel such as ease of application, gloss, and resistance to peeling over time. be. [Examples and Effects of the Invention] Next, the present invention will be explained in more detail with reference to Examples. The present invention is not limited to these. The blending amount is in weight%. Example 1, Comparative Examples 1, 2, 3, 4

【table】

〔effect〕

The quality of Example 1 and Comparative Examples 1, 2, 3, and 4 was evaluated, and the results are shown in (Table 2).

【table】

[Table] As is clear from Table 2, the nail enamel of Example 1 has excellent stability and the effect of maintaining beauty.
It is also excellent in ease of application, gloss, and resistance to peeling. In comparison, Comparative Examples 1, 2, 3, and 4
It is completely unmatched in terms of stability and aesthetic effect. Moreover, peeling becomes worse. Examples 2, 3, 4, 5 Comparative examples 5, 6

[Table] * Bentone modified with dimethyldistearylammonium [manufacturing method] was added to the stirred and dissolved solution, and further was added and mixed with stirring. Note that the nitrocellulose in the raw materials used and a part of the plasticizer were kneaded with a roller in advance.

[Table] The evaluation method is the same as in (Table-2). As is clear from Table 4, the nail beauty products of the examples have excellent stability and beauty-preserving effects, are easy to apply, have a glossy appearance, and are excellent in their resistance to peeling over time.

Claims (1)

[Claims] 1. Contains one or more selected from the group consisting of a soap consisting of a divalent metal and a higher fatty acid, an alkali metal salt of a fatty acid, a metal salt of rosin acid, and a metal salt of abietic acid. A solvent-based nail enamel characterized by: 2 The higher fatty acids that make up the soap made of divalent metals and higher fatty acids are caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid, myristic acid, palmitic acid,
Stearic acid, oleic acid, linoleic acid, ricinoleic acid, linolenic acid, arachidic acid, behenic acid,
or naphthenic acid, the solvent-based nail enamel according to claim 1. 3. Claim 1 or 2, wherein the divalent metal constituting the soap consisting of a divalent metal and a higher fatty acid is calcium, magnesium, zinc, or barium.
Solvent-based nail enamel as described in section. 4. The solvent-based nail according to claim 1, wherein the fatty acid constituting the alkali metal salt of fatty acid is formic acid, acetic acid, a saturated or unsaturated fatty acid having 3 to 22 carbon atoms, or a branched fatty acid having 4 to 22 carbon atoms. enamel. 5. The solvent-based nail enamel according to claim 1, wherein the metal salt of rosin acid is sodium rosin acid or potassium rosin acid. 6. The solvent-based nail enamel according to claim 1, wherein the metal salt of abietic acid is sodium abietate or calcium abietate. 7 The content of one or more selected from the group consisting of soaps consisting of divalent metals and higher fatty acids, alkali metal salts of fatty acids, metal salts of rosin acid, and metal salts of abietic acid is 0.0005 to 0.05 in the total amount. weight%
A solvent-based nail enamel according to any one of claims 1 to 6. 8 The content of one or more selected from the group consisting of soaps consisting of divalent metals and higher fatty acids, alkali metal salts of fatty acids, metal salts of rosin acid, and metal salts of abietic acid is 0.01 to 0.03 in the total amount. A solvent-based nail enamel according to any one of claims 1 to 6, which is % by weight. 9 Solvent-based nail enamel is nitrocellulose,
A solvent-based nail enamel according to any one of Items 1 to 8, which contains a resin, a plasticizer, a pigment, a solvent, and a thickener. 10. The solvent-based nail enamel according to claim 9, wherein the thickener is organically modified bentonite.