JPH0469318A - Manicure - Google Patents

Abstract

PURPOSE:To obtain a manicure having excellent emulsion stability and coating film dryability and high safety to nail by compounding a silicone graft copolymer. CONSTITUTION:A silicone graft copolymer is produced by conventional radical polymerization of an acryl-modified silicone and a radically polymerizable monomer (e.g. methacrylic acid). The objective W/O-type emulsion manicure can be produced by compounding 0.2-10wt.% of the graft copolymer, 5-25wt.% of nitrocellulose, 50-85wt.% of a solvent (e.g. isopropyl alcohol), 0.5-30wt.% of water, 0.3-20wt.% of a water-soluble polymer (based on water) and proper amounts of conventional manicure components such as a resin other than the silicone graft copolymer, a plasticizer and a pigment.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a novel nail beauty product.

More specifically, the present invention relates to a W10 emulsified nail polish that has excellent emulsion stability, ease of application, drying properties, gloss of a coating film, and peeling properties, and is highly safe for nails.

[Prior Art] In recent years, the quality of nail beauty products has significantly improved, especially with advances in nitrocellulose lacquer, and they have become indispensable as make-up cosmetics.

Among these qualities, safety for nails is particularly important.

Conventionally, resins have been used to improve the safety of nail polishes on nails.
Techniques related to solvent composition are disclosed. As a technology related to improving the safety of resins, Japanese Patent Publication No. 13336/1983 incorporates sucrose bene zoate and sucrose acetate isobutyrate instead of sulfonamide resin, which disperses and releases formalin, which has a negative effect on nails. The technology to do so is described. As a technology related to the safety of solvents, Japanese Patent Application Laid-open No. 160753/1983 discloses a nail polish that does not contain aromatic hydrocarbons such as toluene and xylene. These techniques all relate to solvent-based nail polishes and have the disadvantage that they are not sufficiently safe in that they cannot replenish moisture to the nails.

Furthermore, as a technology for nail beauty products that does not contain a solvent, Japanese Patent Application Laid-Open No. 54-28836 describes a nail beauty coating agent that is made of an aqueous emulsion liquid polymer obtained by aqueous emulsion polymerization of specific monomers. . However, water-based nail polishes contain a large amount of water, which has a much higher heat of evaporation and specific heat than solvents, so they give a strong cooling sensation when applied, which may be a problem for people with thin nails. It had the disadvantage that the ``feeling'' was a strong stimulus. Furthermore, these water-based nail preparations have the drawbacks of being inferior in water resistance and adhesion to nails, and insufficient peeling properties, compared to solvent-based nail preparations.

Furthermore, Japanese Patent Application Laid-open No. 111909/1989 discloses that a solvent-based nail polish has been developed to improve nail safety while maintaining ease of application, gloss of the paint film, peeling properties, etc. A technique related to a W10 emulsified nail beauty product containing water is described.

[Problems to be Solved by the Invention] However, the emulsion stability of the W10 emulsified nail polish is still not sufficient, and it also has the drawback of slow drying speed because it contains water with a slow evaporation rate. Ta.

In view of these circumstances, the present inventors have conducted extensive research to solve the above-mentioned drawbacks, and as a result, we have developed a silicone-based graft made by radically polymerizing acrylic-modified silicone and a radically polymerizable monomer to W10 emulsified nail polish. If the copolymer is blended, it will have excellent emulsion stability and drying properties of the coating film.
Moreover, it was discovered that it also satisfies other properties as a nail beautifying agent, and based on this knowledge, the present invention was completed.

A cosmetic containing the above-mentioned silicone-based graft copolymer as a film-forming agent is disclosed in JP-A-2-25411. In contrast, the present invention exhibits excellent effects on emulsion stability and drying properties of the coating film, especially in the W10 emulsion type nail polish among cosmetics.

[Means for Solving the Problems] That is, the present invention provides a W10 emulsified nail polish containing nitrocellulose, a solvent, a water-soluble polymer, and water, in which acrylic-modified silicone and a radically polymerizable monomer are radically polymerized. The present invention provides a W10 emulsified nail polish containing a silicone-based graft copolymer.

Hereinafter, the configuration of the present invention will be explained in detail.

The silicone-based graft copolymer used in the present invention is
It is synthesized by radical copolymerization of acrylic-modified silicone (A) and radically polymerizable monomer (B).

The acrylic modified silicone (A) has the following general formula (1
) and the acrylic compound represented by general formula (II) per 5i-0 old equivalent of (1) (I
It can be obtained by condensation reaction of 5i-X of I) at a ratio of 0.25 to 1 equivalent.

(I) R+ (Si ○), H (R+ is a monovalent aliphatic hydrocarbon group with 1 to 10 carbon atoms, a phenyl group, a -valent halogenated hydrocarbon group, or a hydroxyl group. R
2 and R3 are a monovalent aliphatic hydrocarbon group having 1 to 10 carbon atoms, a phenyl group, or a -valent halogenated hydrocarbon group. n is an integer of 1 or more. )R4Re (II) CH2=CC-ORs Si
Xo R6 and/or CH2=CCORM Si (B) is blocked by one or two ether bonds. R6 is a methyl group, ethyl group, or phenyl group. X is a chlorine atom, methoxy group, or ethoxy group. Methacrylic acid, methyl methacrylate, ethinomethacrylate, butyl methacrylate, 2-ethylhexyl methacrylate, cyclohexyl methacrylate, stearyl methacrylate, acrylic acid, methyl acrylate, ethyl acrylate, butyl acrylate, styrene, styrene substituted product , vinyl esters of organic acids such as vinyl acetate, low molecular weight linear hydrocarbons such as ethylene and propylene, vinyl chloride, vinylidene chloride, polyoxyethylene monomethacrylate, and the like.

The copolymerization of the acrylic-modified silicone and the radically polymerizable monomer proceeds extremely smoothly, and a silicone-based graft copolymer can be obtained. Further, its molecular weight can be controlled by known polymerization techniques. The copolymerization ratio of the acrylic modified silicone and the radically polymerizable monomer in the silicone-based graft copolymer produced in this way is such that the silicone content in the resulting silicone-based craft copolymer is 5 to 80% by weight. , preferably 10~
It is desirable that it be 70% by weight. The molecular weight of the silicone-based kraft copolymer is about 3,000 to about 20 in terms of weight average molecular weight in terms of polystyrene determined by GPC.
0,000, more preferably about 5,000 to about 100
．． It is desirable that the value be in the range of 000.

The above-mentioned acrylic-modified silicone and silicone-based graft copolymers obtained by radically polymerizing the acrylic-modified silicone and a radically polymerizable monomer are, for example,
-30715. It can be manufactured by the method disclosed in Japanese Patent Publication No. 1-60162.

Commercially available silicone graft copolymers include Toagosei (a) Aron G5-30 and the like.

The blending amount depends on the molecular weight of the silicone-based graft copolymer, but if the weight average molecular weight in terms of polystyrene in GPC is about 30.000, it will be 0.2% to 1% of the total amount of nail polish.
It is selected in the range of 0% by weight, preferably 1-3% by weight. If it is less than 0.2% by weight, the effects of improving emulsion stability and drying properties will not be sufficient, and if it exceeds 10% by weight, the ease of application will be poor, which is not preferable.

As the nitrocellulose used in the present invention, commonly used and well-known nitrocellulose can be used.

Examples include nitrocellulose 1/2 sec, nitrocellulose l/' 4 sec, nitrocellulose 1/8 sec, nitrocellulose 1/4 sec, and the like. One or more types are arbitrarily selected from these. The amount of compounding is generally moistened with 30% isopropyl alcohol (
(hereinafter referred to as 30% isopropyl alcohol wetness)
It accounts for 5 to 25% by weight of the total amount of nail polish.

As the solvent used in the present invention, commonly used ester-based, alcohol-based, hydrocarbon-based, and other well-known solvents can be used. For example, ethyl acetate, butyl acetate, amyl acetate, ethyl alcohol, isopropyl alcohol,
Examples include butyl alcohol and toluene. One or more types may be arbitrarily selected from these. The blending amount is generally 50 to 85% by weight based on the total amount of the nail polish.

In the present invention, the amount of water blended is 0.5 to 3 in the total amount of nail polish.
0% by weight, preferably 3-15% by weight. If the water content is less than 0.5%, the effect of improving nail safety will not be sufficient, and if it exceeds 30% by weight, a cooling sensation will occur when applied.
It is undesirable because it becomes hard and can cause strong irritation, especially for people with thin nails.

Examples of water-soluble polymers used in the present invention include cellulose-based, acrylic-based, vinyl-based, polyamide-based, protein-based, and polysaccharide-based water-soluble polymers. For example, hydroxypropyl cellulose, methacrylic acid ester amphoteric polymer, polyvinyl alcohol, casein Na%
Examples include hyaluronic acid or its salts. The blending amount is 0.3 to 20% by weight based on water, preferably 0.5 to 20% by weight.
It is 15% by weight.

In addition to the above-mentioned components, the nail beauty preparation of the present invention may optionally contain:
Contains resins other than silicone graft copolymers, plasticizers, pigments, fragrances, dyes, pearl agents, glitter agents, drugs, moisturizers, ultraviolet absorbers, matting agents, fillers, surfactants, metal soaps, etc. can do. Of course, these must be used under qualitative and quantitative conditions that do not impair the effects of the present invention.

Resins other than the silicone graft copolymer used in the present invention include alkyd resins, acrylic resins,
Examples include synthetic resins such as sulfonamide resins and sucrose benzoate resins, and natural resins such as rosin and shellac.

The blending amount is generally 5 to 20% by weight based on the total amount of the nail polish.

As the plasticizer used in the present invention, well-known plasticizers such as phthalate esters and citric esters can be used. Examples include dibutyl phthalate, dioctyl phthalate, acetyl tributyl citrate, and camphor. One or more types are arbitrarily selected from these. The amount added is generally 2-8% by weight of the total amount of nail polish.
It is.

Pigments used in the present invention include, for example, inorganic pigments such as iron oxide (red), iron oxide (yellow), iron oxide (black), titanium oxide, Yellow No. 4, Red No. 226, Red No. 202, Red 2
Examples include organic pigments such as No. 04. The blending amount is generally 5% by weight or less based on the total amount of the nail polish.

[Effects of the Invention] The W10 emulsified nail beauty product of the present invention is a nail beauty product that is highly safe for nails with excellent emulsion stability and drying properties of the coating film, and also meets other requirements as a nail beauty product. It has the following characteristics.

[Example] 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%. Prior to Examples, the effectiveness testing method and evaluation method of the present invention will be described.

Emulsion stability Each sample was filled into two 15rnl glass pins,
These were left at room temperature and 50° C. for 5 months, and the state of each separation was evaluated.

Both were not separated at all...
・・・・・・・・・・・・◎One or both separated slightly・・・○One or both separated・・・・・・・・・・・・・・・◇One of the two was very separated...
・・・・・・△Both were very separated・・・・・・・・・
・・・・・・・・・・・・・・・・・・×Ease of application Sensory evaluation was performed in actual use.

Very easy to apply・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・◎
Slightly easy to apply・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・○ Slightly difficult to apply・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・◇Difficult to paint・・・・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・△Very difficult to apply・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・・・・
・・・・・・・・・× Moxibustion blood 11 In actual use, the time taken from immediately after application until no fingerprints remain when touched with a fingertip was measured: 2 to 3 minutes 3 to 4 minutes 4 to 5 minutes 5 ~6 minutes 6 minutes or more (hereinafter referred to as blank space) Examples 1 to 8, Comparative Examples 1 to 5 W/○ emulsified nail polishes were manufactured with the compositions shown in Table 1, and the quality of each was evaluated.

(Production method) After stirring and mixing acetyltriethyl citrate and a solvent,
Add nitrocellulose and resin and stir to dissolve. Next, the pigment and organic bentonite gelling agent were added and dispersed with stirring, and then the water-soluble polymer aqueous solution and 1,3-butylene glycol were added and uniformly stirred (emulsified) to form a W10 emulsified nail polish. Obtained.

As is clear from Table 1, Examples 1 to 8 in which silicone-based graft copolymers were blended had good emulsion stability, ease of application,
It was excellent in each item of drying speed.

Furthermore, there were no problems with the brittleness of the coating film or its adhesion to nails. On the other hand, Comparative Example 1 did not contain a silicone-based graft copolymer, and Comparative Example 2 contained a small amount of silicone-based kraft copolymer, resulting in poor emulsion stability and drying speed, which was not preferable. . Comparative Example 3 was unfavorable because the amount of silicone graft copolymer was too large, resulting in poor ease of application. Comparative Example 4, in which ease of application was improved by reducing the amount of resin other than nitrocellulose and silicone-based kraft copolymer, was unfavorable in terms of brittleness of the coating film and poor adhesion to nails.

Claims (2)

[Claims] (1) In a W/O emulsion type nail polish containing nitrocellulose, a solvent, a water-soluble polymer, and water, a silicone-based graft copolymer obtained by radically polymerizing an acrylic-modified silicone and a radically polymerizable monomer is used. A W/O emulsified nail beauty product characterized by containing: (2) W/O emulsion type beautiful nails according to claim 1, wherein the amount of the silicone graft copolymer obtained by radical polymerization of acrylic modified silicone and a radically polymerizable monomer is 0.2 to 10% by weight. fee.