JP2630428B2 - Color pigments and cosmetics containing the same - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a novel color pigment, and more particularly, to a color pigment which is excellent in water resistance and oil resistance and does not stain on skin, clothing, etc. And a cosmetic containing the same.

[Conventional technology and its problems]

Conventionally, various dyes and pigments have been used as coloring agents for cosmetics and the like. Of these, dyes are generally organic compounds and have a wide variety of colors, which can broaden the range of products such as makeup cosmetics. There was a disadvantage that it was difficult. On the other hand, pigments are generally inorganic powders and have no problems such as dyeing, but have the disadvantage that the types of colors are limited and that it is difficult to obtain a desired color tone.

Therefore, in order to obtain a colorant utilizing the characteristics of the dye and the pigment, attempts have been made to convert the dye into a pigment.

However, the conventional pigmentation technology, which is mostly based on the binding of dyes and powders by adsorption, is inferior in water resistance and oil resistance and has not been satisfactory. Was.

[Means for solving the problem]

The present inventors, in view of such circumstances, as a result of intensive research to obtain a colorant having excellent water resistance and oil resistance, as a result of mixing a dye and a specific polymer compound as a binder, It has been found that if the powder is used to coat the surface of the powder, the above-mentioned demand can be satisfied, and a colorant free from dyeing and having good color development can be obtained. In addition, it has been found that by blending this coloring pigment, a cosmetic having a color tone which has never existed in the past, having a clear coating color, and having good persistence of makeup can be obtained.

That is, the present invention provides a colored pigment obtained by coating the surface of a powder with a dye and an acrylic polymer compound, and a cosmetic containing the same.

The powder used in the present invention is not particularly limited, but usable powders include, for example, cosmetic powders. Specific examples include talc, kaolin, mica, magnesium carbonate, calcium carbonate, magnesium silicate, and silicate. Inorganic and white pigments such as aluminum magnesium, silica, titanium oxide, zinc oxide and aluminum oxide, inorganic colored pigments such as yellow iron oxide, nylon powder, polyethylene powder, styrene powder, polytetrafluoroethylene powder, silk powder, crystalline cellulose And organic powders such as N-lauroyl-L-lysine, and pearlescent agents such as titanium mica, titanium mica iron oxide and bismuth oxychloride. These powders, depending on the purpose of use such as cosmetics,
One or two or more are selected and used.

Further, the acrylic polymer compound used as a binder in the present invention includes (a) acrylic acid, methacrylic acid, alkyl acrylate, alkyl methacrylate, N-acrylamide, and N-methacrylamide. Polymer compounds obtained by copolymerizing at least one to three kinds, for example, commercially available products include plastic size (manufactured by Ryo Kagaku), Lohagit (manufactured by Rohm), and the like.

Some of these polymer compounds may be used after neutralization when used. In such a case, the neutralizing agent is not particularly limited, and may be an alkali metal salt such as sodium or potassium, an ammonium salt, or diethanolamine. And organic bases such as triethanolamine and aminomethylpropanediol.

Further, as another acrylic polymer compound, at least one of (ii) alkylaminoethyl acrylate, alkylamino methacrylate, alkyl acrylate, alkyl methacrylate, acrylic acid, and methacrylic acid is used. Polymer compounds obtained by copolymerizing 3 types and amphoteric with halogenated acetic acid, for example, commercially available products include Yukaformer AM-75 (manufactured by Mitsubishi Yuka Co., Ltd.).

The polymer compounds (a) and (b) may be used alone or in combination.

Among these acrylic high molecular compounds, particularly preferred are the acrylic high molecular compounds (a) which are acrylic or methacrylic esters of aliphatic alcohols having 4 to 18 carbon atoms, acrylic acid, methacrylic acid and carbon. The copolymer of acrylic acid ester or methacrylic acid ester of Formulas 1 to 3, and the acrylic high molecular compound of (b)
The following groups (I) and (II): (I) dimethylaminoethyl (meth) acrylate,
Diethylaminoethyl (meth) acrylate (II) Stearyl (meth) acrylate Lauryl (meth) acrylate Lauryl (meth) butyl acrylate Ethyl (meth) acrylate What has been amphoteric after treatment can be mentioned.

The average molecular weight of the acrylic polymer compound is 1
It is preferable that the viscosity is from 000 to 100,000 and the viscosity is 50,000 cs or more. If the viscosity is within this range, a satisfactory product can be obtained in terms of safety, adhesion to powder, use characteristics, and the like.

The dye used in the present invention may be any one of a water-soluble dye and an oil-soluble dye, and is not particularly limited. Considering the ease of processing, etc., Red No. 104 (1), Red No. 105 (1), Red No. 106, Red No. 201, Red No. 213, Red No. 215 are preferable.
No., Red No. 218, Orange No. 205, Orange No. 207, Yellow No. 4, Yellow No. 202 (1), Yellow No. 406, Green No. 3, Green No. 202, Green No. 204, Green No. 205, Blue No. 1, Blue No. 205, Blue 403
No. 201, Brown No. 201, Purple No. 201, Purple No. 401, Black No. 401 and the like.

The production of the coloring pigment of the present invention, for example, an acrylic polymer compound and a dye uniformly dissolved in a solvent such as ethyl alcohol, or mixed with powder or sprayed on the powder,
This is performed by heating to evaporate the solvent.

More specifically, 1/1000 to 1/5, preferably 1/100 to 1/10 part by weight of the dye based on 1 part by weight of the acrylic polymer compound, about 10 to 100 parts by volume of the dye. Dissolved in a solvent,
The total amount of the acrylic polymer compound and the dye in this solution is 1
Add 200-5 parts by weight of powder to 70 parts by weight
It is prepared by evaporating the solvent at a moderate temperature.

If the dye is less than 1/1000 parts by weight with respect to the acrylic polymer, the coloring is poor and the desired product cannot be obtained. Conversely, 1 /
If it exceeds 5, the solubility of the dye in the acrylic polymer compound becomes poor, and the dye is eluted, which is not preferable.

On the other hand, if the amount of the powder exceeds 200 parts by weight, the intended coloring pigment cannot be obtained, and if the amount is less than 5 parts by weight, the properties of the polymer will be exhibited, and the feeling of use will deteriorate, which is not preferable.

The coloring pigment thus obtained is preferably blended in various cosmetics.

The cosmetics in which the coloring pigment according to the present invention can be blended may be in any form of powder, pressed, liquid, and stake, regardless of the product form and shape. Examples thereof include powdered white powder, fudansion, and hoho. Red, eye shadow, lipstick, eyeliner, mascara, eyebrow and the like.

The amount of the coloring pigment of the present invention to be added to the cosmetic is not particularly limited depending on the type and form of the product, but is preferably in the range of 1 to 99% by weight. When blending the color pigment, the color pigment obtained by applying a coating treatment to a single powder may be incorporated into the cosmetic, or the entire powder system of the cosmetic may be subjected to the coating treatment.

In the cosmetic of the present invention, in addition to the above-mentioned color pigments, other components usually used as raw materials for cosmetics include white / body / color pigments, pearls, natural minerals, organic powders, oils, metallic soaps, surfactants , A humectant, a preservative, a fragrance, and other various additives.

〔Example〕

 Next, the present invention will be described in more detail with reference to examples.

Example 1 A coloring pigment having the composition shown in Table 1 was prepared, and its water resistance and oil resistance were tested. Table 2 shows the results.

(Production method) A The dye is dissolved in ethyl alcohol (or ethyl alcohol containing purified water or the like).

B A and an ethyl alcohol solution of an acrylic polymer compound are uniformly dissolved.

Add powder to CB and mix.

D Heat to evaporate the ethyl alcohol.

(Test method) Water resistance: 1 part of the pigment and 10 parts of purified water were placed in a test tube, shaken 30 times, and the dissolution of the dye into the liquid after 2 hours was observed.

Oil resistance 1: Dye elution was observed in the same manner as in the water resistance test, except that purified water was replaced with liquid paraffin.

Oil resistance 2: Dye elution was observed in the same manner as in the water resistance test, except that glycerin triisooctanoate was used instead of purified water.

(composition) As is clear from these results, all the coloring pigments of the present invention were excellent in water resistance and oil resistance. In addition, a product having excellent color development was obtained, which was not obtained conventionally.

On the other hand, when the acrylic polymer compound was not used as a binder (comparative product), elution of the dye was observed depending on the solubility in water or oil.

Example 2 Cake type Ishiyado: The cake-type eye shadows of the compositions 1 and 2 obtained as described above have no coloring on the skin, have an unprecedented coloration, have no color change such as discoloration, and have a long lasting makeup. And the feeling of use was also good.

Example 3 Ointment type eye shadow: (Composition) No. 1 White petrolatum 13.0% 2 Acetylated lanolin 5.0 3 Isopropyl lanolinate 2.0 4 Microcrystalline rinx 15.0 5 Liquid paraffin 30.0 6 Preservatives qs 7 Antioxidant qs 8 talc 10.0 9 Color pigment (Product 2 of the present invention) 25.0 (Production method) A No. 1 to 7 are heated and dissolved.

Nos. 8 to 9 are added to B A and uniformly dispersed.

Heat fill CB.

The ointment type eye shadow obtained as described above had no staining on the skin, had an unprecedented coloration, had no color change such as color sinking, and had a good feeling in use.

Example 4 Cake-type foundation: (Composition) No. 1 Titanium oxide 10.0% 2 Colloidal kaolin 25.0 3 Talc 33.4 4 Black iron oxide 0.15 Color pigment (Product 2 of the present invention) 5.0 6 Color pigment (Product 3 of the present invention) 10.0 7 Liquid paraffin 10.0 8 Sorbitan sesquioleate 3.5 9 Glycerin 3.0 10 Fragrance appropriate amount 11 Preservative appropriate amount (Production method) A No. 1 to 6 are mixed and ground.

B Nos. 7 to 11 are mixed and dissolved.

C A and B are mixed and press-molded.

The cake-type foundation obtained as described above had no staining on the skin, was excellent in persistence of makeup, and had a good feeling in use.

Example 5 Stasit type lipstick: (Composition) No. 1 Castor oil 45.3% 2 Hexadecyl alcohol 25.0 3 Lanolin 4.0 4 Beeswax (yellow) 5.0 5 Ozokerite 4.0 6 Candelilla wax 7.0 7 Carnauba wax 2.0 8 Antioxidant, preservative qs 9 Titanium oxide 2.0 10 Colored pigment (Product 1 of the present invention) 5.5 11 Colored pigment (Product 10 of the present invention) 0.212 Appropriate amount of flavor (Production method) A No. 1 to 8 are dissolved by heating.

After kneading BA with Nos. 9 to 11, redissolve and add No. 12 to dissolve.

CB is filled into a container and molded.

The stake type lipstick obtained as described above has no coloring on the skin, has an unprecedented coloration, has no color change such as color sinking, has a long lasting makeup, and is used. The feeling was good.

Example 6 Oil-based solvent-type mascara: (Composition) No. 1 Carnauba wax 7.0% 2 Beeswax 2.0 3 Microcrystalline Wax 20.0 4 Lanolin 0.45 Liquid polyisobutylene 60.6 6 Color pigment (Invention 6) 7.0 7 Color pigment (Invention) Product 1) 3.0 8 Preservatives Appropriate amount (Preparation method) A Heat No.1-5 to dissolve.

B No. 6 to 8 are mixed.

C A and B are mixed and dispersed.

Fill the container with DC.

The oil-based solvent-type mascara obtained as described above had no staining on the skin, was excellent in cosmetic persistence, and had a good feeling in use.

Example 7 Solid nearly red: (Composition) No. 1 Talc 60.0% 2 Kaolin 20.0 3 Titanium oxide 4.0 4 Zinc stearate 5.0 5 Rice starch 5.0 6 Color pigment (Product 7 of the present invention) 3.0 7 Fragrance Appropriate amount 8 Flow Pararafin 3.0 (Production method) A No. 1 to 6 are mixed and pulverized.

B Nos. 7 to 8 are mixed and dissolved.

C A and B are mixed and press-molded.

The solid blusher obtained as described above has no dyeing on the skin, has an unprecedented coloration, has no color change such as color sinking, and has excellent makeup persistence. The feeling of use was also good.

〔The invention's effect〕

As described in detail above, the present invention provides a colored pigment having an effect that cannot be obtained by merely using it as a dye by coating the surface of the powder with a dye using an acrylic polymer compound as a binder. Things.

That is, the coloring pigment according to the present invention has the above-described configuration, and the dye is present in a solid solution state in a film of an acrylic polymer compound that is insoluble in water and oil.
In addition, since the film and the powder are firmly bonded, they are excellent in water resistance and oil resistance, and are not dyed to the skin or the like. Thus, according to the present invention, it is possible to pigment a dye that has been difficult to use because it has a conventional dyeing property, and a color pigment excellent in color development that has never been seen before can be obtained. is there. Further, according to the present invention, since the powder used as the base material is not selected, the product does not impair the usability even when blended in cosmetics, has a color development that has never been seen before, and has a good usability. Can be provided.

In addition, the cosmetic of the present invention contains the coloring pigment as described above, does not stain on the skin or the like, has a clear coating color, and has excellent cosmetic persistence. In addition, a product having unprecedented color development can be obtained, and the usability is good.

Claims (2)

(57) [Claims] 1. A colored pigment obtained by coating the surface of a powder with a mixture of a dye and an acrylic polymer compound. 2. A cosmetic comprising the coloring pigment according to claim 1.