JPH0454110A - Color pigment and cosmetic containing the same pigment - Google Patents

Abstract

PURPOSE:To obtain yellow-based color pigment excellent in coloring properties, oil resistance, stability and safety, by at least partially coating the surface of powder with riboflavin butyrate and a resin and to obtain a cosmetic, especially makeup cosmetic, containing the color pigment. CONSTITUTION:The surface of powder comprising inorganic white pigment such as preferably talc, kaolin or mica, inorganic color pigment such as yellow iron oxide, organic powder such as nylon powder or cosmetic powder of pearl agent such as titanium mica, especially inorganic white powder is at least partially coated with riboflavin butyrate and a resin such as nitrocellulose, alkyd resin and/or acrylic resin capable of forming a water-resistant and oil resistant coating film by uniformly blending the powder with riboflavin in a solvent, removing the solvent and coating with the resin to give yellow-based color pigment having the above-mentioned effect and a cosmetic usable around mucosa of the eye.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a yellow colored pigment with high color development, oil resistance, stability and safety, and cosmetics containing the same.

[Conventional technology]

BACKGROUND ART Cosmetics, especially makeup cosmetics, have conventionally contained various coloring pigments as colorants.

Tar-based pigments and inorganic pigments are commonly used as coloring pigments.

[Problem to be solved by the invention]

However, although tar-based pigments have good coloring properties and are available in a wide range of colors, they do not have sufficient oil resistance or stability, and due to safety reasons, they cannot be used in cosmetics used around the eye mucous membranes. There were drawbacks.

On the other hand, although inorganic pigments are excellent in oil resistance, stability, and safety, they have the disadvantage that they are insufficient in color tone. In particular, there was no inorganic pigment that had a yellowish tone with high chroma.

Therefore, it has been desired to develop a yellow pigment with good oil resistance, stability, safety, and color development.

[Means to solve the problem]

Under these circumstances, as a result of intensive study, the inventors found that
If the surface of the powder is coated with a yellow fluorescent vitamin, a derivative of riboflavin butyrate, and a resin, a pigment with good oil resistance, stability, safety, and color development can be obtained. The present invention was completed based on the discovery that it is possible to obtain a cosmetic with excellent color development, long-lasting makeup, and good feeling of use.

That is, the present invention provides a colored pigment characterized in that at least a part of the powder surface is coated with riboflavin butyrate and a resin, and a cosmetic characterized in that it contains the colored pigment. be.

The powder used in the colored pigment of the present invention is not particularly limited, but powder for cosmetics, such as talc, kaolin,
Inorganic white pigments such as mica, magnesium carbonate, calcium carbonate, magnesium silicate, magnesium aluminum silicate, silica, titanium oxide, zinc oxide, aluminum oxide; inorganic colored pigments such as yellow iron oxide; nylon powder, polyethylene powder, Organic powders such as styrene powder, polytetrafluoroethylene powder, silk powder, crystalline cellulose, and N-lauroyl-thi-lysine; pearl agents such as titanium mica, titanium iron mica oxide, and bismuth oxychloride are preferred. Among these, inorganic white pigments are particularly preferred. One or more of these powders may be selected and used depending on the purpose of use, such as cosmetics.

The riboflavin butyrate used in the present invention is a butyrate of riboflavin (vitamin B2) and has yellow fluorescence. Riboflavin butyrate is the yellow fluorescent color source in the colored pigments of the present invention. Therefore, if a body or white powder is used as the powder, the colored pigment of the present invention will be yellow, and if a colored powder is used, the color will be a mixture of yellow and the powder.

The resin used in the present invention is not particularly limited as long as it can be uniformly mixed with riboflavin butyrate in a solvent and form a water- and oil-resistant film after removing the solvent, but examples include nitrocellulose. , alkyd resin, acrylic resin, etc. Further, these resins can be used alone or in combination of two or more.

The colored pigment of the present invention can be produced by, for example, dissolving riboflavin butyrate and a resin in a suitable solvent, mixing this with powder or spraying it on the powder, and then removing the solvent and pulverizing the resulting aggregate. Manufactured by Here, the solvent is not particularly limited as long as it dissolves the resin and riboflavin butyrate, and examples thereof include organic solvents such as ethyl acetate, butyl acetate, toluene, ethanol, xylene, and chlorofluorocarbons. There are no particular restrictions on the amount of raw materials used in carrying out this method, but if the concentration of riboflavin butyrate is too low, the color development will not be sufficient, and if it is too high, problems will arise with oil resistance and stability.
Using 1/100 to 1 part by weight of riboflavin butyric acid ester to 1 part by weight of the resin, and lO to 1 part by weight for the entire
It is preferable to use the powder in an amount of 1 to 100 parts by weight per 1 part by weight of riboflavin acetic acid ester. Also, the removal of the solvent is preferably carried out under reduced pressure for 50 min.
This is done by heating to about 80°C.

The colored pigment thus obtained has a yellow color and can be incorporated into various cosmetics that desire such coloring. In the colored pigment of the present invention, the entire powder surface does not need to be coated with the riboflavin butyrate and the resin, but only a part of the powder surface should be coated. Furthermore, the colored pigment of the present invention may be further subjected to surface treatments commonly applied to powders for cosmetics, such as silicon treatment and metal soap treatment.

Cosmetics that can be blended with the colored pigments of the present invention may be powdered, pressed, liquid, or stick, regardless of the product form or shape. Examples include eye shadow, lipstick, eyeliner, mascara, eyebrow, granular facial cleanser, etc.

The amount of the coloring pigment of the present invention added to cosmetics depends on the type of product and
Although not particularly limited depending on the form etc., it is preferably within the range of 1 to 99% by weight.

When blending the colored pigment, a colored pigment obtained by coating a single powder may be blended into the cosmetic, or the entire powder system of the cosmetic may be coated.

In addition to the coloring pigments mentioned above, the cosmetics of the present invention include other ingredients normally used in cosmetics, such as normal white, body, and coloring pigments, pearl agents, organic powders, oils, metal soaps, surfactants, and moisturizers. They can be appropriately selected and blended from agents, alcohols, pH adjusters, preservatives, antioxidants, ultraviolet absorbers, water-soluble polymers, chelating agents, cosmetic ingredients, fragrances, and additives based on their lot numbers.

〔Example〕

EXAMPLES Next, the present invention will be explained in more detail with reference to Examples, but these are not intended to limit the present invention in any way.

Test Example Colored pigments having the compositions shown in Table 1 were prepared and tested for color development, oil resistance, dyeability and stability.

In addition, in the test, 87 parts by weight of color pigment, 5.0 parts by weight of isopropyl myristate, and 8 parts by weight of liquid paraffin were added.
．． A sample prepared by adding 0 parts by weight was used.

Production method of colored pigment> Riboflavin butyrate and resin are mixed with 100% ethyl acetate.
Dissolve in parts by weight, add powder to this and mix. Next, this is heated to 70° C. under reduced pressure to volatilize ethyl acetate, and then pulverized.

Note that yellow No. 4 aluminum lake was mixed with mica and then ground.

Test Method> (1) Chromogenicity Munsell chroma was measured using a Nihon Heavy Color Difference Meter SZ-Σ80.

(2) 1 part of the sample and 10 parts of isopropyl myristate were placed in an oil-resistant test tube, shaken 30 times, and allowed to stand for 2 hours, after which the transmittance at 400 nm of the supernatant was measured.

(3) Dyeability The sample was applied to the skin, and after half a day, it was wiped off and the dyeability of the pigment to the skin was observed.

(4) Stability Samples were press-molded and the state of bleeding was observed after one month at 50°C.

(5) Safety It was evaluated whether the colored pigments of Example 1.2 and Comparative Examples 1 to 3 could be used on the ocular mucosa.

<result> The results are shown in Table 1.

Example 1 Eyeshadow (heavy 1B) 1, talc 34.92, kaolin 153, magnesium carbonate 14, zinc stearate
105, titanium oxide
56, mica 157, riboflavin butyrate 0.98, alkyd resin 2.89, ultramarine blue
310, mica titanium
711, sorbitan sesquiolate
112, Liquid paraffin 413, Lanolin 114, Preservative
Appropriate amount (manufacturing method) ANα7.8 is dissolved in 60 parts by weight of ethyl acetate, and Nα1 to 6 are added thereto and mixed.

BA is heated to evaporate and evaporate ethyl acetate.

Add Nα9.10 to CB and mix and grind.

D After heating and dissolving Nn11 to 14, add C and mix,
Press mold to obtain eyeshadow.

The eye shadow obtained as described above does not stain the skin, has unprecedented color development, does not cause color bleeding or other color changes, and has good makeup durability and usability. there were.

Example 2 Foundation Micariboflavin butyrate ester alkyd resin Titanium oxide colloidal kaolin talc Black iron oxide Red iron oxide Yellow iron oxide Liquid paraffin Sorbitan sesquiolate (parts by weight) 8.2 0.3 1.5 33.4 0.6 1.5 3 .5 12, glycerin 313, fragrance appropriate amount 14, preservative
Appropriate amount (manufacturing method) ANα2.3 is dissolved in 30 parts by weight of ethanol, and Nα1 is added thereto and mixed.

BA is heated to evaporate and evaporate ethanol.

Add Nα4 to 9 to CB and mix and pulverize.

D After heating and dissolving Nn11 to 14, add C and mix,
Press mold to obtain foundation.

The foundation obtained as described above did not stain the skin, had good makeup persistence, and had good feel on use.

Example 3 Lipstick 1, talc 2, riboflavin butyrate 3, nitrocellulose 4, castor oil 5, hexadecyl alcohol (parts by weight) 0.2 1.5 6, lanolin 47, beeswax 58, oshikelite
49, Candelilla Row
710, Carnauba Row
211, Antioxidant appropriate amount 12,
Preservatives Appropriate amount 13°Fragrance
Appropriate amount 14, titanium oxide
215, red No. 226
1 (Production method) ANcL2.3 is dissolved in 40 parts by weight of xylene, and N(L1) is added thereto and mixed.

BA is heated to evaporate and evaporate xylene, and then pulverized.

Heat and dissolve Nα4-12.

After kneading B and Nα14.15 in DC, redissolve it,
Add k13 and defoam.

A lipstick is obtained by filling and molding the ED into a container.

The lipstick obtained as described above does not stain the skin,
It had unprecedented color development, was free of color changes such as color bleeding, and had good makeup durability and usability.

Example 4 Mascara (parts by weight) 1, mica 2.52, talc 23, riboflavin butyrate 0.14, nitrocellulose
0.45, carnauba wax
76, beeswax 27,
Microcrystalline wax 208 lanolin
0.49, fluid polyisobutylene 60,610, red iron
211, black iron oxide
212, preservatives
Appropriate amount (manufacturing method) Dissolve AN (L3.4) in 70 parts by weight of toluene, add Nα1.2 to this, and mix.

BA is heated to evaporate and evaporate toluene.

CNα5-9 and 12 are heated and dissolved.

Add N[Llo, 11 to DB and mix and grind.

EC and D were mixed and dispersed and filled into a container to obtain mascara.

The mascara obtained as described above did not stain the skin and had good makeup durability and feel when used.

Example 5 Red mica titanium riboflavin butyrate ester acrylic resin talcum kaolin oxide titanium zinc stearate rice starch Red No. 202 liquid paraffin (weight 8) 0.5 3.5 52.2 0.8 11, fragrance appropriate amount (manufacturing method) ANα2.3 is dissolved in 11,350 parts by weight of Freon, and this is added to Nα1 and mixed.

BA is heated to evaporate and evaporate Freon 113.

Add Nα4 to 9 to CB and mix and pulverize.

Mix and dissolve DNα10.11.

EC and D were mixed and press-molded to obtain red bean paste.

The cheek beni obtained as described above does not stain the skin, has unprecedented coloring properties, does not cause color bleeding or other color changes, and has good makeup durability and usability. there were.

〔Effect of the invention〕

According to the present invention, a yellow colored pigment with excellent color development, oil resistance, stability, and safety can be obtained, and by using this, it is possible to provide a cosmetic that can be used around the mucous membrane of the eye, etc. .

Written amendment to the above procedures (voluntary) Patent Application No. 165447 of 1990 2, Title of the invention 4, Attorney dated June 17, 1991 6, "Detailed description of the invention" column 7 of the specification subject to amendment, Contents of amendment (1) In the specification, page 7, lines 15 to 20, "Riboflavin butyric acid...pulverized" was replaced with "Test Example 1.2 ANα4.5 was dissolved in 100 parts by weight of ethyl acetate." Then, add Nα1 to Nα3 and mix.

BA is heated to 70° C. under reduced pressure to volatilize the ethyl acetate.

CB is ground to obtain colored pigments.

Comparative example I A colored pigment is obtained by mixing and pulverizing ANα1.4.

Comparative Example 2 A No. 4 was dissolved in 100 parts by weight of ethyl acetate, and Nα1 was added thereto and mixed.

BA is heated to 70° C. under reduced pressure to volatilize the ethyl acetate.

CB is ground to obtain colored pigments.

Comparative Example 3 A colored pigment is obtained by mixing and pulverizing ANα1.6. ” he corrected.

(2) Page 8, line 8 It says r400nmJ. Corrected to r440nmJ.

Claims (1)

[Scope of Claims] 1. A colored pigment characterized in that at least a part of the powder surface is coated with riboflavin butyrate and a resin. 2. A cosmetic containing the colored pigment according to claim 1.