JPH0730263B2 - Colored powder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a colored powder which prevents color separation from other components during production, storage and transportation, segregation, color spots, etc. Particularly, it relates to a colored powder which is suitable for use in cosmetics.

(Prior Art) Conventionally, for example, as a colored powder for preventing color segregation, segregation, color spots, etc. of cosmetics over time, Japanese Patent Application Laid-Open No. 59-1283.
As disclosed in Japanese Unexamined Patent Publication No. 22 (1999), an organic and / or inorganic powder and an inorganic oxide and / or an inorganic hydroxide different from the powder are mixed and ground in water or a water-containing organic solvent system, It is known that an inorganic oxide and / or an inorganic hydroxide is adsorbed on the surface of an inorganic powder and / or an inorganic powder.

(Problems to be Solved by the Invention) However, in the colored processed powder described in JP-A-59-128322, a strong mixing and grinding force was applied to the colored processed powder at the time of manufacturing a cosmetic. In this case, the inorganic oxide and / or the inorganic hydroxide may be detached because they are simply adsorbed on the surface of the organic and / or inorganic powder. Due to the difference in specific gravity and the difference in particle size between the hydroxide and the organic and / or inorganic powder, the sedimentation time, fluidity, etc. are different, and as a result, the above-mentioned color separation during manufacturing, storage and transportation However, there were problems such as segregation and color spots.

It is an object of the present invention to provide a colored powder which has solved such problems as color separation, segregation, and color spots during manufacturing, storage, and transportation.

(Means for Solving Problems) In the present invention, after a pigment is electrostatically adsorbed on the surface of a resin powder by a mixing and grinding force, a mechanical impact force is further applied to adsorb the pigment to the resin powder. The main point is the colored powder that has been driven into the body.

Hereinafter, the present invention will be described in detail.

The colored powder of the present invention is obtained by electrostatically adsorbing the pigment on the surface of the resin powder by the mixing and grinding force, and then further applying mechanical impact force to drive the adsorbed pigment into the resin powder. In order to electrostatically adsorb the pigment on the surface of the resin powder, it is sufficient to dry-mix and grind the above-mentioned substances. For example, an automatic mortar, a ball mill, a jet mill or the like can be preferably used. In order to drive the pigment adsorbed by mechanical impact into the resin powder, it may be treated with an impact crusher having an impact force. For example, Hybridizer (trade name,
(Manufactured by Nara Machinery Co., Ltd.) can be preferably used.

The resin powder used in the present invention may be nylon, polyethylene, polystyrene, polymethylmethacrylate, silicone resin or the like, and of course one or more of the above substances may be mixed and used. When used as a cosmetic, it is preferable to use a powder having an average particle diameter of 50 μm or less. This is because the skin feels bad when applied to the skin.

Although various known pigments can be used, for example, for cosmetics, red 226, red 202, red 225
No., Red No. 228, Red No. 220, Daidai No. 203, Green 202
Organic pigments such as No., Green No. 201, Purple No. 201, Red No. 221, Blue No. 204, Red No. 404, Red No. 405, Daidai No. 401, Yellow No. 401, Yellow No. 405, Blue No. 403, Blue No. 404, etc. , Titanium oxide, red iron oxide, black iron oxide, ultramarine blue, navy blue, chromium hydroxide, chromium oxide, carbon black, yellow iron oxide, zinc oxide, etc., it is preferable to use one or a mixture of two or more inorganic pigments, When used in cosmetics, the amount used is preferably 0.5 to 100 parts by weight with respect to 100 parts by weight of the resin powder, and the average particle size is preferably 1/5 or less of the resin powder.

(Function) Since the colored powder according to the present invention has a pigment impregnated into a resin powder, when it is used as a cosmetic, the pigment does not separate from the powder even when a strong mixing and grinding force is applied during its production. As a result, problems such as color separation, segregation, and color spots do not occur during manufacturing, storage, and transportation.

(Examples) Hereinafter, examples and application examples used for cosmetics will be described in detail. In each example, "part" means "part by weight"
Shall be indicated.

Example 1 SP-500 (nylon resin powder, average particle size 4 μm, Ltd.)
Toray) 70 parts Red transparent iron oxide (Bengala, Toshiro Pigment Co., Ltd.)
6 parts P-25 (titanium oxide, manufactured by Degussa) 24 parts The above components were mixed in an automatic mortar for 2 hours and then treated for 5 minutes with the above hybridizer to obtain a skin-colored colored powder.

Example 2 SF-H-20 (polyethylene resin powder, average particle size 11.9μ)
m, manufactured by Iron and Steel Chemical Co., Ltd. 50 parts Red No. 226 (manufactured by Toshi Pigment Co., Ltd.) 2 parts Dark blue 5 parts Put the above components together with a 500 ml magnetic ball in a magnetic pot with a capacity of 1000 ml and mix for 3 hours. The mixture was treated with a hybridizer for 5 minutes to obtain a purple colored processed powder.

Example 3 PB-3002 (polystyrene resin powder, average particle diameter 30 μm, manufactured by Sumitomo Chemical Co., Ltd.) 70 parts Iron black (manufactured by Toshi Pigment Co., Ltd.) 30 parts The above components were mixed for 1 hour in an automatic mortar. After that, a treatment with the above hybridizer was performed for 3 minutes to obtain a black colored processed powder.

Example 4 MP-1000 (polymethylmethacrylate, average particle size 0.4
μm, manufactured by Soken Chemical Co., Ltd. 75.0 parts P-25 (titanium oxide) 24.3 parts Red No. 226 (manufactured by Daito Kasei Co., Ltd.) 0.2 parts Transparent red iron oxide 0.5 parts A colored processed powder was obtained.

As a result of observing the colored powders obtained in Examples 1 to 4 with an electron microscope, it was confirmed that the resin powder was impregnated with the pigment.

Application Example 1 (Cosmetic-Foundation) Colored powder of Example 1 30 parts Kaolin 20 parts Sorbitan monooleate 1.5 parts Carnauba wax 4 parts Liquid paraffin 44.5 parts Sorbitan monooleate, carnauba wax and liquid paraffin After heating and dissolving, the colored powder of Example 1 and kaolin were added and mixed with stirring to obtain a foundation.

Application Example 2 (Cosmetic-Eyeshadow) Colored powder of Example 2 50 parts Vaseline 5 parts Sorbitan sesquioleate 1 part Kaolin 10 parts Liquid paraffin 34 parts In the above components, the colored powder of Example 2 is excluded. After all the components were heated and dissolved, the colored powder of Example 2 was added, mixed with stirring, and cast into a mold to obtain a purple eye shadow.

Application Example 3 (Cosmetic-Eyeliner) Colored powder of Example 3 15 parts Beeswax 6 parts Microcrystalline wax 7 parts Dextrin fatty acid ester 3 parts Talc 6 parts Sodium dehydroacetate 0.5 parts Ion-exchanged water 62.5 parts Sodium dehydroacetate, The above components except ion-exchanged water were heated and mixed by stirring to make them uniform, then sodium dehydroacetate was dissolved in water, and the heated mixture was added and mixed by stirring to obtain a black eyeliner liquid.

Application Example 4 (Cosmetic-Bluish) Colored powder of Example 4 94.7 parts Squalane 2 parts Isopropyl myristate 3 parts Paraoxybenzoic acid ester (manufactured by Ueno Pharmaceutical Co., Ltd.) 0.3
Part A product obtained by heating and dissolving the above-mentioned components other than the colored powder of Example 4 was added to the colored powder, stirred and mixed to obtain a uniform product, which was then obtained.

Application Example 5 (Cosmetic-Eyeliner) Colored powder of Example 2 15 parts Johncryl J-62 (34% solution of methylstyrene-acrylic acid copolymer, manufactured by Johnson Co.) 25 parts Peptide PA-100 (Polypeptide, manufactured by Nippi Corporation)
3 parts Newside SC (sodium dehydroacetate, manufactured by Nippon Gosei Co., Ltd.) 0.5 part Nikkor NP-10 (polyoxyethylene nonylphenyl ether, manufactured by Nikko Chemicals Co., Ltd.) 0.1 part Poval PVA-105 (polyvinyl alcohol, (stock) ) Kuraray) 6 parts Glycerin 7 parts Purified water 43.4 parts Of the above components, the colored powder of Example 2, Jonkryl J-62, and 20 parts of purified water are magnetic ball mills with a capacity of 300 ml containing 100 ml of balls for magnetic ball mills. After putting in a pot and mixing and stirring for 3 hours, a solution in which the remaining components were uniformly dissolved was added, and further mixed and stirred for 3 hours to obtain a purple eyeliner solution.

Comparative Example 1 (Production of Colored Powder) The components of Example 1 were mixed in an automatic mortar for 2 hours to obtain a skin-colored powder.

(Manufacture of Foundation) A solid foundation was obtained in the same manner as in Application Example 1 except that the colored processed powder was added instead of the colored processed powder in Application Example 1.

Comparative Example 2 Instead of the colored powder of Application Example 2, SF-H-20 (polyethylene resin powder) 43.9 parts, Red No. 226 1.8 parts, navy blue 4.3
A blank eye shadow was obtained in the same manner as in Application Example 2 except that parts were added.

Comparative Example 3 An eyeliner was obtained in the same manner as in Application Example 3 except that 10.5 parts of PB-3002 (polystyrene resin powder) was added instead of the colored powder of Application Example 3.

Comparative Example 4 (Production of colored processed powder) The components of Example 4 were mixed in an automatic mortar for 2 hours to obtain a red colored processed powder.

(Manufacture of cheeks) The above colored powder 9 was used instead of the colored powder of Application Example 9
Peeled crimson was obtained in the same manner as in Application Example 4 except that 4.7 parts were added.

Comparative Example 5 (Production of Colored Powder) The components of Example 2 were put into a magnetic pot having a capacity of 1000 ml together with 500 ml of magnetic balls and mixed for 3 hours to obtain a purple colored powder.

(Manufacture of eyeliner) Instead of the colored powder of Application Example 5, the colored powder 15 is used.
An eyeliner liquid was obtained in the same manner as in Application Example 5 except that the parts were added.

(Effects of the Invention) The results of tests conducted on the cosmetics obtained in Application Examples 1 to 5 and Comparative Examples 1 to 5 of the cosmetics based on Examples 1 to 4 are shown in the table.

Color separation test: The cosmetics were placed in a glass settling tube, allowed to stand for 3 months, and visually evaluated.

Segregation and color spot test: The appearance of the cosmetics after molding was visually judged.

Evaluation Criteria ○: Good Δ: Slightly defective ×: Poor As described above in detail, the colored powder according to the present invention has problems such as color separation, segregation, and color spots when used as a cosmetic. Not an excellent one.

Claims (1)

[Claims] 1. A colored processed powder in which a pigment is electrostatically adsorbed on the surface of a resin powder by a mixing and grinding force and then mechanically impacted to drive the adsorbed pigment into the resin powder.