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Pearlescent pigment

A technology of pearlescent pigments and optical film thickness, which is applied in the direction of pigment preparation, inorganic pigment treatment, fibrous fillers, etc., and can solve problems such as not being able to show skin

Inactive Publication Date: 2011-08-10
KAO CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In Japanese Unexamined Publication No. 7-11161 and Japanese Unexamined Publication No. 8-259840, it is proposed to cover a multilayer pearlescent pigment of colorless metal oxides such as titanium oxide on a plate-shaped powder covered with iron oxide, but Only red pearlescent pigments can be obtained, which cannot express bright and attractive skin

Method used

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  • Pearlescent pigment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Add 80 g of flake mica with a particle size of 5-60 μm to 1.2L of water to fully disperse it. After the temperature is raised to 80°C, hydrochloric acid is added to adjust the pH to 3. Next, while keeping the pH at 3 with an aqueous sodium hydroxide solution, 337 g of the pre-prepared iron nitrate aqueous solution (17 parts by mass of iron nitrate: 26 parts by mass of water) was slowly added to make the iron ions 9×10 -4 The ratio of mol / min. After the addition, an aqueous sodium hydroxide solution was added to the mixed solution to adjust the pH to 5. It was filtered, washed with water to remove salt, filtered and dried, and then roasted at 700°C for 1 hour.

[0063] The obtained pearlescent pigment is uniformly covered with very fine iron oxide particles with a geometric film thickness of 20 nm on the flake-shaped mica. In addition, the surface roughness of the covering layer was measured to be 3.44 nm.

[0064] Next, 80 g of the above-mentioned iron oxide-coated pearles...

Embodiment 2

[0066] Except that the iron nitrate aqueous solution (17 parts by mass of iron nitrate: 26 parts by mass of water) was changed from 337 g to 430 g, the same procedure as in Example 1 was carried out to produce iron oxide-coated pearlescent pigments. The obtained pearlescent pigment is uniformly covered with very fine iron oxide particles with a geometric thickness of 30 nm on the flake mica. In addition, the surface roughness of the covering layer was measured to be 4.30 nm.

[0067] Next, except that 240 g of the 40% by mass titanium tetrachloride aqueous solution was added in an amount of 200 g instead of 240 g, the same operation as in Example 1 was carried out to obtain a high chroma golden interference titanium oxide / iron oxide coated pearlescent pigment.

Embodiment 3

[0069] Except that the iron nitrate aqueous solution (17 parts by mass of iron nitrate: 26 parts by mass of water) was changed from 337 g to 544 g, the same procedure as in Example 1 was carried out to produce a pearlescent pigment. The obtained pearlescent pigment is uniformly covered with very fine iron oxide particles with a geometric film thickness of 50 nm on the flake mica. In addition, the surface roughness of the covering layer was measured to be 3.03 nm.

[0070] Next, except for replacing 240 g of the 40% by mass titanium tetrachloride aqueous solution addition amount with 63 g, the same operation as in Example 1 was carried out to obtain a high chroma red interference titanium oxide / iron oxide coated pearlescent pigment.

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Abstract

The present invention relates to a pearl pigment obtained by coating the surface of a flaky powder with a colored metal or a colored metal oxide and further coating the surface of the above colored metal- or colored metal oxide-coated flaky powder with a colorless metal or a colorless metal oxide, wherein when the pearl pigment is applied onto the surface of black artificial leather in an average amount of 0.05 mg / cm<2> and the intensity of light reflected from the pearl pigment is measured using illuminant C at a 2 DEG viewing angle with a spectrophotometric colorimeter which is provided with a sheet polarizer S on the light incident side and a sheet polarizer P on the light receiving side, the powder reflection light which is incident to the pearl pigment as a measurement sample at an angle of 45 DEG to the direction normal to the surface of the sample and is received in the direction normal to the surface of the sample has absolute values a<*> and b<*> of 10 or less, and make-up cosmetics containing the pearl pigment.

Description

Technical field [0001] The present invention relates to a pearlescent pigment, a manufacturing method thereof, and a cosmetic material for makeup containing the pearlescent pigment. Background technique [0002] Various coloring pigments are used in the fields of paint, plastics, printing inks, and cosmetics. In recent years, in order to achieve bright color development and creativity, light interference pearlescent pigments in which titanium oxide, iron oxide, etc. are covered on the surface of flake-like powder have been used. [0003] General pearlescent pigments cover flake-like powders with colorless metal oxides such as titanium oxide and vary the thickness to obtain various interference colors. In order to obtain more vivid interference colors, it is known that materials with different refractive indices can be multilayered, and various methods have been proposed. There are also multilayer structured pearlescent pigments on the market. On the other hand, the use of non-fer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09C3/06A61K8/19A61Q1/02
CPCC09C1/0015C09C1/0021C09C2200/1008C09C2220/106C09D5/36C09D11/037
Inventor 美崎荣一郎盐见浩之足立真央也海田崇宏
Owner KAO CORP