Kao Corporation

Nihon Koken Kogyo Kk

Eiichiro Misaki

Hiroyuki Shiomi

Maoya Adachi

Takahiro Kaida

Hiroshi Noro

Shigeaki Fujinami

Takahiro c/o Nihon Koken Kogyo Kk Kaida

Maoya c/o Nihon Koken Kogyo Kk Adachi

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/cmand the intensity of light reflected from the pearl pigment is measured using illuminant C at a 2&#xb0; 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&#xb0; 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.

Pearlescent pigment

The present invention provides a method of producing powder of e.g. a polycarboxylic acid-based copolymer efficiently at a high yield. The method of the present invention comprises forming a sticky thin-film of the polycarboxylic acid-based copolymer or the like on a support, reducing a stickiness of the said thin-film and powdering the said thin-film.

Method of producing powder

Growing community of inventors

Sumida-ku, Japan

Eiichiro Misaki