Miyoshi Kasel, Inc.

Miyoshi Kasei, Inc.

Mitunari Saito

Masaharu Suzuki

Kazuo Sato

Hirofumi Ijiri

Shinya Kuwazuru

Provided is a surface-treated powder, in which a powder is treated with a surface-treating agent composed of a mixture A+B including A: an alkyl alkoxy silane of a general formula (1): (CH)Si(OCH)and B: one kind of a compound or two or more kinds of compounds selected from a reactive organo silicone of the following general formula (2): (RSiO)(RSiO)(SiR) and a C12 to C22 saturated or unsaturated branched fatty acid. In the general formula (1), n is an integer of 1 to 18, m is an integer of 1 to 3, a, b represent an integer of 1 to 3, and a+b=4. In the general formula (2), Rs mutually independently represents a lower alkyl group having 1 to 4 carbon atoms or a hydrogen atom or a hydrogen atom, respectively, Ris any of an amino group, a hydrogen atom, a hydroxyl group and a C1-C4 lower alkoxy group, and p is an integer of 1 to 300.

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Saitama, Japan

Mitunari Saito