Patent ID: 8591925

Claim:
A surface-treated powder, comprising a powder treated with a surface-treating agent composed of a mixture (A+B) between (A) an alkyl alkoxy silane expressed by the following general formula (1) and (B) one compound or two or more compounds selected from a reactive organo silicone expressed by the following general formula (2) and a saturated or unsaturated branched fatty acid having 12 to 22 carbon atoms or a salt form thereof; (C n H 2n+1 ) a Si(OC m H 2m+1 ) b (1) wherein n denotes an integer of 1 to 18, m denotes an integer of 1 to 3, a and b independently denote an integer of 1 to 3, and a+b=4; (R 1 3 SiO)(R 1 2 SiO) p (SiR 2 3 ) (2) wherein each R 1 , which are all mutually independent, denotes a lower alkyl group having 1 to 4 carbon atoms or a hydrogen atom, respectively, R 2 denotes any of an amino group, a hydrogen atom, a hydroxyl group and a lower alkoxy group having 1 to 4 carbon atoms, and p is an integer of 1 to 300.