Patent ID: 7109256

Claim:
A surface modified inorganic oxide powder, comprising inorganic oxide particles having a surface modified with a mixed solution comprising an organopoly-siloxane and a silane compound in the presence of an acid or a base; wherein the organopoly-siloxane has the following formula (1): wherein R in formula (1) is each independently a hydrogen or an alkyl group, which alkyl group may be optionally substituted with a vinyl group, a phenyl group, a poly ether group, an epoxy group, or an amino group, X is R or a hydrolysis group selected from the group consisting of a halogen atom, a hydroxyl group and an alkoxy group, and n is an integer of 15 to 500; and wherein the silane compound has one of the following formulas (2), (3), or (4): R 1 SiX 3 (2) R 2 R 3 SiX 2 (3) R 1 R 2 R 3 SiX (4) wherein R 1 in formula (2) is an unsubstituted alkyl group having more than 6 carbons; wherein R 2 and R 3 in formula (3) and R 1 , R 2 , and R 3 in formula (4) are the same or different unsubstituted alkyl groups and at least one of R 1 , R 2 and R 3 has more than 6 carbons; and wherein X is a halogen atom, hydroxyl group or an alkoxy group.