Patent ID: 7285290

Claim:
A hydrophilized powder, wherein the powder is surface treated with a polyether-modified silicone having a weight average molecular weight of from 300 to 100,000 and a hydrolyzable silyl group according to the formula R 1 a R 2 b R 3 c SiO (4-a-b-c)/2 wherein 0.5≦a≦2.5, 0.1≦b≦1.0, and 0.01≦c≦1.0 and R 1 may be same with or different from each other and is an organic group selected from the group consisting of C 1-30 alkyl groups, aryl groups, aralkyl groups, and fluorinated alkyl groups, R 2 is a polyether group according to the following formula —C d H 2d —O—(C 2 H 4 O) e R 4 wherein R 4 is a C 1-30 alkyl group and d and e are integers with 0≦d≦15 and 1≦e≦50, a content of the polyether moiety (C 2 H 4 O) e ranging from 50 to 80 weight-% relative to the weight of the polyether-modified silicone, and R 3 is a silyl group having a hydrolyzable group according to the formula —C d H 2d SiR 1 g (OR 5 ) 3-g wherein R 1 is as defined above, R 5 is a hydrogen atom or a C 1-6 alkyl group, d is as defined above, and 0≦g≦2.