| 摘要 |
The present invention relates to a silicone-based copolymer resin powder. The silicone-based copolymer resin powder is prepared by reacting a siloxane oligomer obtained from ring-opening of a cyclic organosiloxane in the presence of an acid catalyst and an anionic surfactant with a silane coupling agent having an alkoxy group and a polymerizable double bond to obtain an organopolysiloxane containing at least two silicon-bonded hydroxyl groups per molecule, copolymerizing the organopolysiloxane with an ethylenically unsaturated monomer to form a copolymer as a core, and further polymerizing to another ethylenically unsaturated monomer as a shell, the silicone-based copolymer resin powder containing up to 0.3% by weight of the cyclic organosiloxane and up to 1% by weight of the anionic surfactant. The powder of the present invention can provide sliding property, soft tactile sensation, and waterproof by mixing with a hair cosmetic, makeup cosmetic, sun screen, etc. |
