CAUVIN SEVERINE,VAN ROY BLONDINE,RASSART BENOIT,PETROSINO ALBERTO,HANSSENS SOPHIE
申请号：
IN6670/DELNP/2013
公开号：
IN2013DN06670A
申请日:
2013.07.25
申请国别(地区):
IN
年份:
2015
代理人:
摘要：
The invention relates to a method for the production of silicone in water emulsions by emulsion polymerisation. The emulsion contains particles of an organopolysiloxane polymer having an average particle diameter of less than 1µm. The method comprises: combining a silanol end blocked organosiloxane starting polymer water and a surfactant said starting polymer having a viscosity of at least 2 Pa.s preferably at least 2.5 Pa.s preferably at least 3.5 Pa.s preferably at least 4 Pa.s and up to 150 Pa.s emulsifying the starting polymer by agitating or shearing the ingredients polymerizing the starting polymer to form a longer chain silanol end blocked organopolysiloxane polymer wherein at least a portion of said polymerising step is performed at a temperature of less than or equal to 16 ºC preferably less than or equal to 15 ºC.
