Patent ID: 6437042
Filing Date: 2002-08-20
Classification: C08J,Y10T

Abstract:
A method of making a suspension of crosslinked silicone particles having a mean particle diameter of 0.1-500 &mgr;m comprising forming a condensation crosslinkable silicone composition containing an organopolysiloxane (A) having at least two silanol groups per molecule and a crosslinker (B), but without a condensation catalyst (C); emulsifying the condensation crosslinkable silicone composition (A) and (B) in water using a surfactant; forming an emulsion of a tin (II) salt of an organic acid with no more than ten carbon atoms, in water using a surfactant; adding the tin (II) salt emulsion as the condensation catalyst (C) to the emulsion of the condensation crosslinkable silicone composition (A) and (B), in order to crosslink the condensation crosslinkable silicone composition (A) and (B) resulting in the formation of the suspension of crosslinked silicone particles having a mean particle diameter of 0.1-500 &mgr;m.