Patent ID: 6462104
Filing Date: 2002-10-08
Classification: C08K

Abstract:
A process for preparing a suspension of a particulate reinforcing filler treated with a compatibilizer (CA), in a silicone material (SM), said suspension being usable in particular to produce silicone compositions which may be vulcanized or cured by polycondensation, wherein said SM comprises at least one linear reactive POS, having chain ends, bearing at each chain end at least two condensable or hydrolyzable groups, or a single hydroxyl group, said process comprising the steps of:1) introducing from 8% to 30% by dry weight, relative to the particulate reinforcing filler, of the compatibilizer (CA) into at least a portion of the SM silicone material, and incorporating the particulate reinforcing filler into at least the portion of the SM silicone material, said introduction being carried out before the incorporation or substantially simultaneously with the incorporation, and 2) introducing further compatibilizer (CA) into at least the portion of the SM.