CAS: 25898-37-7; P-Tolymethyldichlorosilane

相似化合物

35239-30-6 701-35-9 1631-82-9

专利信息

专利号:US-7951895-B2
优先权日:2005-12-23
标题 :Process for preparing a silicone resin
发明人：RAMDANI KAMEL; BOSSY HELENE; LOMEL SEBASTIEN; DURAND NICOLAS
权利人:BLUESTAR SILICONES FRANCE
摘要:The invention relates to, and the general field of the invention is that of, the synthesis of silicone resins, more particularly the synthesis of silicone resins of type MQ. The process relates to the preparation of MQ silicone resins and permits better control of the operating conditions in the step of the polymerization of a sodium silicate (B) in aqueous medium in the presence of an acid (C) to form a silica hydrosol (polysilicic acid). In the course of the polycondensation step the reactants, a sodium silicate and an acid, are mixed, preferably in continuous fashion, dynamically to form a mixture ( 3 ), by means of at least one intensive mixing tool (M) producing a power ε per unit volume of more than 10 kW/m 3 .