公开(公告)号：US20030212228A1

公开(公告)日：2003-11-13

申请号：US10268540

申请日：2002-10-09

Applicant: DSO National Laboratories

Inventor： Jie Dai ,  Chaoran Deng

IPC: C08G077/00

CPC classification number: C08G77/06 ,  C08G77/04 ,  C08G77/38

Abstract: There is disclosed a three stage method for the preparation of ladder-like silicone polymers. The first stage comprises hydrolysis and polymerization of alkyltrialkoxylsilane-like monomers to give relatively low molecular weight prepolymers. The second stage comprises dehydrated condensation polymerization of the prepolymers to give high molecular weight polymers. The third stage comprises partial blocking of a proportion of the pendant SinullOH (silanol) groups with a pre-determined sub-stoichiometric amount of a blocking agent. Also disclosed are the prepolymers, polymers and partially blocked polymers so produced.

Abstract translation: 公开了制备梯状硅氧烷聚合物的三阶段方法。 第一阶段包括烷基三烷氧基硅烷类单体的水解和聚合，得到相对低分子量的预聚物。 第二阶段包括预聚物的脱水缩聚得到高分子量聚合物。 第三阶段包括用预定的亚化学计算量的封闭剂部分封闭一部分Si-OH（硅烷醇）侧基。 还公开了如此制备的预聚物，聚合物和部分封闭的聚合物。