公开(公告)号：US20220340713A1

公开(公告)日：2022-10-27

申请号：US17639458

申请日：2019-09-03

Applicant: DOW SILICONES CORPORATION

Inventor： Peng LI ,  Xiaocong XU ,  Hongjun MA ,  Yan ZHENG ,  Shuhua ZHANG ,  Yejun WU ,  Hui ZHU

IPC: C08G77/08 ,  C08G77/18

Abstract: A method for producing an organopolysiloxane having at least one silicon atom-bonded alkoxysilylalkyl group per molecule is provided. The method comprises the following steps: (i) treating an organopolysiloxane having at least one silicon atom-bonded hydrogen atom per molecule with an alkali salt of carboxylic acid; (ii) removing the alkali salt from the organopolysiloxane; and (iii) reacting the organopolysiloxane with an alkenyl group-containing alkoxysilane in the presence of a platinum-based catalyst. The organopolysiloxane is generally obtained by the method without hydrolyzing any alkoxysilylalkyl groups, and is useful as a surface modifier for various types of fillers.