申请人:KAO CORPORATION
公开号:US10195135B2
公开(公告)日:2019-02-05
The present invention relates to an organopolysiloxane graft polymer including an organopolysiloxane segment as a main chain thereof and an unsaturated monomer-derived copolymer segment containing a repeating unit derived from an unsaturated monomer containing a carboxylic acid or a carboxylic acid salt as a side chain thereof, in which a content of the organopolysiloxane segment in the organopolysiloxane graft polymer is 35 to 59% by mass, a content of the repeating unit derived from the unsaturated monomer containing a carboxylic acid or a carboxylic acid salt in the organopolysiloxane graft polymer is 4 to 17% by mass, and a content of a repeating unit derived from an unsaturated monomer whose homopolymer has a glass transition point of not lower than 150° C. (except for the unsaturated monomer containing a carboxylic acid or a carboxylic acid salt) in the organopolysiloxane graft polymer is not more than 14% by mass, and a number-average molecular weight of the organopolysiloxane segment is not less than 8,000 and not more than 200,000.
本发明涉及一种有机聚硅氧烷接枝聚合物,包括作为主链的有机聚硅氧烷段和作为侧链的不饱和单体衍生共聚物段,其中不饱和单体衍生共聚物段含有从含有羧酸或羧酸盐的不饱和单体衍生的重复单元、其中有机聚硅氧烷接枝聚合物中有机聚硅氧烷段的含量为 35% 至 59%(按质量计),有机聚硅氧烷接枝聚合物中由含有羧酸或羧酸盐的不饱和单体衍生的重复单元的含量为 4% 至 17%(按质量计),以及由不饱和单体衍生的重复单元的含量,其均聚物的玻璃化转变点不低于 150°C。(有机聚硅氧烷接枝聚合物中不饱和单体(含有羧酸或羧酸盐的不饱和单体除外)的含量不超过 14% (以质量计),且有机聚硅氧烷段的数均分子量不低于 8,000 且不超过 200,000。