申请人:SHIN-ETSU CHEMICAL CO., LTD.
公开号:US10208138B2
公开(公告)日:2019-02-19
An organosiloxane graft polyvinyl alcohol polymer contains a structural unit shown by the following general formula (1),
wherein M1 and M2 represent a hydrogen atom, an acetyl group, or a siloxane group shown by the following general formula (2), provided that at least one of M1 and M2 is a siloxane group shown by the general formula (2); and A represents a single bond or a linking group,
wherein R1 represents a monovalent organic group having 1 to 6 carbon atoms; R2, R3, and R4 each represent a monovalent organic group having 1 to 6 carbon atoms or a siloxy group shown by —OSiR5R6R7, where R5, R6, and R7 each represent a monovalent organic group having 1 to 6 carbon atoms; “n” represents an integer of 1 to 10; and “a” represents an integer of 0 to 2.
有机硅氧烷接枝聚乙烯醇聚合物含有如下通式(1)所示的结构单元、
其中 M1 和 M2 代表氢原子、乙酰基或下式通式(2)所示的硅氧烷基团,条件是 M1 和 M2 中至少有一个是通式(2)所示的硅氧烷基团;A 代表单键或连接基团、
其中 R1 代表具有 1 至 6 个碳原子的一价有机基团;R2、R3 和 R4 各自代表具有 1 至 6 个碳原子的一价有机基团或由 -OSiR5R6R7 所示的硅氧基,其中 R5、R6 和 R7 各自代表具有 1 至 6 个碳原子的一价有机基团;"n "代表 1 至 10 的整数;"a "代表 0 至 2 的整数。