申请人:——
公开号:US20030130389A1
公开(公告)日:2003-07-10
A curable silicone resin composition comprises (A) an uncured silicone resin having units of the formula (R*)
a
(R)
b
SiO
(4−a−b)/2
, where each R* is a functional group capable of reacting with Si—OH and/or Si-alkoxy groups and each R is a nonfunctional monovalent hydrocarbon group, a+b is from 1.0 to 3.0 and each molecule of uncured silicone resin contains an average of at least two groups R*, and (B) a silanol or hydrolysable compound of the formula (I) where R′ represents a hydroxyl group or a hydrolysable group; each R″ represents hydrogen, a monovalent hydrocarbon which optionally is substituted, or a group within the above definition of R′; and Ar is a substantially nonflexible linkage including at least one para-arylene moiety, so that the groups (R′)
2
R″Si— are spatially separated.
一种可治愈的硅树脂组合物包括(A)未固化的硅树脂,其具有式(R*)a(R)bSiO(4−a−b)/2的单元,其中每个R*是能够与Si—OH和/或Si-烷氧基反应的功能性基团,每个R是非功能性单价碳氢基团,a+b为1.0至3.0,每个未固化的硅树脂分子含有平均至少两个R*基团;以及(B)式(I)的硅醇或可水解化合物,其中R'代表羟基或可水解基团;每个R"代表氢、一价碳氢基团(可选地被取代)或上述R'定义内的基团;Ar是包括至少一个对位芳基单元的实质上非柔性连接,以使得(R')2R"Si—基团在空间上分离。