申请人:Dow Corning Asia, Ltd.
公开号:US05502229A1
公开(公告)日:1996-03-26
There is disclosed a diphenylsiloxane oligomer functionalized at both terminals, and methods for the preparation thereof, said oligomer having the following general formula G-(OSi(Ph).sub.2).sub.m O--G wherein Ph denotes a phenyl radical, m is 3 to 50 and G is has a formula independently selected from the group consisting of ##STR1## in which R.sup.1 is independently selected from the group consisting of hydrogen and a monovalent hydrocarbon group having 2 to 8 carbon atoms, said monovalent hydrocarbon group excluding phenyl, tolyl, xylyl, and ethylphenyl radicals, R is independently selected from the group consisting of R.sup.1, methyl radical and phenyl radical, Q is a divalent hydrocarbon group and n is an integer having a value of 1 to 3.
披露了一种在两个末端进行官能化的二苯基硅氧烷寡聚物,以及其制备方法,所述寡聚物具有以下一般式 G-(OSi(Ph).sub.2).sub.m O--G,其中Ph代表苯基,m为3至50,G具有以下独立选择的公式:其中R^1独立选择自氢和具有2至8个碳原子的一价碳氢基团,所述一价碳氢基团不包括苯基、甲苯基、二甲苯基和乙基苯基基团,R独立选择自R^1、甲基基团和苯基,Q是二价碳氢基团,n是一个值为1至3的整数。