申请人:Shin-Etsu Chemical Co., LTD.
公开号:US20140213809A1
公开(公告)日:2014-07-31
A method for preparing a polyorganosiloxane represented by the following general formula (1): (R
3
SiO
1/2
)
l
(R
2
SiO
2/2
)
m
(RSiO
3/2
)
n
(SiO
4/2
)
o
(1) wherein the method includes a step of condensation reacting at least one organic silicon compound having at least one hydrogen atom and at least one —OX′ group in the molecule, wherein X′ is a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or an alkoxyalkyl group having 2 to 10 carbon atoms, in the presence of a catalyst, wherein the catalyst is at least one selected from the group consisting of hydroxides of elements in Group 2 of the periodic table, hydrates of hydroxides of elements in Group 2 of the periodic table, oxides of elements in Group 2 of the periodic table, and hydroxides and oxides of metal elements in Groups 3-15 of the periodic table.
制备一种由下列一般式(1)表示的聚有机硅氧烷的方法:(R3SiO1/2)l(R2SiO2/2)m(RSiO3/2)n(SiO4/2)o(1),其中该方法包括在催化剂存在下,通过缩聚反应至少一种有机硅化合物,该有机硅化合物在分子中至少具有一个氢原子和至少一个—OX′基团,其中X′是氢原子、具有1至10个碳原子的烷基基团或具有2至10个碳原子的烷氧基烷基基团。催化剂至少选自周期表第2族元素的氢氧化物、周期表第2族元素的氢氧化物的水合物、周期表第2族元素的氧化物,以及周期表第3-15族金属元素的氢氧化物和氧化物。