METHOD FOR PREPARING A POLYORGANOSILOXANE AND A POLYORGANOSILOXANE
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.
[EN] COMPOSITION AND METHOD OF PREPARING HYDROSILYLATION REACTION PRODUCT<br/>[FR] COMPOSITION ET PROCÉDÉ DE PRÉPARATION D'UN PRODUIT DE RÉACTION D'HYDROSILYLATION
申请人:DOW SILICONES CORP
公开号:WO2018217998A1
公开(公告)日:2018-11-29
A composition is disclosed. The composition comprises: (A) an unsaturated compound including at least one aliphatically unsaturated group per molecule, subject to at least one of the following two provisos: (1) the (A) unsaturated compound also includes at least one silicon-bonded hydrogen atom per molecule; and/or (2) the composition further comprises (B) a silicon hydride compound including at least one silicon-bonded hydrogen atom per molecule. The composition further comprises (C) a hydrosilylation catalyst having a specific structure. A method of preparing a hydrosilylation reaction product is also disclosed.
作者:V. G. Lakhtin、V. L. Ryabkov、M. V. Polyakova、V. M. Nosova、A. F. Kisin、E. A. Chernyshev
DOI:10.1007/bf00698510
日期:1995.4
ofC-chlorovinylmethylchlorosilanes with various alcohols and acetone oxime were investigated. A series of newC-chlorovinylmethylalkoxy- and -isopropylideneiminoxysilanes was characterized by IR and1HNMRspectra. The effect of the number of chlorine atoms inC-chlorovinylmethylchlorosilanes on their reactivity in these reactions was determined.
values Two mechanisms can explain the nature of the products obtained on the co-thermolysis of the cyclic compounds with phenol, one with 1-silacyclobut-1-ene intermediate and the other involving an allylic silicenium cation. In both hypothetical mechanisms, the 2-silabutadienes behave as a conjugated system since they lead either to (2+2) cycloaddition or to (1,2)- and (1,4)-electrophilic addition. This