SILOXANE BOND FORMATION BY HETEROFUNCTIONAL CONDENSATION OF ALKOXYSILANE AND HALOGENOSILANE - APPLICATION TO THE PREPARATION OF COPOLY(TETRAMETHYL-P-SILPHENYLENESILOXANE-DIMETHYLSILOXANE)

被引：18

作者：

CORRIU, RJP ^{[1
]}

LECLERCQ, D ^{[1
]}

MUTIN, PH ^{[1
]}

SAMSON, H ^{[1
]}

VIOUX, A ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2,CNRS,UMR 44,F-34095 MONTPELLIER 05,FRANCE

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1994年 / 466卷 / 1-2期

关键词：

SILOXANE; POLYMER;

D O I：

10.1016/0022-328X(94)88027-1

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Siloxane linkages are formed non-hydrolytically by the reaction of dihalogenosilanes with either dibenzylether, or dibenzyloxysilanes and dibenzhydryloxysilanes. The heterocondensation reaction is activated in the presence of NaI (in acetonitrile) or fluoride anions. This offers an alternative copolymerization route to the usual dehydrocondensation of SiOH-terminated species. Thus, the title copolymer was prepared by reaction of equimolar amounts of Me(2)Si(OCHPh(2))(2) and 1,4-bis(chlorodimelhylsilyl)benzene at 100 degrees C. The Si-29 NMR spectrum supports a quasi-random sequence in the copolymer. Thermal stability is similar to that reported for an alternating microstructure, as inferred from thermogravimetric analysis.

引用

页码：43 / 50

页数：8

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