POLY(CYCLOSILOXANE) COMPOSITION AND SYNTHESIS

A poly(cyclosiloxane) is synthesized by oxidation with water in the presence of a Pt catalyst, followed immediately by polycondensation of the Si-OH groups to form Si-O-Si linkages. Thus, pentamethylcyclopentasiloxane can be polymerized into poly(pentamethycyclopentasiloxane). L'invention conce...

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Bibliographic Details
Main Authors KENNEDY, JOSEPH, KURIAN, PIOUS
Format Patent
LanguageEnglish
French
Published 21.08.2003
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:A poly(cyclosiloxane) is synthesized by oxidation with water in the presence of a Pt catalyst, followed immediately by polycondensation of the Si-OH groups to form Si-O-Si linkages. Thus, pentamethylcyclopentasiloxane can be polymerized into poly(pentamethycyclopentasiloxane). L'invention concerne un poly(cyclosiloxane) synthétisé par oxydation à l'eau en présence d'un catalyseur Pt, suivie immédiatement par une polycondensation des groupes Si-OH afin de former des liaisons Si-O-Si. Ainsi, il est possible de polymériser un pentaméthylcyclopentasiloxane en un poly(pentaméthycyclopentasiloxane).
Bibliography:Application Number: WO2002US32869