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Current Trends in Polymer Science   Volumes    Volume 15 
Abstract
Highly efficient method for synthesis of epoxy functional (poly)siloxanes
Hieronim Maciejewski, Izabela Dąbek, Ryszard Fiedorow, Karol Szubert
Pages: 45 - 54
Number of pages: 10
Current Trends in Polymer Science
Volume 15 

Copyright © 2011 Research Trends. All rights reserved

ABSTRACT
 
Epoxy functional siloxanes have many applications which makes the development of a highly efficient method for their synthesis very desirable. Herein, we report syntheses of these compounds based on the hydrosilylation process, in a biphasic reaction setup without the use of solvents that allows separation of the product, recovery and reuse of the catalyst, which is fundamental from the point of view of “green chemistry”. Such a biphasic system was obtained by applying phosphonium ionic liquids which immobilised rhodium complex very well while maintaining its high catalytic activity even after multiple use of the catalyst. The above highly effective and universal method of synthesis enabled to obtain epoxy functional di-, tri-, and polysiloxanes of different content of functional groups with a high selectivity at stoichiometric ratio of reactants. A full characterisation of all products by FT-IR    and 1H, 13C, and 29Si NMR spectroscopic analyses as well as by GPC and refractometric analyses was provided.
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