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Polyarylsiloxanes

المؤلف:  A. Ravve

المصدر:  Principles of Polymer Chemistry

الجزء والصفحة:  499

2026-02-12

432

Polyarylsiloxanes

Many different polyarylsiloxanes were reported in the literature. Only a few of them are in general industrial use at present, though many exhibit interesting physical properties and might be used in the future. Preparation of one such material [164] starts with a reaction of aniline with dichlorosilane in the presence of an HCl scavenger:

The product, dianilinosilane, is reacted with diphenols, like hydroquinone:

Polymers prepared by the above procedure have molecular weights up to 80,000 [164]. It is also possible to start with diphenoxysiloxane and catalyze the reaction with sodium or lithium metals. Reactions of cyclic silazanes with arylene disalanols yield polymers with molecular weights as high as 900,000 [164]: