Polyepoxysilanes and radiation-curable polyepoxysilicone composi

Details Polyepoxysilanes and radiation-curable polyepoxysilicone composi Polyepoxysilanes and radiation-curable polyepoxysilicone composi

1992-07-08

1993-11-09

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

522 25, 528 27, C07F 708, C07D30302

Patent

active

052604551

ABSTRACT:
Polyepoxy silane compositions resulting from the reaction of olefinepoxide and poly(H)silanes crosslink in the presence of a catalytic amount of an 'onium catalyst when exposed to UV light. In one embodiment, two moles of an olefin-containing epoxy monomer are reacted with a bis(H)-containing silane of general formula R.sub.2 SiH.sub.2. Important to the success of this process is that RhCl.sub.3.xH.sub.2 O is capable of catalyzing the hydrosilation addition of 2 moles of olefin to R.sub.2 SiH.sub.2. The resulting diepoxysilanes are reactive monomers which undergo photopolymerization when exposed to ultraviolet light in the presence of iodonium photocatalysts.

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