Abstract
A variety of mono-, di-, and multifunctional 1-propenyl ether functional siloxanes were readily prepared in high yields by the transition-metal-catalyzed condensation of α-(1-propenyl) ω-vinyl ethers with various linear and cyclic hydrogen functional siloxanes. Under these conditions, hydrosilation takes place regioselectively at the vinyl ether site of the α-(1-propenyl) ω-vinyl ether. Using onium salt photoinitiators, these new monomers and oligomers undergo rapid polymerization under the influence of UV light. To study these very fast photopolymerizations, extensive use of Fourier transform real-time infrared spectroscopy was made. Employing this technique, the effects of monomer and photoinitiator structure on the rates of polymerization were studied.
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