NOVEL PHOTOACTIVATABLE SYSTEM FOR INHIBITING HYDROSILYLATION

摘要

The present invention relates to a hardenable silicone composition including an irradiation-activated system for temporarily inhibiting the hydrosilylation reaction. Said system includes at least one inhibitor selected from among α-acetylenic alcohols, α-α′-acetylenic diesters, conjugated ene-yne compounds, α-acetylenic ketones, acrylonitriles, maleates, fumarates, the mixture thereof, at least one photoinitiator, and tris(trimethylsilyl)silane (TTMSS). The invention also relates to a method for preparing a silicone coating and hard elastomer materials provided comprising said silicone composition.

主权项

1. A curable silicone composition comprising:
A. at least one organopolysiloxane comprising, per molecule, at least two alkenyl radicals bonded to silicon atoms; B. at least one organohydrogenopolysiloxane comprising, per molecule, at least two hydrogen atoms bonded to silicon atoms, and optionally at least three hydrogen atoms bonded to silicon atoms; C. at least one hydrosilylation catalyst; D. at least one inhibitor chosen from α-acetylenic alcohols, α,α′-acetylenic diesters, conjugated ene-yne compounds, α-acetylenic ketones, acrylonitriles, maleates and fumarates, and mixtures thereof, E. at least one photoinitiator, F. tris(trimethylsilyl)silane (TTMSS).