Patent ID: 7109251
Filing Date: 2006-09-19
Classification: C08K,C09D,C09J,Y10T

Abstract:
1. An irradiation-curable silicone-based coating composition with a viscosity of less than or equal to 1 500 mPa.s, which comprises: (a) from 50% to 99% by weight of at least one linear, branched and/or cyclic liquid polyorganopolysiloxane polymer Pa with a viscosity of greater than 500 mPa.s and having at least one end unit of the type M of formula (I): in which: the symbols R (i) a linear or branched alkyl radical containing 1 to 8 carbon atoms, optionally substituted with at least one halogen, (ii) an optionally substituted cycloalkyl radical containing between 5 and 8 ring carbon atoms, (iii) an optionally substituted aryl radical containing between 6 and 12 carbon atoms, (iv) an aralkyl portion having an alkyl portion containing between 5 and 14 carbon atoms and an aryl portion containing between 6 and 12 carbon atoms, optionally substituted on the aryl portion with halogens, alkyls and/or alkoxyls containing 1 to 3 carbon atoms, (v) a hydroxyl group OH or an alkoxyl group containing from 1 to 8 carbon atoms, (vi) a hydrogen radical, the symbols Z, which may be identical and/or different, represent: a crosslinkable and/or polymerizable organofunctional group the organofunctional group being linked to the silicon of the polyorganosiloxane via a divalent radical containing from two to twenty carbon atoms and optionally containing at least one hetero atom; (b) from 1% to 50% by weight of at least one linear, branched and/or cyclic liquid polyorganopolysiloxane polymer Pb with a viscosity of less than 150 mPa.s and containing at least one end unit of the type M of formula (I) defined above and/or at least one unit of the type D of formula (II): in which the symbols R (c) and an effective amount of at least one initiator comprising an onium borate.