Strahlenhärtbare Vinyl/Silikon-Trennmittelüberzug

摘要

The invention relates to a radiation curable release coating composition comprising: (a) from about 0.05 to about 25 percent by weight of polymer selected from the group consisting of polymers falling within the general formula: I and mixtures thereof, wherein: X are monovalent moieties having ethylenic unsaturation which can be the same or different; Y are divalent linking groups which can be the same or different; D are monovalent moieties which can be the same or different selected from the group consisting of hydrogen, an alkyl group of 1 to about 10 carbon atoms, aryl, and substituted aryl; R are divalent hydrocarbon groups which can be the same or different; R1 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl; R2 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, aryl, and substituted aryl; R3 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, vinyl, aryl, and substituted aryl; R4 are monovalent moieties which can be the same or different selected from the group consisting of alkyl, substituted alkyl, vinyl, aryl, and substituted aryl; and n is an integer of about 25 to about 750; (b) from about 5 to about 60 percent by weight of one or more free radically polymerizable multifunctional vinyl monomers copolymerizable with said polymer; and (c) from about 25 to about 95 percent by weight of one or more free radically polymerizable monofunctional vinyl monomers copolymerizable with said polymer; wherein said weight percentages are based upon the total weight of the radiation curable release coating composition. The invention also relates to substrates coated with the release coating.