Patent ID: 6569914
Filing Date: 2003-05-27
Classification: C08F,C09D,Y10T

Abstract:
A silicone release coating composition having a low coefficient of friction (COF) comprisinga) from 0.5 to 20 weight percent of a COF reducing additive comprising a linear or lightly branched organopolysiloxane additive having a viscosity in excess of 400,000 mm2/s and less than 1 functional group on average per molecule which is reactive with one or more of the components of the base composition, wherein the weight percent is based on the total weight of the composition; and b) as a curable silicone base composition, one or more of b)i) a thermocurable, addition-crosslinkable base composition comprising b)i)1) one or both of a crosslinkable, unsaturated hydrocarbon group-containing organopolysiloxane or multiply unsaturated hydrocarbon compound, b)i)2) an Siâ€”H functional organopolysiloxane crosslinker, and b)i)3) a hydrosilylation catalyst; b)ii) a thermocurable, addition crosslinkable base composition comprising one or more unsaturated hydrocarbon-functional organopolysiloxanes and a thermally activated catalyst effective to catalyze the addition reaction between said unsaturated hydrocarbon groups; and/or b)iii) a photocurable, addition crosslinkable base composition comprising one or more unsaturated hydrocarbon-functional organopolysiloxanes and a photo-activated catalyst effective to catalyze the addition reaction between said unsaturated hydrocarbon groups.