Patent ID: 6956096

Claim:
A crosslinkable silicone coating composition with reduced aerosol formation, comprising (A) organosilicon compounds having radicals containing aliphatic carbon-carbon multiple bonds comprising a linear organopolysiloxane of the formula (V), R 6 g R 5 3-g SiO(SiR 5 2 O) y (SiR 5 R 6 O) w SiR 5 3-g R 6 g (V) where R 5 is a monovalent, optionally substituted hydrocarbon radical having from 1 to 18 carbon atoms per radical and free from aliphatic carbon-carbon multiple bonds, R 6 is a monovalent hydrocarbon radical having from 2 to 8 carbon atoms per radical and containing a terminal aliphatic carbon-carbon multiple bond, g is 0, 1 or 2, v is 0 or an integer from 1 to 1500, and w is 0 or an integer from 1 to 200, with the proviso that on average at least 1.5 radicals R 6 are present, wherein the units —(SiR 5 2 O)— and —(SiR 5 R 6 O)— may be distributed in any manner within said linear organopolysiloxane, (B) organosilicon compounds containing Si-bonded hydrogen atoms, (C) at least one hydrosilylation catalyst, (D) optionally, inhibitors, and (X) from 0.5 to 10.0 weight percent, based on the total weight of said crosslinkable coating composition, of an antimisting additive prepared by reacting, in a first step a compound (1) containing at least three aliphatic double bonds, of the formula R 2 (CR 3 ═CH 2 ) X (I) where R 2 is a trivalent or tetravalent hydrocarbon radical optionally containing one or more non-adjacent oxygen, silicon, or titanium heteroatoms, R 3 is a hydrogen atom or alkyl radical, and x is 3 or 4 with an organosiloxane (2) having terminal Si-bonded hydrogen atoms, in the presence of at least one hydrosilylation catalyst (3), the ratio of Si-bonded hydrogen in the organosiloxane (2) to aliphatic double bond in compound (1) being from 1.3 to 10, and reacting, in a second step, SiH-containing hydrocarbon-siloxane copolymer(s) obtained in the first step with at least one α,ω-dialkenylsiloxane polymer (4), in the presence of at least one hydrosilylation a catalyst (3), the ratio of aliphatic double bonds in the α,ω-dialkenylsiloxane polymer (4) to SiH groups in the hydrocarbon-siloxane copolymer(s) being from 1.2 to 10, and optionally, in a third step, equilibrating alkenyl-functional siloxane copolymer(s) obtained from the second step with one or more organopolysiloxane(s) (5) selected from the group consisting of linear organopolysiloxanes containing terminal triorganosiloxy groups, linear organopolysiloxanes containing terminal hydroxyl groups, branched organopolysiloxanes optionally containing hydroxyl groups, cyclic organopolysiloxanes, and copolymers comprising diorganosiloxane and monoorganosiloxane units.