Epoxy-curable silicone release coating composition and methods for its preparation and use

A method for preparing the epoxy-curable silicone release coating composition comprising:

• (A) an epoxy-functional polyorganosiloxane comprising unit formula (R1R2R3SiO1/2)a(R1R2SiO2/2)b(R1SiO3/2)c(SiO4/2)d(ZO1/2)e, where each R1, each R2, and each R3 are independently selected from the group consisting of a monovalent hydrocarbon group of 1 to 30 carbon atoms and a monovalent hydrocarbon group of 1 to 30 carbon atoms functionalized with a cyclic epoxy-functional group, Z is H or methyl;
• with the proviso that at least two R1 per molecule is the monovalent hydrocarbon group of 1 to 30 carbon atoms functionalized with the cyclic epoxy-functional group;
• subscript a≥1, subscript b≥0, subscript c≥0, subscript d≥0, subscript e≥0, and 2≤(a+b+c+d)≤1000;
• (B) an inhibited catalyst selected from the group consisting of
• (B-1) a complex comprising
• (i) a fluorinated triaryl borane;
• and
• (ii) an amine of formula R4R5R6N, where, and where each of R4, R5, and R6 is independently selected from the group consisting of alkyl, and substituted alkyl, and each of R4, R5, and R6 is connected to the nitrogen by a non-conjugated carbon;
• and
• (B-2) a Bridged Frustrated Lewis Pair comprising a complex of
• (i) the fluorinated triaryl borane;
• (ii) a Lewis base selected from the group consisting of PR73, P(NR72)3, NR73, N(SiR73)xR73-x, R7C(NR7)N, P(N—R7)R73 and
• where each R7 is independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, aryl, and substituted aryl;
• and
• (iii) a bridging molecule connecting the fluorinated triaryl borane and the Lewis base, where the bridging molecule is selected from the group consisting of carbon dioxide, H2, nitriles, alkenes, alkynes, ketones, esters and aldehydes, where the method comprises mixing, under ambient conditions, starting materials comprising (A) and (B).