Patent ID: 7338996
Filing Date: 2008-03-04
Classification: C09D,C09J

Abstract:
1. A primer composition, comprising (I) an organosilicon compound component consisting essentially of: (A) 100 parts by weight of at least one organopolysiloxane comprising units of the formula wherein g is 0, 1, 2 or 3, m is an integer from 20 to 200 and n is an integer from 10 to 4,000, in which R each, independently, is a hydroxyl radical or a monovalent C R (B) from 5 to 500 parts by weight of one or more organosilicon compounds having at least one hydrolyzable group, of the formulae in which R R X each, independently, is a hydrolyzable group selected from the group consisting of —OR Y each, independently, is a monovalent radical selected from the group consisting of anhydride, aminoalkoxy, acryloyloxy, methacryloyloxy, N-aminoalkylamino, sulfone, sulfonate, phosphate, phosphonate, amino, N-alkylamino, epoxy and mercapto radicals, R c and d are each 0, 1, 2 or 3 and e is 1, 2, 3 or 4, with the proviso that the sum c+d+e=4; c′ and d′ are each 0, 1 or 2 and e′ is 1, 2 or 3, with the proviso that the sum c′+d′+e′=3; and (II) further components (C) from 5 to 500 parts by weight of reinforcing fillers; (D) from 10 to 2000 parts by weight of solvent selected from the group consisting of organic solvents and low molecular weight cyclic or linear polyorganosilicon compounds, and mixtures thereof; (E) from 0 to 80 parts by weight of at least one peroxidic crosslinking agent, (F) from 0 to 50 parts by weight of one or more condensation catalysts, and (G) from 0 to 50 parts by weight of one or more inactive fillers, pigments, dyes, heat stabilizers, alkynols, benzotriazoles, triazoles, fibers or plastics powders.