ROOM-TEMPERATURE-VULCANIZABLE ORGANOPOLYSILOXANE COMPOSITION

PROBLEM TO BE SOLVED: To obtain an organopolysiloxane composition which can give a cured product excellent in adhesion to various resins by compounding an organopolysiloxane with a hydrolyzable-group-containing silane compound or a partial hydrolyzate thereof and a heat-aged mixture of an amine-containing silicon compound with a silazane compound. SOLUTION: This composition comprises 100 pts.wt. organopolysiloxane represented by formula I or II, 0.1-30 pts.wt. silane compound having at least two Si-bonded hydrolyzable groups in the molecule, and 0.1-10 pts.wt. heat-aged mixture of a silicon compound containing primary and/or secondary amines with a silazane represented by formula III. In formula I, R1s, which may be the same or different from each other, are each a 1-10C monovalent hydrocarbon group; and n is an integer of 10 or greater. In formula II, R1s and n are as defined in formula I; R2s and R3s are each a 1-8C monovalent hydrocarbon group; and m is 0 or 1. In formula III, R4s are each 1-10C monovalent hydrocarbon group; R5s are each a hydrolyzable group; and a is an integer of 0-3.