SILICONE-RUBBER-BASED CURABLE COMPOSITION, METHOD FOR PRODUCING SILICONE RUBBER, SILICONE RUBBER, MOLDING, AND MEDICAL TUBING

摘要

This silicone rubber-based curable composition is characterized in comprising vinyl-group-containing organopolysiloxane (A), an organohydrodiene polysiloxane (B), silica particles (C), a silane coupling agent (D), and platinum or a platinum compound (E), and in satisfying condition X or both conditions X and Y. Condition X: The vinyl-group-containing organopolysiloxane (A) contains both a vinyl-group-containing straight-chain organopolysiloxane (A1) and a vinyl-group-containing branched organopolysiloxane (A2). Condition Y: The organohydrodiene polysiloxane (B2) contains a branched organohydrodiene polysiloxane (B2) or a mixture (B3) of a straight-chain organohydrodiene polysiloxane (B1) and a branched organohydrodiene polysiloxane. It is thereby possible to provide a silicone-rubber-based curable composition whereby a silicone rubber is obtained having excellent tensile strength and tearing strength.