Abstract: The present invention provides a silicone rubber-based curable composition with which a silicone rubber having excellent tensile strength and tear strength is obtained, a method for producing a silicone rubber using the silicone rubber-based curable composition, a silicone rubber, a molded article using the silicone rubber, and a tube for medical use formed from the molded article. The silicone rubber-based curable composition of the present invention is characterized in that it includes a vinyl group-containing organopolysiloxane (A), an organohydrogen polysiloxane (B), silica particles (C), a silane coupling agent (D), and platinum or a platinum compound (E).

Abstract: A silicone rubber-based curable composition of the present invention contains: a vinyl group-containing organopolysiloxane (A); an organohydrogen polysiloxane (B); silica particles (C); a silane coupling agent (D); and a platinum or platinum compound (E), wherein satisfied is the following requirement X, or both the following requirements X and Y: Requirement X: the vinyl group-containing organopolysiloxane (A) contains both a vinyl group-containing linear organopolysiloxane (A1) and a vinyl group-containing branch organopolysiloxane (A2), Requirement Y: the organohydrogen polysiloxane (B) contains a mixture (B3) of a linear organohydrogen polysiloxane (B1) and a branch organohydrogen polysiloxane (B2), or the branch organohydrogen polysiloxane (B2). This makes it possible to provide a silicon rubber-based curable composition which can produce a silicone rubber having excellent tensile strength and tearing strength.

Abstract: The present invention provides a silicone rubber-based curable composition with which a silicone rubber having excellent tensile strength and tear strength is obtained, a method for producing a silicone rubber using the silicone rubber-based curable composition, a silicone rubber, a molded article using the silicone rubber, and a tube for medical use formed from the molded article. The silicone rubber-based curable composition of the present invention is characterized in that it includes a vinyl group-containing organopolysiloxane (A), an organohydrogen polysiloxane (B), silica particles (C), a silane coupling agent (D), and platinum or a platinum compound (E).

Abstract: There is disclosed a moisture-curable elastomer composition obtained by dynamic heat treatment of a mixture comprising(a) an ethylene-.alpha.-olefin-unconjugated diene copolymer rubber,(b) a silicon-based crosslinking agent having two or more SiH groups within the molecule,(c) a hydrosilylation catalyst and(d) a hydrolyzable silane group-containing thermoplastic resin. Also disclosed is an elastomer composition resulting from molding of the above elastomer composition, followed by contacting with water, preferably in the presence of a silanol catalyst, to thereby cause crosslinking of the hydrolyzable silane group-containing thermoplastic resin. The elastomer composition of the present invention is excellent in rubber elasticity at high temperatures, low temperature impact resistance and oil resistance and have good moldability.

Abstract: This invention provides a novel thermoplastic elastomer composition which is rich in flexibility and excellent in rubber elasticity over a broad temperature range, high-temperature creep characteristics, low-temperature impact resistance, mechanical strength and moldability, and have good oil resistance, good light discoloration resistance and extremely excellent toning properties in spite of thermoplastic elastomer and which is characterized by being obtained by dynamically heat-treating a mixture of (a) 100 parts by weight of a carbon-to-carbon double bond-containing rubber, (b) 5 to 300 parts by weight of a thermoplastic resin, (c) 0.5 to 30 parts by weight of an organosiloxane crosslinking agent having at least two SiH groups in the molecule, (d) 0.001 to 20 parts by weight of a hydrosilylating catalyst, (e) 0.5 to 20 parts by weight of a compatibilizing agent and, if necessary, (f) 30 to 300 parts by weight of a paraffinic oil.