Patent Number: 6,252,007

Title: Elastomers having a reduced hysteresis via interaction of polymer with silica surfaces

Abstract: The reduction of hysteresis in a silica-filled, vulcanized elastomeric compound is produced by mixing diene monomer and optionally monovinyl aromatic monomer with an initiator and a coordinator; effecting polymerization conditions; terminating polymerization with a terminator containing an organo-tin group to form a tin-coupled diene elastomer; compounding the tin-coupled diene elastomer with an amorphous silica filler and a vulcanization agent; and, effecting vulcanization. A pneumatic tire tread stock incorporating the vulcanized elastomer compound exhibits decreased rolling resistance in the tire.

Inventors: Oziomek; James (Cuyahoga Falls, OH), Hergenrother; William L. (Akron, OH)

Assignee: Bridgestone Corporation

International Classification: C08C 19/44 (20060101); C08F 36/00 (20060101); C08C 19/00 (20060101); C08F 36/04 (20060101); C08K 3/36 (20060101); C08K 3/00 (20060101); C08C 019/25 (); C08C 019/20 (); C08L 007/00 ()

Expiration Date: 06/26/2018