Patent ID: 6423781
Filing Date: 2002-07-23
Classification: C08C,C08F,C08K,Y02T

Abstract:
A pneumatic tire comprising a silica-filled vulcanized compound that comprises a diene elastomer containing an organo-tin functionality derived from a terminator selected from the group consisting of tin tetrachloride, (R1)2SnCl2, R1SnCl3, (R1)2Sn(OR1)2, Sn(OR1)4, dialkyldioxastannylanes of the formula wherein a is 2 or 3, and mixtures thereof, wherein each R1 is independently C1 to about C8 aliphatic, about C6 to about C12 cycloaliphatic, or about C6 to about C18 aromatic, a silica filler, and a vulcanization agent, wherein said silica-filled compound has a reduced viscosity compared to the viscosity of a control silica-filled compound comprising an equivalent diene elastomer containing an organo-silicon functionality derived from a silicon-based terminator.