Composition for tire sidewalls and other rubber constructions

Details Composition for tire sidewalls and other rubber constructions Composition for tire sidewalls and other rubber constructions

C - Chemistry, Metallurgy

08

L

C08L 21/00 (2006.01) B60C 1/00 (2006.01) C08L 23/28 (2006.01)

Patent

CA 2286725

Rubber blends of brominated isobutylene/para-methylstyrene copolymers of 9.5 to 20 weight percent aromatic monomer content and 0.2 to 1.0 mole percent benzylic bromine content. The blends have good cure characteristics, good adhesion and flex crack resistance, as well as ozone resistance. The blends are useful in tire sidewalls, and other applications.

L'invention concerne des mélanges de caoutchouc à base de copolymères d'isobutylène/para-méthylstyrène avec une teneur en monomères aromatiques comprise entre 9,5 et 20 % en poids et une teneur en brome benzylique comprise entre 0,2 et 1 mole pour-cent. Ces mélanges possèdent de bonnes caractéristiques de polymérisation, d'adhérence, de résistance au flambage et de résistance à l'ozone. Ils s'utilisent dans les flancs de pneus et peuvent avoir d'autres applications.

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