Transparent and colorable elastomeric compositions

Details Transparent and colorable elastomeric compositions Transparent and colorable elastomeric compositions

C - Chemistry, Metallurgy

08

L

C08L 23/28 (2006.01) B60C 1/00 (2006.01) C08K 3/36 (2006.01) C08L 21/00 (2006.01) C08L 23/16 (2006.01) C08L 23/22 (2006.01)

Patent

CA 2306270

Transparent and colorable elastomeric compositions are provided. The transparent elastomeric compositions can be covulcanized with rubbers such as polybutadiene, polyisoprene, styrene-butadiene rubber, styrene-isoprene- butadiene rubber, isoprene-butadiene rubber, ethylene-propylene diene rubber or natural rubber. The colorable rubber compositions have sufficient properties to function as a reinforcing member in an automobile tire. Preferably, both the transparent and colorable elastomeric compositions include at least one copolymer of a C4 to C7 isolefin and a para-alkylstyrene, silica and a coupling agent.

L'invention concerne des compositions élastomères transparentes et des compositions élastomères colorables. Les compositions transparentes peuvent être covulcanisées avec des caoutchoucs tels que le polybutadiène, le polyisoprène, le butadiène-styrène, le styrène-isoprène-butadiène, l'isoprène-butadiène, l'éthylène-propylène-diène ou un caoutchouc naturel. Les compositions colorables ont des propriétés leur permettant de servir d'élément de renforcement dans un pneu d'automobile. De préférence, les compositions élastomères transparentes et les compositions élastomères colorables renferment au moins un copolymère constitué d'une iso-oléfine C¿4?-C¿7? et d'un para-alkylstyrène, de la silice et un agent de couplage.

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