Transparent and colorable elastomeric compositions

Details Transparent and colorable elastomeric compositions Transparent and colorable elastomeric compositions

C - Chemistry, Metallurgy

08

L

C08L 23/22 (2006.01) C08K 3/36 (2006.01) C08K 5/541 (2006.01) C08K 5/5419 (2006.01) C08L 21/00 (2006.01) C08L 23/28 (2006.01)

Patent

CA 2412179

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 isoolefin and a para- alkylstyrene, silica and a coupling agent.

L'invention concerne des compositions d'élastomères transparentes et colorables. Ces compositions peuvent subir une co-vulcanisation avec des caoutchoucs tels que du polybutadiène, du polyisoprène, des caoutchoucs au styrène-butadiène, au styrène-isoprène-butadiène, à l'isoprène-butadiène, à l'éthylène-propylène diène ou naturel. Les compostions de caoutchouc colorables possèdent suffisamment de propriétés pour fonctionner en tant qu'élément de renforcement dans un pneumatique d'automobile. Les compositions d'élastomères à la fois transparentes et colorables comprennent, de préférence, au moins un copolymère d'une iso-oléfine en C¿4? à C¿7? et d'un para-alkylstyrène, de la silice et un agent de couplage.

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