Low bromine isobutylene-co-4-bromomethylstyrene compositions...

Details Low bromine isobutylene-co-4-bromomethylstyrene compositions... Low bromine isobutylene-co-4-bromomethylstyrene compositions...

C - Chemistry, Metallurgy

08

F

C08F 8/18 (2006.01) C08F 8/20 (2006.01) C08J 3/24 (2006.01) C08K 3/22 (2006.01) C08K 5/41 (2006.01) C08K 13/02 (2006.01) C08L 23/28 (2006.01)

Patent

CA 2259167

Tire curing bladders are made from poly(isobutylene-co-4-bromomethylstyrene) with a benzylic bromine content of from 0.15 to 0.45 mole percent, vulcanized with a cure system of 1,6-hexamethylene-bis(sodium thiosulfate) and zinc oxide. The vulcanizate has low residual benzylic bromine content which leads to enhanced stability under severe duty applications, reduced hot tension set, and reduced adhesion or co-cure to halobutyl tire innerliners.

Enveloppes de réparation de pneus fabriquées dans du poly(isobutylène-co-4-bromométhylstyrène) à contenu bromine benzylique de 0,15 à 0,45 molécule-gramme en pourcentage, vulcanisé par un agent de vulcanisation de 1,6-hexaméthylène-bis(sodium thiosulfate) et de l'oxyde de zinc. Le vulcanisât possède un contenu bromine benzylique résiduel faible conduisant à une stabilité renforcée sous des applications de charges lourdes, à une tension thermique réduite et à une adhérence réduite ou co-curative des gommes intérieures halobutylées du pneumatique.

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