| abstract |
The present invention provides a composition and a process for preparing the composition, the composition comprising at least one halogenated elastomer and an amine or phosphine compound. An additional rubber component may also be present in the composition of the invention. In one embodiment, the halogenated elastomer is an isoolefin copolymer comprising a moiety derived from halomethylstyrene. The amine or phosphine compound corresponds to the formula (R1R2R3) Q, wherein Q is a Group 15 element, preferably nitrogen or sulfur, and wherein R1 is a hydrogen atom or a hydrocarbyl group, R2 is either a hydrogen atom or a hydrocarbyl group, and R3 is a hydrogen atom, a hydrocarbyl group, provided that at least one of R1, R2 and R3 is other than hydrogen. The additional rubber component can be butyl rubber, halogenated butyl rubber, star-branched butyl rubber, halogenated star-branched butyl rubber, isobutylene homopolymer, butadiene rubber, neoprene, nitrile rubber, ethylene / propylene / diene terpolymers / polyene-polyene, butylene rubber copolymers, ethylene / propylene copolymers, styrene halogenated isoolefin / alkylstyrene copolymer, natural rubber, polypropylene, polyethylene, polyurethane, polyvinyl chloride, silicone rubber, propylene oxide polymer and mixtures thereof. SHE |