Conjugated diene butyl elastomer copolymer

Details Conjugated diene butyl elastomer copolymer Conjugated diene butyl elastomer copolymer

1979-09-17

1981-09-08

Hamrock, William F.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525344, 525356, 525360, 525363, 525371, 525372, C08F 822, C08F 826

Patent

active

042885752

ABSTRACT:
A heterogeneous catalytic process for dehydrohalogenating allylically halogenated olefinic hydrocarbon polymers to produce conjugated diene unsaturated polymeric products is disclosed comprising employing certain metal containing catalyst compositions, especially activated alumina supported copper containing catalysts. The process is especially suitable for the preparation of conjugated diene butyl elastomers from halogenated butyl rubber and produces products having relatively high reactivity levels in terms of active diene content.

REFERENCES:
patent: 3775387 (1973-11-01), Baldwin
patent: 3816371 (1974-06-01), Baldwin et al.
patent: 3852253 (1974-12-01), Malatesta
patent: 3918131 (1975-11-01), Malatesta et al.
patent: 3965213 (1976-06-01), Baldwin et al.
patent: 4145492 (1979-03-01), Gardner

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