Catalytic dehydrohalogenation process for allylically halogenate

Details Catalytic dehydrohalogenation process for allylically halogenate Catalytic dehydrohalogenation process for allylically halogenate

1977-03-07

1979-03-20

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 20, 526 31, 526 47, 526 482, 526 483, C08F 826

Patent

active

041454928

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 (1972-11-01), Baldwin
patent: 3816371 (1974-06-01), Baldwin et al.
patent: 3852253 (1974-12-01), Malatesta
patent: 3919131 (1975-11-01), Malatesta et al.

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