Hydroesterification of polymerized conjugated dienes

Details Hydroesterification of polymerized conjugated dienes Hydroesterification of polymerized conjugated dienes

1989-05-26

1991-01-01

Lipman, Bernard

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

Synthetic resins

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

5253329, 5253331, 5253332, 525370, 525383, 525384, C08F 800

Patent

active

049819160

ABSTRACT:
Polymerized 1,3-butadiene, including styrenic block copolymers, are functionalized with both carboxylic ester groups and ketone linking groups by reaction with carbon monoxide and an alcohol. Such conjugated diene polymers can be reacted in the presence of a catalyst composition that includes a cobalt compound and an amine ligand. The functionalized 1,3-butadiene polymers may be hydrogenated with a nickel/aluminum catalyst which removes olefinically unsaturated carbon-carbon bonds without substantially hydrogenating the ketone linking groups and carboxylic ester groups.

REFERENCES:
patent: 3539654 (1970-11-01), Pautrat et al.
patent: 3776981 (1973-12-01), Winkler et al.

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