Method for modifying rubbers

Details Method for modifying rubbers Method for modifying rubbers

1983-06-22

1985-06-25

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...

5253378, 5253379, 5253331, 5253332, 525371, 525377, 525379, 525386, C08F 832

Patent

active

045255415

ABSTRACT:
A method for modifying a rubber having an unsaturated carbon bond which comprises reacting the rubber with an organic compound represented by the general formula ##STR1## wherein --R represents a hydrocarbon group, and --X is --H, --CN or ##STR2## in which --Y represents an organic atomic grouping, in the presence of a Lewis acid to introduce an ester group. Optionally, the ester group introduced is converted into a carboxyl group by chemically treating the reaction product.

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patent: 3803087 (1974-04-01), Vaughn
patent: 3972867 (1976-08-01), Dawans et al.
patent: 4144226 (1979-03-01), Crutchfield et al.
patent: 4173552 (1979-11-01), Kuceski et al.
patent: 4228254 (1980-10-01), Powers et al.
patent: 4284541 (1981-08-01), Takeda et al.

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