Process for the solid state (solventless) hydroxylation of vinyl

Details Process for the solid state (solventless) hydroxylation of vinyl Process for the solid state (solventless) hydroxylation of vinyl

1990-07-02

1991-12-03

Henderson, Christopher

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

Synthetic resins

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

5253329, 5253332, C08F 1920

Patent

active

050701509

ABSTRACT:
The present invention relates to a process for preparing hydroxylated rubber by reacting (a) a rubber having from about 5 to about 75 percent of a 1,2-double bond content with (b) a mercaptan of the formula: ##STR1## wherein n is an integer of from 3 to 19; and wherein the reaction is conducted in the solid state and is catalyzed by a free radical catalyst.

REFERENCES:
patent: 4150015 (1979-04-01), Edwards et al.
patent: 4230841 (1980-10-01), Prudence
patent: 4238575 (1980-12-01), Kleiner et al.
patent: 4357432 (1982-11-01), Edwards
patent: 4530959 (1985-07-01), Armbruster et al.
patent: 4946905 (1990-08-01), Weinstein
CA 66297v Literature Searches.
C. S. Marvel et al. "Polybutadiene Modified by Addition of Thiols Containing Polar Groups", Ind. Eng., Chem. 45, 2090 (1953).
T, Kempermann, "Sulfur-Free Vulcanization Systems for Diene Rubber", Rubber Division American Chemical Society Meeting, Cleveland, Ohio, Oct. 6-9, 1987.

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