Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1994-11-01
1999-10-05
Zitomer, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 78, 525 80, 525298, 525302, 525308, 5253319, 5253333, 5253331, 525370, C08F 842, C08L 900, C08L 1100
Patent
active
059625937
ABSTRACT:
A graft copolymer rubber comprising an unsaturated hydrocarbon rubber backbone having pendently grafted thereto a polymerized metal salt of an unsaturated carboxylic acid is provided. The graft copolymer rubber is prepared by a method which involves dissolving an unsaturated hydrocarbon rubber in a solvent to form a rubber solution, adding a metal salt of an unsaturated carboxylic acid to the solution, adding a free radical initiator to the solution and then heating the resultant reaction mixture at a temperature of from about 40 to about 150.degree. C. for a time period of from about 0.1 to about 100 hours.
The resultant graft copolymer rubber is sulfur curable and when compounded with conventional rubber additives and cured forms rubber compounds having high modulus. The graft copolymer rubbers of the invention can be used in various end use applications where high strength properties are important such as tires, industrial rubber goods and the like.
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Doshak John M.
Hergenrother William L.
Ravagnani Frederick J.
Bridgestone Corporation
Troy, Sr. Frank J.
Zitomer Fred
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