Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1972-01-19
1978-05-16
Ziegler, J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 459R, 260889, 260892, 260897A, C08L 700
Patent
active
040898202
ABSTRACT:
Sulfur curable ethylene/alpha-monoolefin
onconjugated diene terpolymer-unsaturated rubbery polymer blends are prepared by hot-mixing an ethylene/alpha-monoolefin
onconjugated diene polymer, e.g., ethylene/propylene
onconjugated diene terpolymer rubber (EPDM), e.g., ethylene/propylene/1,4-hexadiene terpolymer, preferably containing any filler to be used, with a promoter, e.g., elemental sulfur, an aromatic dinitroso compound, e.g., p-dinitrosobenzene, a quinonoid nucleus containing compound, e.g., p-quinone dioxime, etc., at about 250.degree.-450.degree. F. for about 1-15 minutes, to improve its cure rate relative to that of an elastomer with which it is to be blended, i.e., its compatibility (vulcanizate properties), and then blending the thus treated material together with an unsaturated rubbery material or elastomer, e.g., styrene/butadiene elastomer to provide products useful in producing, as by vulcanization, various rubbery products, e.g., tire sidewalls, radiator hose, windshield wiper blades, shoe soles, heels, etc.
REFERENCES:
patent: 3359221 (1967-12-01), Schoenbeck
patent: 3580867 (1971-05-01), Spenadel
patent: 3658732 (1972-04-01), Ballini et al.
Phillips Petroleum Company
Ziegler J.
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