Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-06-01
1989-06-27
Seccuro, Carman J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525186, 525211, 525232, 525237, 525194, 524 87, 524526, C08L 2326, C08L 2316, C08L 900, C08L 700
Patent
active
048431281
ABSTRACT:
An elastomeric composition formed by curing a blend comprised of (A) between about 70 and about 94 phr of a highly unsaturated rubber; (B) between about 3 and about 27 phr of ethylene/propylene
onconjugated diene terpolymer having a number average molecular weight of more than about 35,000; (C) between about 3 and about 27 phr of ethylene/propylene
onconjugated diene terpolymer having a number average molecular weight of between about 500 and about 15,000; between about 2 and about 7.5 phr of a quinoline antioxidant; and (D) an effective amount of curative exhibit unexpectedly desirable ozone resistance. Also disclosed is a process for preparing such elastomeric compositions.
REFERENCES:
patent: 3356764 (1967-12-01), Gentile
patent: 3364155 (1968-01-01), Souffie
patent: 3378512 (1968-04-01), Hamed et al.
patent: 3819552 (1974-06-01), Glanville et al.
patent: 3819592 (1974-06-01), Visser et al.
patent: 3884993 (1975-05-01), Gros
patent: 4481335 (1984-11-01), Stark
Kirk-Othmer, Encyclopedia of Chem. Tech., 3rd Ed., vol. 8, p. 499, and vol. 20, p. 407 (1980).
Seccuro Carman J.
Shedden John A.
Uniroyal Chemical Company, Inc.
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