C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
400/1121, 400/49
C08L 21/00 (2006.01) C08K 5/3437 (2006.01) C08L 23/16 (2006.01)
Patent
CA 1330843
ABSTRACT OF THE INVENTION An elastomeric composition, formed by curing a blend comprised of: (A) between about 83 and About 94 phr of a highly unsaturated rubber; (B) between about 3 and about 27 phr of ethylene/propylene/nonconjugated 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/nonconjugated 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.
580166
Gowling Lafleur Henderson Llp
Uniroyal Chemical Company Inc.
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