Polyolefin/nylon reinforced rubber
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United States of America Patent
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Aug 24, 1993
Grant Date -
N/A
app pub date -
Oct 7, 1991
filing date -
Oct 7, 1991
priority date (Note) -
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Abstract
The present invention relates to a modified rubber composition comprising: (a) an uncured diene rubber selected from the group consisting of polybutadiene, styrene-butadiene rubber, isoprene-butadiene rubber, isoprene-butadiene-styrene rubber, nitrile rubber and carboxylated nitrile rubber; (b) from about 1 to 100 phr of a polymeric blend containing (i) from about 10 to 35 weight percent of at least one nylon, (ii) from about 65 to 90 weight percent of at least one polyolefin selected from the group consisting of polypropylene, polypropylene modified with ethylene, and ethylene/propylene copolymers, and (iii) from about 1 to about 10 weight percent of an anhydride modified polyolefin containing from 0.2 to 9% by weight of chemically combined anhydride; and (c) at least one dithio diacid having the formula HOOC--A--S--S--A--COOH wherein A represents an alkylene group containing from about 1 to 10 carbon atoms.
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