Polyolefin/nylon reinforced rubber
First Claim
1. A modified rubber composition comprising(a) an uncured diene rubber selected from the group consisting of polybutadiene, styrene-butadiene rubber, synthetic polyisoprene rubber, natural 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 structure 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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Accused Products
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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Citations
7 Claims
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1. A modified rubber composition comprising
(a) an uncured diene rubber selected from the group consisting of polybutadiene, styrene-butadiene rubber, synthetic polyisoprene rubber, natural 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 structure formula HOOC--A--S--S--A--COOH wherein A represents an alkylene group containing from about 1 to 10 carbon atoms. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification
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- Resources
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Current AssigneeGoodyear Tire & Rubber Company
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Original AssigneeGoodyear Tire & Rubber Company
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InventorsMiller, Joseph W. Jr., Bauer, Richard G.
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Primary Examiner(s)WOODWARD, ANA LUCRECIA
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Application NumberUS07/772,299Time in Patent Office687 DaysField of Search525/66, 525/179US Class Current525/66CPC Class CodesC08K 5/372 Sulfides , e.g. R-(S)x-R'C08L 21/00 Compositions of unspecified...C08L 23/12 PolypropeneC08L 23/16 Elastomeric ethene-propene ...C08L 2666/06 Homopolymers or copolymers ...C08L 2666/14 Macromolecular compounds ac...C08L 77/00 Compositions of polyamides ...C08L 9/00 Compositions of homopolymer...
