EP0704481A1
Expired / Lapsed
EP
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Sulfur cured rubber composition containing epoxidized natural rubber and carboxylated nitrile rubber
Assignee: Goodyear Tire and Rubber Co
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Filing: 1995-09-19
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Granted: —
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Expires: 2015-09-19
Abstract
Abstract The present invention relates to a sulfur cured rubber composition particularly suited for use in tire treads. The sulfur cured rubber composition is composed of, based on 100 parts by weight of rubber, from 1.0 to 15 parts by weight of epoxidized rubber; from 1.0 to 15 parts by weight of a carboxylated nitrile rubber; and 98 to 70 parts by weight of a rubber selected from the group consisting of medium vinyl polybutadiene, styrene-butadiene rubber, synthetic cis-1,4-polyisoprene, synthetic 3,4-polyisoprene, natural rubber, cis-polybutadiene, styrene-isoprene rubber, styrene-isoprene-butadiene rubber, acrylonitrile-butadiene rubber and mixtures thereof.
Inventors
- 👤 Paul Harry Sandstrom
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 14:22
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/36; B; B60; B60C; B60C1/00; B60C1/0016; C08L; C08L21/00; Y; Y10; Y10S; Y10S152/00; Y10S152/905
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
77 words
A sulfur cured rubber composition characterized by, based on 100 parts by weight of rubber (phr); (a) 1.0 to 15 parts by weight of epoxidized natural rubber; (b) 1.0 to 15 parts by weight of a carboxylated nitrile rubber; and (c) 98 to 70 parts by weight of a rubber selected from the group consisting of medium vinyl polybutadiene, styrene-butadiene rubber, synthetic cis-1,4-polyisoprene, synthetic 3,4-polyisoprene, natural rubber, cis-polybutadiene, styrene-isoprene rubber, styrene-isoprene-butadiene rubber, acrylonitrile-butadiene rubber and mixtures thereof.
Claim 2
Dependent Claim
30 words
The sulfur cured rubber composition of claim 1 characterized in that the epoxidized rubber has a level of epoxidized modification in the range of from 15 to 85 mole percent.
Claim 3
Dependent Claim
34 words
The sulfur cured rubber composition of claim 1 characterized in that from 0.75 percent to 15 percent by weight chain linkages of said carboxylated nitrile rubber are derived from an unsaturated carboxylic acid monomer.
Claim 4
Dependent Claim
25 words
The sulfur cured rubber composition of claim 1 characterized in that said composition additionally comprises 5 to 85 parts by weight of a silica filler.
Claim 5
Dependent Claim
26 words
The sulfur cured rubber composition of claim 4 characterized in that said composition additionally comprises 0.5 to 8.5 parts by weight of a silica coupling agent.
Claim 6
Dependent Claim
90 words
A pneumatic tire having an outer circumferential tread wherein said tread is characterized by a sulfur cured rubber composition composed of, based on 100 parts by weight of rubber (phr); (a) 1.0 to 15 parts by weight of epoxidized natural rubber; (b) 1.0 to 15 parts by weight of a carboxylated nitrile rubber; (c) 98 to 70 parts by weight of a rubber selected from the group consisting of medium vinyl polybutadiene, styrene-butadiene rubber, synthetic cis-1,4-polyisoprene, synthetic 3,4-polyisoprene, natural rubber, cis-polybutadiene, styrene-isoprene rubber, styrene-isoprene-butadiene rubber, acrylonitrile-butadiene rubber and mixtures thereof.
Claim 7
Dependent Claim
28 words
The pneumatic tire of claim 6 characterized in that the epoxidized rubber has a level of epoxidized modification in the range of from 15 to 85 mole percent.
Claim 8
Dependent Claim
32 words
The pneumatic tire of claim 6 characterized in that from 0.75 percent to 15 percent by weight chain linkages of said carboxylated nitrile rubber are derived from an unsaturated carboxylic acid monomer.
Claim 9
Dependent Claim
23 words
The pneumatic tire of claim 6 characterized in that said composition additionally comprises 5 to 85 parts by weight of a silica filler.
Claim 10
Dependent Claim
24 words
The pneumatic tire of claim 9 characterized in that said composition additionally comprises 0.5 to 8.5 parts by weight of a silica coupling agent.
References Cited (Backward Citations)
US4585826A
Cited
JPH06220254A
Cited
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