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US 2006/0135660 A1Published application
Rubber compound containing an organothiosulfate and a bismaleimide
AssigneeThe Goodyear Tire & Rubber Company
InventorThomas Hoopes
Life of this patent
Estimating the term…
Abstract
A rubber composition including one or more bismaleimides and/or organothiosulfates, while at the same time having a reduced amount of sulfur, provides for excellent final rubber vulcanizate physical properties, including improved adhesion to metal reinforcement. The composition may be used to form several products, for example, coated metal, coated wire, coated cord, tires, hoses, belts, and shoe soles.
Claims16
A rubber compound comprising:
- (A) a rubber selected from the group consisting of natural rubber, a rubber derived from one or more diene monomers, and mixtures thereof;
- (B) from about 0.05 to about 10 phr of an organothiosulfate;
- and
- (C) from about 0.1 to about 10 phr of a bismaleimide compound selected from the group consisting of N,N′-ethylenebismaleimide, N,N′-hexamethylenebismaleimide, N,N-(m-phenylene)bismaleimide, N,N′-(p-phenylene)-bismaleimide, N,N′-(p-tolylene)bismaleimide, N,N-(oxydi-p-phenylene)bismaleimide, α,α-bis-(4-p-phenylene)-bismaleimide, N,N′-m-xylylene-bis-citraconic imide, and α,α-bis-(4-maleimidophenyl)-meta-diisopropylbenzene.
1 more element
(canceled)
A rubber-metal composite comprising a rubber compound in contact with a metal surface, said rubber compound comprising:
- (A) a rubber selected from the group consisting of natural rubber, a rubber derived from a one or more diene monomers and mixtures thereof;
- (B) from about 0.05 to about 10 phr of an organothiosulfate;
- and
- (C) from about 0.1 to about 10 phr of a bismaleimide compound selected from the group consisting of N,N′-ethylenebismaleimide, N,N-hexamethylenebismaleimide, N,N′-(m-phenylene)bismaleimide, N,N′-(p-phenylene)-bismaleimide, N,N′-(p-tolylene)bismaleimide, N,N′-oxydi-p-phenylene)bismaleimide, α,α-bis-(4-p-phenylene)-bismaleimide, N,N′-m-xylylene-bis-citraconic imide, and α,α-bis-(4-maleimidophenyl)-meta-diisopropylbenzene.
1 more element
A low sulfur rubber compound comprising:
- (A) a rubber selected from the group consisting of natural rubber, a rubber derived from one or more diene monomers and mixtures thereof;
- (B) from about 0.05 to about 10 phr of an organothiosulfate;
- (C) from about 0.1 to about 10 phr of a bismaleimide compound selected from the group consisting of N,N′-ethylenebismaleimide, N,N-hexamethylenebismaleimide, N,N′-(m-phenylene)bismaleimide, N,N′-(p-phenylene)-bismaleimide, N,N′-(p-tolylene)bismaleimide, N,N′-(oxydi-p-phenylene)bismaleimide, α,α-bis-(4-p-phenylene)-bismaleimide, N,N′-m-xylylene-bis-citraconic imide, and α,α-bis-(4-maleimidophenyl)-meta-diisopropylbenzene;
- and
- (D) from about 0.5 to about 7 phr of a sulfur vulcanizing agent.
2 more elements
Dependencies are inferred from the claim text.