Rubber compositions having improved scorch safety
AssigneeUniroyal Chemical Company, Inc.
InventorsSung W. Hong, Peter K. Greene
Life of this patent
Estimating the term…
Abstract
A rubber composition is disclosed wherein the rubber composition contains at least (a) a rubber component; (b) a carbon black filler and (c) an effective amount of a thiuram disulfide accelerator of the general formula 1 wherein R1, R2, R3 and R4 each are the same or different and are hydrocarbons containing from about 8 to about 18 carbon atoms, optionally containing one or more heterocyclic groups, or R1 and R2 and/or R3 and R4 together with the nitrogen atom to which they are bonded are joined together to form a heterocyclic group, optionally containing one or more additional heterocyclic atoms. The compositions may also include suitable amounts of other ingredients such as antiozonants, antioxidants, etc.
Claims21
A rubber composition comprising (a) a rubber component;
- (b) a carbon black filler and (c) an effective amount of a thiuram disulfide accelerator of the general formula
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- wherein R1, R2, R3 and R4 each are the same or different and are hydrocarbons containing from about 8 to about 18 carbon atoms, optionally containing one or more heterocyclic groups, or R1 and R2 and/or R3 and R4 together with the nitrogen atom to which they are bonded are joined together to form a heterocyclic group, optionally containing one or more additional heterocyclic atoms.
A method for improving scorch safety of a rubber composition which comprises the step of forming a rubber composition comprising (a) a rubber component;
- (b) a carbon black filler and (c) an effective amount of a thiuram disulfide accelerator of the general formula
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- wherein R1, R2, R3 and R4 each are the same or different and are hydrocarbons containing from about 8 to about 18 carbon atoms, optionally containing one or more heterocyclic groups, or R1 and R2 and/or R3 and R4 together with the nitrogen atom to which they are bonded are joined together to form a heterocyclic group, optionally containing one or more additional heterocyclic atoms.
An article of manufacture comprising a rubber composition comprising (a) a rubber component;
- (b) a carbon black filler and (c) an effective amount of a thiuram disulfide accelerator of the general formula
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- wherein R1, R2, R3 and R4 each are the same or different and are hydrocarbons containing from about 8 to about 18 carbon atoms, optionally containing one or more heterocyclic groups, or R1 and R2 and/or R3 and R4 together with the nitrogen atom to which they are bonded are joined together to form a heterocyclic group, optionally containing one or more additional heterocyclic atoms.
Dependencies are inferred from the claim text.