Bis-(2,5-polythio-1,3,4-thiadiazoles), rubbers containing such compounds, and a method of preparation of bis-(2,5-polythio-1,3,4-thiadiazoles)
AssigneeThe Goodyear Tire & Rubber Company
InventorsJoseph A. Kuczkowski, Michael B. Rodgers, Kevin L. Rollick
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Abstract
This invention relates to bis-(2,5-polythio-1,3,4-thiadiaxoles), a method for their preparation and their use in rubber compounds. Use of these compounds provide for excellent vulcanization of rubbers and result in an improved final rubber vulcanizate possessing good physical properties.
Claims11
Bis-(2,5-polythio-1,3,4-thiadiazoles) consisting of the formula:
- ##STR4## wherein y and x are independently selected from the group consisting of integers of from 2 to 4.
A rubber stock comprising:
- (a) a rubber selected from the group consisting of natural rubber, a synthetic rubber derived from a diene monomer and mixtures thereof;
- (b) from about 0.10 to about 10 phr of a bis-(2,5-polythio-1,3,4-thiadiazole) of the formula:
- ##STR5## wherein x and y are independently selected from the group consisting of integers of from 2 to 4.
A process for accelerating the cure rate of a rubber stock comprising admixing (1) a rubber selected from the group consisting of natural rubber, synthetic rubbers derived from a diene monomer and mixtures thereof with (2) a bis-(2,5-polythio-1,3,4-thiadiazole) consisting of the formula:
- ##STR6## wherein x and y are integers of from 2 to 4.
Dependencies are inferred from the claim text.