Sulfur-containing amine compositions and agents for vulcanizing rubber
AssigneeRobinson Brothers Limited
InventorsWilliam Raymond Poyner, Khirud Behari Chakraborty, Ranvir Singh Virdi
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Abstract
A vulcanizable composition comprises sulfur-vulcanizable rubber, sulfur or a sulfur-donor, a zinc compound, and a sulfur-containing amine of the formula R.sup.1 --S.sub.n --R--NR.sup.2 R.sup.3 wherein R is a divalent radical comprising a chain of at least 2 C atoms, R.sup.1 is an organic radical, and R.sup.2 and R.sup.3 are each H or an organic radical, provided that NR.sup.2 R.sup.3 is not NH(C.sub.1-6 alkyl), and n is an integer, or a salt thereof, provided that the amine is not 3-(methylthio)propylamine. The amine is preferably cystamine.
Claims1
A vulcanizable composition comprising sulfur-vulcanizable rubber;
- a component selected from the group consisting of sulfur and sulfur-donors;
- a zinc compound;
- and a sulfur-containing amine, wherein said sulfur-containing amine is cystamine or a salt thereof.
Dependencies are inferred from the claim text.