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US 4,394,489 AGranted
Fluoroelastomer curatives
AssigneeE. I. Du Pont de Nemours and Company
InventorCarl A. Aufdermarsh
Life of this patent
Estimating the term…
Abstract
Allyl-, propargyl- and allenyl- tin curatives for fluoroelastomers with nitrile cure sites provide rapid curing combined with excellent stability in aqueous environments.
Claims7
In a nitrile-substituted fluoroelastomer composition containing a curing agent, the improvement wherein the curing agent comprises about from 1 to 10 parts per 100 parts by weight of elastomer of an organotin compound having the general formula R.sub.x SnY.sub.4-x wherein x is 0-3, R is aryl of 6-10 carbon atoms or alkyl of 1-4 carbon atoms, and Y is at least one of allyl, propargyl, and allenyl.
Dependencies are inferred from the claim text.