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US 4,301,270 AGranted
Curative for castable polyurethanes
AssigneeAmerican Cyanamid Company
InventorEugene Y. C. Chang
Life of this patent
Estimating the term…
Abstract
A curative system for castable polyurethanes is disclosed which consists essentially of a mixture of p-di(hydroxyethoxy)benzene and 1,2-bis(2-aminophenylthio)ethane and a method of use therefor.
Claims6
A castable polyurethane curative system consisting essentially of (A) from about 65% to about 99%, by weight, of B-di(hydroxyethoxy)benzene and (B) from about 1% to about 35%, by weight, based on the total weight of the system, of 1,2-bis(2-aminophenylthio)ethane.
Dependencies are inferred from the claim text.