BINDING COMPOSITIONS BASED ON URETHANE DERIVATIVE OF ALIPHATIC AMINE-NON-COOKING POLYOLS AND USEFUL IN FOUNDRY

摘要

The present invention relates to a binding composition useful for preparing shaped foundry articles for the casting or casting of light metals, in particular aluminum, these articles sagging after casting of said light metals, characterized in that it consists of a mixture of a polyol and a liquid polysocyanate, said polyol being an ammine polyol obtained from an aliphatic amine or that.