POLYURETHANE SHEET

摘要

PURPOSE:To prepare a polyurethane sheet having excellent color fastness to light, resistance to deterioration by light, and oleic acid resistance. CONSTITUTION:A polyurethane resin prepd. by reacting a polyol component with a polyisocyanate having a straight-chain alkylene diisocyanate content of at least 50wt.% and a chain extender having a dihydrazide compd. content of at least 10wt.% is used.