HIGHLY HEAT RESISTANT MOLDED ARTICLE PRODUCED BY REACTION INJECTION MOLDING FOR STRUCTURAL MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a surface having high resistance, especially, capacity withstanding heat without generating blister by producing an SRIM molded article (molded product) based on a system having only an aliphatic aldimine as a urea forming chain extender. SOLUTION: A diisocyanate is set to a main component and methylenebis (phenylisocyanate) is contained and an aliphatic aldimine represented by formula is added as a chain extender. In the formula, X is an org. group with valency (n) obtained by removing an amino group from an org. polyamine having an amino group subjected to (cyclo) aliphatic bonding, R<1> and R<2> may be the same or different and are each an org. group being inert to an isocyanate group at 100 deg.C or at temp. therebelow or form an alicyclic or heterocyclic ring together with aβ-carbon atom and (n) is an integer of at least 2.