TWO-PART CURABLE SOLVENTLESS ADHESIVE

摘要

PROBLEM TO BE SOLVED: To provide a two-part curable solventless adhesive holding an excellent appearance and adhesive strength even after a high-temperature sterilizing treatment, moderately regulating a reaction of a principal ingredient with a curing agent and ensuring good operation efficiency when a laminate composite film is produced in which a barrier layer is laminated to a plastic film. SOLUTION: The two-part curable solventless adhesive is prepared from the principal ingredient and the curing agent as follows. A polyol having secondary or tertiary terminal hydroxy groups in an amount of≥30% based on the whole terminal hydroxy groups and containing acid groups is contained in the principal ingredient. An isocyanate group-terminated urethane prepolymer obtained by reacting an araliphatic polyisocyanate with a polyol and having 1.5-2.5 average number of functional groups and an aliphatic polyisocyanate and/or a modified material thereof are contained in the curing agent. COPYRIGHT: (C)2006,JPO&NCIPI