POLYCARBODIIMIDE COMPOSITION METHOD FOR PRODUCING POLYCARBODIIMIDE COMPOSITION AQUEOUS DISPERSION COMPOSITION SOLUTION COMPOSITION RESIN COMPOSITION AND RESIN CURED PRODUCT

摘要

A polycarbodiimide composition is a reaction product of a polyisocyanate having a primary isocyanate group and alcohols; the intensity ratio (???????????????????????????+???) of the absorbance IRCI near 2120 cm 1 derived from the stretching vibration of the carbodiimide groups to the absorbance IRUI+U near 1720 cm 1 derived from the stretching vibration of the uretonimine groups and urethane groups in the infrared absorption spectrum is from 1.5 4.5.