Synthesis,Characterization of a Novel Light Stable Cross-Linker-Isophorone Diisocyanate Terpolymer Composite

摘要

Isophorone diisocyanate (IPDI) is an alicyclic isocyanate,in which the outcomes always possess good light and heat stability.A novel IPDI terpolymer composite were synthesized and characterized using Fourier transform infrared (FTIR),Nuclear magnetic resonance (NMR),gas permeation chromatography (GPC),and the chemical analysis method.The result showed that IPDI terpolymer composite could be prepared in the presence of Cat-5 catalyst and under the reaction temperature between 70 approx 90 deg C.The colorless or pale yellow liquid products without solvent could be obtained in a short time under optimized reaction conditions.In addition,the IPDI trimer/monomer mixture having an NCO content ranging from 25.0 to 28.0 and average nominal functionality of from 2.5 to 2.8 could be compatible with sufficient reactivity and liquidity.