反应详情

Reaction between 500 grams of isophorone diisocyanate and 62.6 grams of cyclohexyl isocyanate was effected in the presence of 5.63 grams of a carbodiimidizing catalyst (3methyl-1-phenyl-2-phospholene-1-oxide) at 180° C. for 24 hours, yielding isophorone carbodiimide having a degree of polymerization of 10. The carbodiimide resin was thoroughly pulverized. To 200 grams of this carbodiimide, 200 grams of distilled water having 1 gram of a nonylphenyl nonionic surfactant (Nonypol) dissolved therein was slowly added, obtaining a carbodiimide dispersion (resin concentration 50% by weight).