摘要
讨论了酚类、肟类和β－二羰基化合物与多亚甲基多苯基多异氰酸酯（ＰＡＰＩ）的封闭反应的影响因素。应用红外光谱法研究了封闭ＰＡＰＩ在不同温度下的解封反应，考察了其起始解封温度及完全解封温度。
The blocking reaction of PAPI with phenols , oximes and β-dicarbonyl compounds is discussed. The unblocking reaction of blocked PAPI at different temperature is studied with IR spectrometry, the initial and final dissociation temperatures are investigated.
出处
《聚氨酯工业》
2000年第1期9-13,共5页
Polyurethane Industry
关键词
异氰酸酯
封闭
解封
PAPI
聚氨酯
原料
涂料
Polymethylene polyphenyl polyisocyanate Blocking Unblocking Phenol Oxime β-Dicarbonyl compound
