以淀粉乙二醇糖甙聚醚、多苯基多次甲基多异氰酸酯(PAPI)为主要原料，对聚氨酯硬质泡沫塑料的发泡工艺进行了研究。
A polyurethane (PU) rigid foam was prepared, using PAPI and the polyether polyols deried from starch ethylene glycol glycoside (EGG) as the main materials, and the foaming processing was studied.
甲撑二苯基二异氰酸酯（MDI）生产过程中涉及到了多种危险有害因素。
There are variety of potential risks and hazardous factors in the production of MDI .
一种固化剂4,2-及4,4-二苯基甲烷二异氰酸酯预聚物及其制备方法。
Curing agent 4, 2 '- and 4, 4' -methyl diphenylene diisocyanate prepolymer and preparation thereof.
报道了以二苯基甲烷二异氰酸酯（MDI）、聚醚多元醇及三乙醇胺为原料合成硬质聚氨酯微球的方法。
The preparation of rigid polyurethane microsphere using MDI and N330 as the raw materials was reported.
报道了以二苯基甲烷二异氰酸酯（MDI）、聚醚多元醇及三乙醇胺为原料合成硬质聚氨酯微球的方法。
The preparation of rigid polyurethane microsphere using MDI and N330 as the raw materials was reported.
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