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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