Curing agent 4, 2 '- and 4, 4' -methyl diphenylene diisocyanate prepolymer and preparation thereof.

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。

youdao

Curing agent 4, 2 '- and 4, 4' -methyl diphenylene diisocyanate prepolymer and preparation thereof.

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。

youdao