以一种碱金属羧酸盐k- 1000作为甲苯二异氰酸酯(TDI)三聚反应的催化剂合成了以TDI三聚体为主要成分的多异氰酸酯固化剂。
A polyisocyanate curing agent, which is mainly composed of toluene diisocyanate (TDI) trimer, was prepared in the presence of the base metal carboxylate K-1000.
以一种碱金属羧酸盐k- 1000作为甲苯二异氰酸酯(TDI)三聚反应的催化剂合成了以TDI三聚体为主要成分的多异氰酸酯固化剂。对合成工艺条件进行了探讨。
A polyisocyanate curing agent, which is mainly composed of toluene diisocyanate (TDI) trimer, was prepared in the presence of the base metal carboxylate K-1000. The reaction conditions were studied.
由苯-1，2，4-三羧酸-1，2-酐和羟乙基哌嗪合成酰胺键、叔氨和酯键交替排列的水溶性超支化聚合物。
Synthesis of Water-soluble Hyperbranched Polymer with Alternating Amido, Tertiary Amino and Ester Units from Benzene-1,2,4-tricarboxylic Acid-1,2-anhydride and N-(2-Hydroxyethyl)piperazine.
齐墩果烷- 28 -羧酸甲酯- 2,11,13(18)-三烯在制备治疗皮肤疾病药物中的应用。
Application of oleanane-28-carboxylic methyl ether-2, 11, 13 (18) -triene in preparing medicament for treating skin diseases.
齐墩果烷- 28 -羧酸甲酯- 2,11,13(18)-三烯在制备治疗皮肤疾病药物中的应用。
Application of oleanane-28-carboxylic methyl ether-2, 11, 13 (18) -triene in preparing medicament for treating skin diseases.
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