Abstract A lightfast aq. polyurethane emulsion for leather finishing was prepared mainly from aliphatic isocyanate.

选择异氰酯为主要原料，制备了一种耐光型水性聚氨酯革涂饰剂。

An efficient palladium-cocatalyst system for vinylation of unsaturated carboxylic acid has been exploited,among which aliphatic amines(ALA)are firstly used as cocatalysts.

以醋钯/邻菲洛林/胺为催化体系,丙烯烯酯为原料,通过烯基交换反应制备丙烯烯酯。