1.Abstract A lightfast aq. polyurethane emulsion for leather finishing was prepared mainly from aliphatic isocyanate.
选择脂肪族异氰酸酯为主要原料,制备了一种耐光型水性聚氨酯皮革涂饰剂。
2.An efficient palladium-cocatalyst system for vinylation of unsaturated carboxylic acid has been exploited,among which aliphatic amines(ALA)are firstly used as cocatalysts.