2.Abstract A lightfast aq. polyurethane emulsion for leather finishing was prepared mainly from aliphatic isocyanate.
选择异氰酸为主要原料,制备了一种耐光型性聚氨皮革涂饰剂。
3.Polyurethane_urea used for leather finishing was prepared from aliphatic diisocyanate by ketazine process.
选择二异氰酸,通过酮连氮法制备乳型聚氨—脲皮革涂饰剂。
4.An efficient palladium-cocatalyst system for vinylation of unsaturated carboxylic acid has been exploited,among which aliphatic amines(ALA)are firstly used as cocatalysts.