Abstract A lightfast aq. polyurethane emulsion for leather finishing was prepared mainly from aliphatic isocyanate.
选择
族异氰酸酯为主要原料，制备了一种耐光
聚氨酯皮革涂饰剂。
族的,
的
的，烃的;
病的,患恐病的,不易被沾湿的;;;醇酸族胺；胺族烃Abstract A lightfast aq. polyurethane emulsion for leather finishing was prepared mainly from aliphatic isocyanate.
选择族异氰酸酯为主要原料，制备了一种耐光聚氨酯皮革涂饰剂。
An efficient palladium-cocatalyst system for vinylation of unsaturated carboxylic acid has been exploited,among which aliphatic amines(ALA)are firstly used as cocatalysts.
以醋酸钯/邻菲洛林/胺为催化体系,丙烯酸和乙酸乙烯酯为原料,通过乙烯
交换反应制备丙烯酸乙烯酯。
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