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

选择脂氰酸酯为主要原料，制了一种耐光型水性聚氨酯皮革涂剂。

The article is about how to use phosgene and p-nitrophenylamine to react in acetic ether's liquefier to produce p-nitro-phenyl isocyanate, Its best technological condition have been discussed.

介绍用光气和基苯胺在乙酸乙酯溶剂中反应来制基氰酸苯酯的方法，并讨论了其最佳工艺条件。