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

选择脂肪族异氰酸为主要原料，制备了一种耐型水性聚革涂剂。

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.

介气和对硝基苯胺在乙酸乙溶剂中反应来制备对硝基异氰酸苯的方法，并讨论了其最佳工艺条件。