知识贝壳
知识贝壳
所属栏目：合成革专业英语
2.2.1 IsocyanatesAs a rule,isocyanates are obtained by the phosgenation of the corresponding primary amines(Fig.2-1).Fig. 2-1 Manufacture of isocyanates by phosgenation of primary aminesAlternatively,phosgene - free manufacturing processes have been devel ......（本文共 32492 字 , 11 张图） [阅读本文]>>