以乙酰苯胺和对苯二胺为原料, 经氯磺化, 酰胺化, 脱乙酰化, 合成了无致癌性染料中间体N, N'-1, 4-苯基二-(4-氨基)苯磺酰胺, ......

The kinetics of mesophase formation of a lyotropic aromatic polyamide from isotropic state has been studied by means of ......

A new amphoteric membrane was prepared by blending long-side-chain sulfonated poly(2,6-dimethyl-1,4-phenylene oxide)(S-L......