| 摘要 |
PURPOSE:To obtain a membrane having high sepn. performance in a membrane for separating gaseous mixtures to each other by using poly(acyl sulfone ether amide) as a material. CONSTITUTION:Poly(acryl sulfone ether amide) of about 1,000-100,000 number average mol.wts. is dissolved in a solvent such as dimethyl formamide and the soln. is cast on a glass sheet and is dried, whereby a membrane with 0.01- 1,000mu thickness is prepd. The membrane of this invention is usable for sepn. of liquid mixtures to each other. The coeff. of permeation (CC.cm/cm<2>.sec.cm Hg) of a membrane with 26mu thickness produced by using the DMF soln. of the polysulfone ether amide from the p-aminophenol 4,4'-dichlorodiphenyl sulfone and the isophthalic chloride in one embodiment is N2(1.9X10<-12>), O2(1.9X10<-11>). |
