A new copolymer composition comprising the soft segment of an aliphatic polyester and the hard segment of a highly halogenated polyurethane containing from 3 to 36 halogen atoms is disclosed. The new halogenated polyurethane copolymer membrane has high thermal stability, and good selectivity and permeability for separation of an aromatic/saturate mixture.
申请公布号
US5093003(A)
申请公布日期
1992.03.03
申请号
US19910676777
申请日期
1991.03.25
申请人
EXXON RESEARCH AND ENGINEERING COMPANY
发明人
HO, W. S. WINSTON;SARTORI, GUIDO;THALER, WARREN A.;BALLINGER, BRUCE H.;DALRYMPLE, DAVID C.;MASTONDREA, ROBERT P.
