Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1989-10-16
1991-07-02
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
C08G 1842
Patent
active
050286854
ABSTRACT:
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.
REFERENCES:
patent: 4102868 (1978-07-01), Genetti et al.
Ballinger Bruce H.
Dalrymple David C.
Ho W. S. Winston
Mastondrea Robert P.
Sartori Guido
Exxon Research & Engineering Company
Hantman Ronald D.
Welsh Maurice J.
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