Polymide copolymers containing polycarbonate soft segments

Details Polymide copolymers containing polycarbonate soft segments Polymide copolymers containing polycarbonate soft segments

1996-05-07

1998-05-26

Mosley, Terressa

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

585819, 128637, C08G 6302

Patent

active

057566437

ABSTRACT:
A new copolymer composition comprises the hard segment of a polyimide and the soft segment of an oligomeric aliphatic polycarbonate or a mixture of an oligomeric aliphatic polycarbonate and an oligomeric aliphatic polyester. The new polyimide copolymer membranes have exhibited high selectivity and flux for separation of an aromatic/saturate mixture.

REFERENCES:
patent: 5139023 (1992-08-01), Stanley
patent: 5180496 (1993-01-01), Sartori
patent: 5396019 (1995-03-01), Sartori et al.

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