Polymide membrane for separation of solvents from lube oil

Details Polymide membrane for separation of solvents from lube oil Polymide membrane for separation of solvents from lube oil

1993-10-08

1995-07-04

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

21050039, B01D 6912

Patent

active

054297486

ABSTRACT:
An improved asymmetric membrane fashioned from a polyimide for the liquid separation of solvents from lube oil. The membrane is based on a fully imidized polymer based on 5(6)-amino-1-(4'-aminophenyl)-1,3,3-trimethylindane polymer and benzophenone tetracarboxylic dianhydride.

REFERENCES:
patent: 4963303 (1990-10-01), Anderson
patent: 5133867 (1992-07-01), LaFreniere
patent: 5310415 (1994-05-01), Simmons et al.

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