Method for preparing asymmetrical separation membrane for separa

Details Method for preparing asymmetrical separation membrane for separa Method for preparing asymmetrical separation membrane for separa

1996-01-11

1999-02-09

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

264184, 2642091, 26421115, 26421117, D01D 506, D01D 5247, D01F 674

Patent

active

058689753

ABSTRACT:
The present invention provide a method for preparing asymmetric separation membrane having thin skin layer having reduced numbers of pin holes on the surface of the membrane for separating water/organic solvent or gas. Imide type asymmetric hollow fiber membrane according to the present invention has superior separation degree and permeability of water/organic solvent or gas over general imide type asymmetric hollow fiber membrane.

REFERENCES:
patent: 3835207 (1974-09-01), Frost et al.

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