Permselective composite membrane having improved gas permeabilit

Details Permselective composite membrane having improved gas permeabilit Permselective composite membrane having improved gas permeabilit

1991-08-26

1993-01-05

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55524, B01D 5322

Patent

active

051767244

ABSTRACT:
A permselective composite membrane comprising a porous support of a polysulfone or a polyether sulfone in combination with an ultrathin film of a defined polyacetylene whereby an interfacial layer is formed between the support and ultrathin film by the combination of the polysulfone or polyether sulfone and the polyacetylene and facilitates a gas permeability and a separation ratio of an intended gas and a useless gas. The ultrathin film may be covered with another ultrathin film of a different polymer. The interfacial layer made of phthalocyanine or its coordination compound may be provided between the support and the first-mentioned ultrathin film. In this case, various materials for the support and the first-mentioned ultrathin film may be used.

REFERENCES:
patent: 4393113 (1983-07-01), Sugie et al.
patent: 4591440 (1986-05-01), Higashimura et al.
patent: 4689267 (1987-08-01), Takamizawa et al.
patent: 4714481 (1987-12-01), Matsuura et al.
patent: 4746334 (1988-05-01), Matsui et al.
patent: 4755193 (1988-07-01), Higashimura et al.

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