Cross-linked gas selective membranes

Details Cross-linked gas selective membranes Cross-linked gas selective membranes

1989-05-09

1990-06-12

Spitzer, Robert

Gas separation

Means within gas stream for conducting concentrate to collector

55 16, 536 80, B01D 5322, B01D 7116

Patent

active

049329863

ABSTRACT:
Membranes which are used for the separation of gases comprise cellulose acetate membranes which have been crosslinked with an organic titanate. The membranes are prepared by solvent exchanging a cellulose acetate membrane through a series of baths of decreasing polarity followed by treating the membrane with a crosslinking agent comprising an organic titanate in an organic solvent solution which possesses a relatively low polarity. The resulting membranes will retain the original excellent separation characteristics while concomitantly possessing greater temperature and pressure stability and flux characteristics.

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