Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1990-11-05
1991-12-17
Spitzer, Robert
Gas separation
Means within gas stream for conducting concentrate to collector
55 68, 55158, 210644, 210649, 21050038, B01D 5322, B01D 7156
Patent
active
050731769
ABSTRACT:
Polyester and polyamide membranes having improved permeation properties are disclosed. The membranes are derived from t-butyl-substituted isophthaloyl halide, in particular, 5-t-butylisophthaloyl chloride. The t-butyl-substituted isophthaloyl chloride can be employed with monomers such as diols and diamines to provide polyesters and polyamides with improved permeation properties.
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Yang et al., "Preparation and Properties of Polyarylates from 5-t-Butylisophthaloyl Chloride and Various Bisphends", (1990), pp. 1353-1359.
E. I. Du Pont de Nemours and Company
Spitzer Robert
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