Polyimide, a method for manufacturing the same, a gas separation

Details Polyimide, a method for manufacturing the same, a gas separation Polyimide, a method for manufacturing the same, a gas separation

1998-03-31

1999-10-19

Hampton-Hightower, P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528 26, 528125, 528128, 528171, 528172, 528173, 528174, 528175, 528183, 528188, 528220, 528224, 528229, 528350, 96 4, 96 8, 96 13, 96 14, 95 43, 95 45, 4284735, C08G 7310

Patent

active

059690879

ABSTRACT:
A novel polyimide having a repeating structure unit expressed by the following general formula (1), a method for manufacturing the same, a gas separation membrane using the novel polyimide and the method for manufacturing the same. The gas separation membrane using this polyimide is excellent in gas permeable performance and separation selectivity for gas, for example, carbon dioxide, methane, etc.
General Formula (1) ##STR1## where R denotes a quadrivalent organic group.

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1990, month not available, H. Yamamoto et al. "Structure/Permeability Relationships of Polyimide Membranes. II", Journal of Polymer Science: Part B: Polymer Physics, vol. 28, pp. 2291-2304.

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