Chemical modification of polyimides
AssigneeInstitute of Materials Research and Engineering
InventorsYe Liu, Dong-Fei Li, Rong Wang, Tai-Shung Chung
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Abstract
A process is provided for chemically modifying a dual-layer hollow fibre, wherein the fibre comprises a first layer consisting essentially of a polyimide and a second layer consisting essentially of a polymer which is substantially unaffected by the chemical modification process. The process comprises contacting the polyimide layer with a polyamine. In addition, a process is provided for chemically modifying a polyimide membrane in general, using a process which comprises contacting the membrane with an alcoholic solution of an aliphatic-aromatic polyamine.
Claims42
A process for chemically modifying a dual-layer hollow fibre, wherein said fibre comprises a first layer consisting essentially of a polyimide and a second layer consisting essentially of a polymer which is substantially unaffected by the chemical modification process, which process comprises contacting said polyimide layer with a polyamine.
A process for chemically modifying a polyimide membrane, which process comprises contacting said membrane with an alcoholic solution of an aliphatic-aromatic polyamine.
Dependencies are inferred from the claim text.