Membrane filter material having excellent organic solvent...

Details Membrane filter material having excellent organic solvent... Membrane filter material having excellent organic solvent...

C - Chemistry, Metallurgy

08

J

18/27, 402/368

C08J 9/28 (2006.01) B01D 71/62 (2006.01) C08G 73/10 (2006.01) C08G 73/12 (2006.01)

Patent

CA 1337621

Disclosed is a membrane filter material. A bimaleimide polymer is formed by polymerizing a bismaleimide compound with a perhydrodiaza-type heterocyclic compound and has a main structural skeleton represented by the following formula: Image (wherein R1, R2, R3 and R4 represent a lower carbon chain which is linear or contains a methyl group or ethyl group as a side chain, R5 represents a divalent group containing an aromatic ring, Y is >R< or >N-R-N< in which R is a lower carbon chain, and m is 0 or 1). This bismaleimide polymer can be made into a membrane filter material having an excellent organic solvent resistance. When this polymer is formed into a hollow fiber or plain film, a high separating and filtering capacity and an excellent organic resistance can be attained. A membrane filter material having an enhanced organic solvent resistance can be provided by further improving the process for the preparation of a bismaleimide polymer.

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