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Membrane filter material having excellent organic solvent resistance, method for formation of membrane filter and process for preparation of bismaleimide polymer to be used for membrane filter
Membrane filter material having excellent organic solvent resistance, method for formation of membrane filter and process for preparation of bismaleimide polymer to be used for membrane filter
A bismaleimide polymer, useful as a membrane filter material, is formed by polymerising a bismaleimide compound with a perhydrodiaza-type heterocyclic compound and has a main structural skeleton represented by the following formula: CHEM wherein R1, R2, R3 and R4 represent a lower carbon chain which is linear or contains a methyl group or ethyl group on the 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 membrane filter material has excellent organic solvent resistance and when formed into a hollow fiber or plain film has a high separating and filtering capacity and an excellent organic resistance.
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机译:通过使双马来酰亚胺化合物与过氢重氮型杂环化合物聚合而形成用作膜过滤材料的双马来酰亚胺聚合物,并且该双马来酰亚胺聚合物具有由下式表示的主要结构骨架:<化学式>其中R1,R2,R3和R4代表直链或在侧链上含有甲基或乙基的低碳链,R5表示含有芳环的二价基团,Y为> R <或> NRN <,其中R为低碳链,m为0或1。该膜过滤材料具有优异的耐有机溶剂性,并且当形成中空纤维或平膜时具有高的分离和过滤能力以及优异的耐有机性。
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