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
申请人:MITSUI PETROCHEMICAL INDUSTRIES, LTD.
公开号:EP0356208A2
公开(公告)日:1990-02-28
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:
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.
一种可用作膜过滤材料的双马来酰亚胺聚合物是由双马来酰亚胺化合物与过氢二氮杂环化合物聚合而成,其主要结构骨架由下式表示:
其中 R₁、R₂、R₃ 和 R₄ 代表低碳链,低碳链为线性或侧链上含有甲基或乙基;R₅ 代表含有芳香环的二价基团;Y 为 >RN-R-N<,其中 R 为低碳链;m 为 0 或 1。
这种膜过滤材料具有优异的耐有机溶剂性,制成中空纤维或平膜后,具有很高的分离过滤能力和优异的耐有机性。