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    • 8. 发明授权
    • Porous aromatic imide polymer membrane and a process for its manufacture
    • 多芳香族酰亚胺聚合物膜及其制造方法
    • US4512893A
    • 1985-04-23
    • US367954
    • 1982-04-13
    • Hiroshi MakinoYoshihiro KusukiTakashi HaradaHiroshi ShimazakiTosio Isida
    • Hiroshi MakinoYoshihiro KusukiTakashi HaradaHiroshi ShimazakiTosio Isida
    • B01D71/64C08G73/14C08J9/28B29D27/04B32B9/02
    • C08J9/28B01D71/64C08G73/14C08J2379/08Y10S55/05
    • A porous aromatic imide polymer membrane usable as a gas or liquid separator or concentrator is prepared by a process comprising the steps of:(1) dissolving 3 to 30% by weight of an aromatic imide polymer which comprises at least 80 molar % of a recurring unit selected from those of the formulae (I) and (II): ##STR1## wherein R represents a divalent aromatic or heterocyclic radical in 70 to 97% by weight of a solvent consisting essentially of a homogeneous mixture of:(A) 100 parts by weight of a base solvent which consists essentially of at least one polar organic compound and is capable of dissolving therein said aromatic imide polymer in a concentration of 5% by weight or more therein and of evaporating at a temperature of from 50.degree. to 400.degree. C., and(B) 5 to 150 parts by weight of an additional liquid which consists essentially of at least one polar organic compound, is incapable of dissolving therein 3% by weight or more of said aromatic imide polymer and is capable of evaporating at a smaller evaporating rate than that of said base solvent at the above-mentioned evaporating temperature so as to provide a dope solution:(2) forming a thin layer of the dope solution; and(3) heating the thin layer of the dope solution at a temperature of from 50.degree. to 400.degree. C., whereby said mixed solvent is gradually evaporated from the thin layer of the dope solution.
    • 可用作气体或液体分离器或浓缩器的多孔芳族酰亚胺聚合物膜通过包括以下步骤的方法制备:(1)将3至30重量%的芳族酰亚胺聚合物溶解,所述芳族酰亚胺聚合物包含至少80摩尔% 单元选自式(I)和(II)的那些:其中R代表二价芳族或杂环基,其中70至97重量%的基本上由 一种均匀的混合物:(A)100重量份基本溶剂,其基本上由至少一种极性有机化合物组成,并且能够以其中5重量%或更多的浓度溶解在其中的芳族酰亚胺聚合物和蒸发 在50〜400℃的温度下,和(B)5〜150重量份基本上由至少一种极性有机化合物组成的附加液体,不能溶解3重量%以上的 所述芳族酰亚胺聚合物和i 能够在上述蒸发温度下以比所述碱性溶剂更低的蒸发速率蒸发,以提供掺杂溶液:(2)形成薄层的涂料溶液; 和(3)在50-400℃的温度下加热所述涂料溶液的薄层,由此所述混合溶剂从掺杂溶液的薄层逐渐蒸发。