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1.发明授权Method of enhancing gas separation performance of an aromatic polyimide membrane 失效提高芳族聚酰亚胺膜气体分离性能的方法
公开(公告)号：US5246743A
公开(公告)日：1993-09-21
申请号：US978635
申请日：1992-11-19
CPC分类号： B01D67/009 , B01D71/64 , B29C59/14 , C08L79/08 , B29K2079/00 , B29L2031/755
摘要： A method of enhancing the gas-separation performance of an aromatic polyimide membrane with high reproducibility, by plasma-treating an asymmetric aromatic polyimide membrane comprising 80 to 100 molar % of at least one type of recurring units selected from those of the formulae (A) and (B) and 0 to 20 molar % of recurring units of the formula (C): ##STR1## in the formulae of which, R.sup.1, R.sup.2, R.sup.3 =an aromatic residue derived from an aromatic diamine compound and R=a tetravalent aromatic residue derived from an aromatic tetracarboxylic acid compound and different from tetravalent the aromatic tetracarboxylic acid residues appearing in the formulae (A) and (B), and has a helium gas-permeation rate [P.sub.He ] of 1.times.10.sup.-4 cm.sup.3 /cm.sup.2.sec.cmHg or more at 80.degree. C. and a ratio [P.sub.He ]/[P.sub.N2 ] of the helium gaspermeation rate [P.sub.He ] to a nitrogen gas-permeation rate [P.sub.N2 ] of 20 or more at 80.degree. C., in an atmosphere comprising ammonia.
摘要翻译： 通过等离子体处理包含80-100摩尔％的至少一种选自式（A）的重复单元的重复单元的不对称芳族聚酰亚胺膜，提高了具有高再现性的芳族聚酰亚胺膜的气体分离性能的方法， 和（B）和（B）和（C）中的（B）和0至20摩尔％的式（C）的重复单元：其中R 1，R 2，R 3 = 衍生自芳族二胺化合物的芳族残基，R =衍生自芳族四羧酸化合物的四价芳香族残基，与式（A）和（B）中出现的四价芳香族四羧酸残基不同，具有氦气 - 在80℃下渗透速率[PHe]为1×10 -4 cm 3 / cm 2·sec·cmHg或更高，氦气渗透速率[PHe]与氮气渗透速率[PN2]的比[PHe] / [PN2] ]在80℃下在包含氨的气氛中为20以上。
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公开(公告)号：US06464755B2
公开(公告)日：2002-10-15
申请号：US09766116
申请日：2001-01-19
IPC分类号： B01D5322
CPC分类号： B01D69/02 , B01D53/228 , B01D53/268 , B01D71/64
摘要： An asymmetric membrane is formed using a mixture of two or more different polymers including at least one type of polyimide. It is thereby possible to produce a gas separation membrane with low permeation resistance (a high permeation rate) for permeate gases passing through the porous layer of the membrane, which also maintains a practical level of mechanical strength of the membrane and has excellent water resistance and hot water resistance.
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公开(公告)号：US5744575A
公开(公告)日：1998-04-28
申请号：US659330
申请日：1996-06-06
申请人： Shunsuke Nakanishi , Kenji Ito , Yoshihiro Kusuki
发明人： Shunsuke Nakanishi , Kenji Ito , Yoshihiro Kusuki
CPC分类号： C08G73/1078 , B01D71/64 , Y10T428/29 , Y10T428/2913 , Y10T428/2971 , Y10T428/31504 , Y10T428/31721
摘要： An aromatic polyimide having a recurring unit of the formula (I): ##STR1## wherein Ar is a divalent aromatic group having one or two benzene rings which has a sulfonate group of --SO.sub.3 H, --SO.sub.3 M, and --SO.sub.3 N(L).sub.4 on the ring, wherein M is an alkali metal and L is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, is favorably employed in the form of a semipermeable film for gas separation.
摘要翻译： 具有式（I）的重复单元的芳族聚酰亚胺：其中Ar是具有一个或两个具有-SO 3 H，-SO 3 M和-SO 3 N（L ）4，其中M为碱金属，L为氢原子或碳原子数为1〜5的烷基，优选以气体分离用的半透膜形式使用。
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公开(公告)号：US06210464B1
公开(公告)日：2001-04-03
申请号：US09305528
申请日：1999-05-05
IPC分类号： B01D5322
CPC分类号： B01D63/02 , B01D53/22 , B01D63/027 , B01D2313/025 , B01D2313/23
摘要： A mixed gas-separating membrane module having a high separating efficiency includes a cylindrical container having a mixed gas-feed section, a non-permeated gas-delivery section, and a middle section; a bundle of a plurality of hollow fibers each extending through the middle section and each having an end portion opening to the mixed gas-feed section and an opposite end portion opening to the non-permeated gas-delivery section; a pair of a first disk supporting the hollow fiber end portion opening to the mixed gas-feed section and partitioning the middle section from the mixed gas-feed section, and a second disk supporting the opposite hollow fiber end portions opening to the non-permeated gas-delivery section and partitioning the middle section from the non-permeated gas-delivery section, the first and second disks supporting the hollow fibers so that the hollow fibers are spaced from each other, to leave a continuous space between the hollow fibers; and a cylindrical film member surrounding the hollow fiber bundle to such an extent that the continuous space formed between the hollow fibers is connected to a permeated gas-delivery outlet of the middle section, the middle section, having a permeated gas-delivery outlet located close to the first disk and a carrier gas-feed inlet located close to or in the second disk, to allow the carrier gas fed into the middle section to flow through the continuous space, countercurrently to the flow of the mixed gas through the hollow fibers.
摘要翻译： 具有高分离效率的混合气体分离膜组件包括具有混合气体供给部分，非渗透气体输送部分和中间部分的圆柱形容器; 多个中空纤维束，每个中空纤维各自延伸穿过中间部分，并且每个中空纤维具有通向混合供气部分的端部部分和与非渗透气体输送部分开口的相对端部; 一对第一盘，其支承通向所述混合气体供给部的中空纤维端部，并且将所述中间部分与所述混合气体供给部隔开;以及第二盘，其支撑所述相对的中空纤维端部， 气体输送部分并且将中间部分与非渗透气体输送部分分隔开，第一和第二圆盘支撑中空纤维，使得中空纤维彼此间隔开，以在中空纤维之间留下连续空间; 以及围绕中空纤维束的圆柱形薄膜构件，使得形成在中空纤维之间的连续空间连接到中间部分的渗透气体输送出口，中间部分具有位于关闭位置的渗透气体输送出口 位于靠近或位于第二盘的第一盘和载气进料入口，以允许进入中间部分的载气与通过中空纤维的混合气体的流动逆流地流过连续空间。
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5.发明授权Aromatic polyimide double layered hollow filamentary membrane and process for producing same 失效芳香族聚酰亚胺双层中空丝状膜及其制造方法
公开(公告)号：US5141642A
公开(公告)日：1992-08-25
申请号：US333950
申请日：1989-04-06
摘要： An aromatic polyimide double layered hollow filamentary membrane having an excellent heat resistance, chemical resistance, pressure-resistance, and gas-permeating and separating properties comprises (A) an aromatic imide polymer hollow filamentary microporous inner layer and (B) an aromatic imide polymer tubular filamentary asymmetric outer layer composed of (a) tubular filamentary microporous intermediate layer covering and united with the outside surface of the inner layer (A) and (b) a thin dense outside surface layer covering and united with the intermediate layer (a).
摘要翻译： 具有优异的耐热性，耐化学性，耐压性和气体渗透性和分离性的芳族聚酰亚胺双层中空丝状膜包括（A）芳族酰亚胺聚合物中空丝状微孔内层和（B）芳族酰亚胺聚合物管 由（a）覆盖并与内层（A）的外表面组合的管状丝状微孔中间层和（b）覆盖并与中间层（a）结合的薄密集外表面层构成的丝状不对称外层。
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6.发明授权Pervaporation method of selectively separating water from an organic material aqueous solution through aromatic imide polymer asymmetric membrane 失效通过芳族酰亚胺聚合物不对称膜选择性分离有机材料水溶液中的水的全蒸发方法
公开(公告)号：US4997462A
公开(公告)日：1991-03-05
申请号：US505443
申请日：1990-04-05
CPC分类号： B01D61/362 , B01D71/64 , C08G73/1042 , C08G73/105 , C08G73/1071
摘要： A pervaporation separation method of water from an organic material aqueous solution at a high separating efficiency is effected by using a specific asymmetric separating membrane comprising a heat-resistant, solvent-soluble aromatic imide polymer prepared by the polymerization and imidization of an aromatic tetracarboxylic acid component comprising, as a principal ingredient, at least one biphenyl tetracarboxylic acid compound with an aromatic diamine component comprising a principal member selected from: ##STR1## and an additional member selected from another aromatic diamine compounds having 2 to 5 benzene ring structures and different from the diamine compounds (I) and (II).
摘要翻译： 以高分离效率从有机材料水溶液中的水的渗透蒸发分离方法是通过使用特定的不对称分离膜来实现的，所述不对称分离膜包含通过芳族四羧酸组分的聚合和酰亚胺化制备的耐热溶剂可溶性芳族酰亚胺聚合物 包括作为主要成分的至少一种联苯四羧酸化合物与芳族二胺组分，其包含选自以下的主要成员：（I）和图像（II），以及选自另一种选自另一种芳族二胺化合物的组分， 2〜5个苯环结构，不同于二胺化合物（I）和（II）。
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7.发明授权Pervaporation method of separating liquid organic compound mixture through aromatic imide polymer asymmetric membrane 失效通过芳族酰亚胺聚合物不对称膜分离液体有机化合物混合物的全蒸发方法
公开(公告)号：US4959151A
公开(公告)日：1990-09-25
申请号：US412892
申请日：1989-09-26
CPC分类号： B01D61/362 , B01D71/64 , C08G73/1042 , C08G73/1053 , C08G73/1071
摘要： A pervaporation method of separating a liquid organic compound mixture at a high speed and efficiency through an aromatic polyimide asymmetric separating membrane produced from an aromatic tetracarboxylic acid component comprising at least 70 molar % of biphenyl or diphenylether tetracarboxylic dianhydride and an aromatic diamine component comprising 85 molar % or more of an aromatic diamine having 2 to 3 benzene ring structure, or 15 molar % or more of 9,10-di(aminophenyl)anthracene, di(aminophenoxy)diphenylsulfone, di(aminophenoxy)biphenyl or di(aminophenoxy)diphenylalkane compounds, or a mixture of 15 to 50 molar % of an aromatic diamine having alone benzene or pyridine ring structure and 50 to 85 molar % of an aromatic diamine having a 2 to 3 benzene ring structure.
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公开(公告)号：US4474662A
公开(公告)日：1984-10-02
申请号：US368027
申请日：1982-04-13
CPC分类号： C08J9/28 , B01D71/64 , C08J2379/08
摘要： A porous membrane of an aromatic polyimide having an enhanced permeability of a gas or liquid is produced by a process comprising the steps of(1) preparing a dope solution of 3 to 30% by weight of an aromatic polyimide in a mixed solvent of (A) 100 parts by weight of a base solvent capable of dissolving 5% by weight or more of the polymeric acid and of evaporating at 30.degree. C. to 400.degree. C. and (B) 5 to 150 parts by weight of an additional liquid not capable of dissolving 3% by weight or more of the polyamic acid and capable of evaporating at a smaller evaporating rate than that of the base solvent at the above-mentioned evaporating temperature;(2) forming a thin layer of the dope solution at 0.degree. C. to 120.degree. C.; and(3) heating the dope solution layer at 30.degree. C. to 400.degree. C. so as to evaporate off the mixed solvent and to convert the polyamic acid to the corresponding polyimide.
摘要翻译： 通过包括以下步骤的方法制备具有增强的气体或液体的渗透性的芳族聚酰亚胺的多孔膜：（1）在（A）的混合溶剂中制备3-30重量％的芳族聚酰亚胺的涂料溶液 ）100重量份能够溶解5重量％以上聚合酸并在30℃至400℃蒸发的基础溶剂和（B）5至150重量份的另外的液体不是 能够在上述蒸发温度下溶解3重量％以上的聚酰胺酸，能够以比碱性溶剂更低的蒸发速度蒸发; （2）在0℃〜120℃下形成薄层溶液。 和（3）在30℃〜400℃下加热掺杂溶液层，从混合溶剂中蒸发掉，并将聚酰胺酸转化为相应的聚酰亚胺。
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公开(公告)号：US5286539A
公开(公告)日：1994-02-15
申请号：US942287
申请日：1992-09-09
CPC分类号： B01D71/64 , C08G73/1039 , C08G73/1042 , C08G73/1085 , Y10T428/1352 , Y10T428/1376 , Y10T428/139 , Y10T428/31721
摘要： A gas separating asymmetric membrane such as a gas separating asymmetric hollow fiber comprises an aromatic polyimide comprising recurring units of the formulae (I) and (II): ##STR1## wherein A.sup.1 is a tetravalent unit having a diphenylhexafluoropropane structure, A.sup.2 is a tetravalent unit having a benzene structure, and A.sup.3 is a divalent aromatic unit which is a unit derived from a sulfur atom-containing diamine such as diaminodibenzothiophene, diaminodiphenylenesulfone, diaminothioxanthene-5,5-dioxide or diaminothioxanthone-5,5-dioxide. The aromatic polyimide contains the recurring unit of the formula (I) in an amount of 40 to 90 molar % and the recurring unit of the formula (II) in an amount of 10 to 40 molar %. Further, a process for the preparation of the gas separating asymmetric hollow fiber membrane is also disclosed.
摘要翻译： 气体分离不对称膜如气体分离不对称中空纤维包含芳族聚酰亚胺，其包含式（I）和（II）的重复单元：（*化学结构*）（I）（*化学结构*）（II）其中 A1是具有二苯基六氟丙烷结构的四价单元，A2是具有苯结构的四价单元，A3是作为来自含硫原子的二胺的单元的二价芳族单元，例如二氨基二苯并噻吩，二氨基二苯基砜，二氨基噻吨-5,5 二氧化钛或二氨基噻吨酮-5.5-二氧化物。 芳族聚酰亚胺含有40〜90摩尔％的式（I）的重复单元，式（II）的重复单元的用量为10〜40摩尔％。 此外，还公开了制备气体分离非对称中空纤维膜的方法。
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公开(公告)号：US4486376A
公开(公告)日：1984-12-04
申请号：US392169
申请日：1982-06-25
CPC分类号： B01D67/0088 , B01D71/64 , B01D71/68
摘要： A modified polymeric membrane having an excellent separating property is produced by applying, to a porous polymeric membrane, a volatile treating liquid containing a modifying agent which consists of at least one member selected from:(A) volatile dissolving organic liquids each capable of dissolving therein at least 1% by weight of the porous polymeric membrane at a temperature of 25.degree. C.; and(B) volatile shrinking organic liquids each capable of causing the porous polymeric membrane to shrink at a shrinkage of 3% or more.
摘要翻译： 通过向多孔聚合物膜施加含有改性剂的挥发性处理液制备具有优异分离性的改性聚合物膜，所述改性剂由至少一种选自以下的成分组成：（A）各自能溶解在其中的挥发性溶解有机液体 至少1重量％的多孔聚合物膜在25℃的温度下进行。 和（B）挥发性收缩的有机液体，其各自能够使多孔聚合物膜以3％以上的收缩率收缩。
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