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公开(公告)号：US4485056A
公开(公告)日：1984-11-27
申请号：US384495
申请日：1982-06-03
CPC分类号： C08L79/08 , B01D71/64 , C08G73/1028 , C08G73/105 , C08G73/1064 , C08G73/1067 , C08G73/1071 , C08G73/1085 , Y10S264/62
摘要： An aromatic polyimide separating membrane is produced by a process comprising the steps of:forming a thin film of a dope solution containing an aromatic polyamic acid dissolved in a polar organic solvent at a temperature of approximately 100.degree. C. or less;coagulating the thin dope solution film in a coagulating liquid containing at least 60% by volume of at least one member selected from water and lower aliphatic alcohols at a temperature of 60.degree. C. or less;drying the resultant coagulated aromatic polyamic acid membrane; andheating the dried aromatic polyamic acid membrane at a temperature of 100.degree. C. to 300.degree. C. to convert it to an aromatic polyimide membrane.
摘要翻译： 芳族聚酰亚胺分离膜的制造方法包括以下步骤：在约100℃以下的温度下形成溶解于极性有机溶剂中的芳香族聚酰胺酸的涂布液的薄膜; 在60℃以下的温度下将含有至少60体积％的选自水和低级脂肪醇中的至少一种的凝固液凝固在薄溶液膜上; 干燥所得凝结的芳族聚酰胺酸膜; 并在100℃至300℃的温度下加热干燥的芳族聚酰胺酸膜，将其转化成芳族聚酰亚胺膜。
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公开(公告)号：US4528004A
公开(公告)日：1985-07-09
申请号：US574644
申请日：1984-01-30
CPC分类号： C08L79/08 , B01D69/12 , B01D71/64 , Y10T428/31721
摘要： An aromatic polyimide composite membrane having a satisfactory gas-permeating property and an excellent gas-separating property comprises an aromatic polyimide porous membrane substrate and at least one coating layer which has been prepared (A) by coating at least one surface of the substrate with a dilute dope solution containing 0.01 to 5 parts by weight of a soluble aromatic polyimide and/or polyamic acid dissolved in a solvent which consists essentially of 100 parts by weight of a base component incapable of dissolving therein the substrate in an amount of 3% by weight or more and 0 to 15 parts by weight of an additional component capable of dissolving therein the 5% by weight or more of the aromatic polymeric material and compatible with the base component; and (B) by gradually evaporating the solvent from the coated dilute dope solution layer.
摘要翻译： 具有令人满意的气体渗透性和优异的气体分离性的芳香族聚酰亚胺复合膜包括芳香族聚酰亚胺多孔膜基材和至少一个已经制备的涂层（A），通过涂布基材的至少一个表面 稀溶剂溶液，其含有溶解在溶剂中的可溶性芳族聚酰亚胺和/或聚酰胺酸0.01至5重量份，其基本上由100重量份的不能以3重量％的量溶解在基材中的基础组分 或更多且0至15重量份的能够溶解其中5重量％以上的芳族聚合物材料并与基础成分相容的附加成分; 和（B）通过从涂覆的稀释涂料溶液层中逐渐蒸发溶剂。
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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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4.发明授权
公开(公告)号：US4512893A
公开(公告)日：1985-04-23
申请号：US367954
申请日：1982-04-13
CPC分类号： C08J9/28 , B01D71/64 , C08G73/14 , C08J2379/08 , Y10S55/05
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US4474858A
公开(公告)日：1984-10-02
申请号：US393820
申请日：1982-06-30
IPC分类号： B01D53/22 , B01D61/38 , B01D71/64 , C08G73/00 , C08G73/10 , C08J9/40 , C08L79/08 , B01D59/14
CPC分类号： C08L79/08 , B01D61/38 , B01D71/64 , Y10T428/31721
摘要： An aromatic polyimide membrane having an excellent gas-separating property comprises (A) a substrate consisting of a porous membrane comprising at least one aromatic polyimide having at least 80 molar % of at least one type of recurring unit of the formula (I): ##STR1## wherein R is a tetravalent aromatic radical and R.sup.1 is a divalent aromatic radical, the porous membrane exhibiting a hydrogen gas permeability (PH.sub.2) of 1.times.10.sup.-5 to 5.times.10.sup.-1 cm.sup.3 /cm.sup.2.sec.cmHg and a ratio of hydrogen gas permeability (PH.sub.2) to carbon monoxide gas permeability (PCO) of 2 to 5; and (B) 50% or more, based on the weight of the porous membrane substrate, of a gas-separating liquid contained in the porous membrane substrate, the gas-separating liquid being substantially incapable of dissolving therein the porous membrane substrate and having a boiling point of 180.degree. C. or more.
摘要翻译： 具有优异气体分离性能的芳族聚酰亚胺膜包括（A）由包含至少一种具有至少一种式（I）的至少一种类型的重复单元的至少80摩尔％的芳族聚酰亚胺的多孔膜组成的基材： 图像（I）其中R是四价芳族基团，R 1是二价芳族基团，多孔膜的氢气透过率（PH2）为1×10-5至5×10-1 cm3 / cm2.sec.cmHg， 氢气渗透率（PH2）至一氧化碳气体渗透率（PCO）为2〜5; 和（B）基于多孔膜基材的重量为50％以上的多孔膜基材中所含的气体分离液体，所述气体分离液体基本上不能溶解在多孔膜基材中，并具有 沸点为180℃以上。
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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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公开(公告)号：US4440643A
公开(公告)日：1984-04-03
申请号：US387493
申请日：1982-06-11
IPC分类号： B32B5/18 , B01D53/22 , B01D69/12 , B01D71/64 , B05D7/04 , C08J9/28 , B01D39/00 , B01D39/14 , B05D3/02
CPC分类号： C08J9/28 , B01D69/12 , B01D71/64 , C08J2379/08 , Y10T428/31721
摘要： An aromatic polyimide composite membrane having an excellent gas-separating property is produced by a process comprising the steps of: coating at least one surface of a substrate consisting of an aromatic polyimide porous membrane with a solution of 0.05% to 10% by weight of an aromatic polyamic acid in a polar organic solvent, which is not capable of dissolving the polyimide porous membrane, at a temperature not exceeding 140.degree. C.; after a during drying the resultant thin coating layer of the polyamic acid solution, heating the resultant polyamic acid layer at a temperature of 150.degree. C. or more so as to convert the polyamic acid layer to the corresponding polyimide layer.
摘要翻译： 通过包括以下步骤的方法制备具有优异气体分离性的芳族聚酰亚胺复合膜：将由芳族聚酰亚胺多孔膜组成的基材的至少一个表面用0.05重量％至10重量％ 在不超过140℃的温度下，不能溶解聚酰亚胺多孔膜的极性有机溶剂中的芳香族聚酰胺酸。 在干燥所得聚酰胺酸溶液的薄涂层之后，在150℃或更高的温度下加热所得聚酰胺酸层，以将聚酰胺酸层转化为相应的聚酰亚胺层。
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公开(公告)号：US4378400A
公开(公告)日：1983-03-29
申请号：US278071
申请日：1981-06-29
CPC分类号： B01D71/64 , Y10T428/31721
摘要： A gas separating material having excellent heat and chemical resistance, mechanical strength and gas-separating function, comprises a gas separating layer consisting of at least one dense film having a thickness of from 0.1 to 20 microns and comprising at least one aromatic imide polymer which comprises at least 80 molar % of at least one type of recurring unit of the formula (I): ##STR1## wherein R represents a divalent aromatic radical.
摘要翻译： 具有优异的耐热和耐化学性，机械强度和气体分离功能的气体分离材料包括由至少一层厚度为0.1至20微米的致密膜组成的气体分离层，并包含至少一种芳族酰亚胺聚合物，其包含 至少一种类型的式（I）的重复单元的至少80摩尔％：其中R表示二价芳族基团。
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公开(公告)号：US4370290A
公开(公告)日：1983-01-25
申请号：US261979
申请日：1981-05-08
CPC分类号： D01F6/74 , C08G73/1067 , C08L79/08
摘要： Aromatic polyimide fibers having an enhanced mechanical strength are produced by a process comprising the steps of: preparing a spinning dope solution of at least one aromatic polyimide having 90 molar % or more of a recurring unit of the formula (I): ##STR1## wherein R is a divalent aromatic radical, in a phenolic solvent; converting the dope solution into at least one filamentary stream thereof; solidifying the filamentary dope solution stream by removing the solvent therefrom to provide at least one undrawn filament, and; drawing the undrawn filament at a temperature of 20.degree. to 600.degree. C. at a draw ratio of 1.5 to 5.0.
摘要翻译： 具有增强的机械强度的芳族聚酰亚胺纤维通过包括以下步骤的方法生产：制备至少一种具有90摩尔％或更多的式（I）的重复单元的芳族聚酰亚胺的纺丝原液：其中 R是二价芳族基团，在酚类溶剂中; 将所述掺杂溶液转化为至少一种丝状流; 通过从其中除去溶剂来固化丝状原液溶液流，以提供至少一种未拉伸的长丝， 在拉伸比为1.5〜5.0的条件下，在20〜600℃的温度下拉伸未拉伸长丝。
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公开(公告)号：US4460526A
公开(公告)日：1984-07-17
申请号：US364638
申请日：1982-04-02
摘要： Aromatic polyimide hollow fibers having an enhanced mechanical strength are produced by a process comprising the steps of: preparing a spinning dope solution of at least one aromatic polyimide having 90 molar % or more of a recurring unit of the formula (I). ##STR1## wherein R is a divalent aromatic radical, in a phenolic solvent; converting the dope solution into at least one filamentary stream thereof; and introducing the filamentary dope solution stream into a coagulating liquid having a coagulating rate coefficient of 1.5 microns/sec for the dope solution, to provide rigid hollow filaments.
摘要翻译： 具有增强的机械强度的芳族聚酰亚胺中空纤维通过包括以下步骤的方法生产：制备至少一种具有90摩尔％或更多的式（I）的重复单元的芳族聚酰亚胺的纺丝原液。 其中R是二价芳族基团，在酚类溶剂中; 将所述掺杂溶液转化为至少一种丝状流; 并将丝状原液溶液流引入凝胶溶液的凝固速率系数为1.5微米/秒的凝固液中，以提供刚性中空丝。
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