-
21.发明授权Partially carbonized asymmetric hollow fiber separation membrane, process for its production, and gas separation method 失效部分碳化不对称中空纤维分离膜，其生产工艺及气体分离方法公开(公告)号：US06395066B1
公开(公告)日：2002-05-28
申请号：US09511407
申请日：2000-02-23
申请人： Nozomu Tanihara , Yoshihiro Kusuki
发明人： Nozomu Tanihara , Yoshihiro Kusuki
IPC分类号： B01D5322
CPC分类号： B01D69/02 , B01D53/22 , B01D63/02 , B01D63/021 , B01D67/0067 , B01D69/08 , B01D71/021 , B01D71/64 , B01D2325/04 , D01F9/24
摘要： A partially carbonized asymmetric hollow fiber separation membrane which is a hollow fiber separation membrane having an asymmetric structure obtained by partial carbonization of an aromatic polyimide hollow fiber separation membrane with an asymmetric structure, wherein the thickness of the aromatic polyimide hollow fiber membrane to be partially carbonized is 8-50 &mgr;m, the thickness of the hollow fiber separation membrane obtained by the carbonization is 8-45 &mgr;m, and the carbon content of the hollow fiber membrane obtained by partial carbonization is at least 1.05 times the carbon content of the aromatic polyimide hollow fiber membrane to be partially carbonized, and no greater than 90 wt %; also, a process for its production and a gas separation method employing it.
摘要翻译： 一种部分碳化的不对称中空纤维分离膜，其是具有不对称结构的中空纤维分离膜，其通过不对称结构的芳族聚酰亚胺中空纤维分离膜的部分碳化获得，其中芳族聚酰亚胺中空纤维膜的厚度被部分碳化 为8〜50μm，通过碳化获得的中空丝分离膜的厚度为8-45μm，通过部分碳化获得的中空纤维膜的碳含量为芳族聚酰亚胺中空体的碳含量的至少1.05倍 纤维膜部分碳化，不大于90重量％; 也是其生产方法和采用它的气体分离方法。
-
公开(公告)号：US4830640A
公开(公告)日：1989-05-16
申请号：US21654
申请日：1987-03-04
IPC分类号： B01D53/22 , B01D69/08 , B01D71/52 , B01D71/64 , B01D71/82 , C08G73/00 , C08G73/08 , C08G73/10 , C08L79/08 , C08L81/00 , D01D5/24 , D01F6/74
CPC分类号： C08G73/1067 , B01D69/08 , B01D71/64 , C08G73/1042 , C08G73/105 , C08G73/1071 , D01D5/24
摘要： An aromatic imide polymer hollow filament having an excellent gas separating property is produced by a process comprising the steps of:(1) dissolving an aromatic imide copolymer comprising (A) 20 to 85 molar % of recurring units of the formula (I): ##STR1## (B) 10 to 35 molar % of recurring units of the formula (II): ##STR2## and (C) 5 to 55 molar % of recurring units of the formula (III): ##STR3## wherein R represents a divalent radical of the formula (IV) or (V): ##STR4## and ##STR5## wherein R.sup.1 and R.sup.2 respectively represent, a hydrogen atom, alkoxyl radical having 1 to 3 carbon atoms or alkyl radical having 1 to 3 carbon atoms, in a solvent consisting essentially of at least one phenolic compound to provide a spinning dope solution;(2) extruding the dope solution through a spinneret having at least one hollow filament spinning orifice, to provide at least one hollow filamentary stream of the dope solution, and(3) introducing the dope solution hollow stream into a coagulating bath comprising at least one polar solvent which is compatible with the phenolic compound but not capable of dissolving the aromatic imide copolymer, to solidify the hollow stream into a hollow filament.
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能的芳族酰亚胺聚合物中空丝：（1）将包含（A）20-85摩尔％的式（I）的重复单元的芳族酰亚胺共聚物溶解： （I）（B）10至35摩尔％的式（II）的重复单元：（II）和（C）5至55摩尔％的式（III）的重复单元：
-
23.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。
-
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。
-
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。
-
-
-
-
搜索结果
25 条记录 (耗时 0.022 秒)