-
公开(公告)号：US5042993A
公开(公告)日：1991-08-27
申请号：US557271
申请日：1990-07-24
申请人： Ingrid K. Meier , Michael Langsam
发明人： Ingrid K. Meier , Michael Langsam
CPC分类号： B01D67/0093 , B01D71/64 , C08J7/12 , C08J2379/08
摘要： The present invention is a class of semi-permeable polyimide membranes and a process for using such membranes to separate one or more components of a gaseous mixture. The membranes are prepared from a polyimide having surface-modifiable functionalities comprising repeating units formed from an aromatic dianhydride and an alkyl-substituted phenylenediamine having at least one hydrogen atom located on a ring position ortho to an amine nitrogen. The membranes formed therefrom are contacted in the presence of an oxygen source with an activating force such as high energy electromagnetic irradiation to effect modification of the polymer surface. The surface-modified polyimide membranes exhibit high gas perm-selectivities and are especially useful in effecting the separation of oxygen and nitrogen from air.
摘要翻译： 本发明是一类半渗透性聚酰亚胺膜和使用这种膜分离气态混合物的一种或多种组分的方法。 膜由具有表面改性官能团的聚酰亚胺制备，所述官能团包含由芳族二酐形成的重复单元和具有至少一个位于胺氮邻位置上的氢原子的烷基取代苯二胺。 由此形成的膜在氧源的存在下与诸如高能电磁照射的活化力接触，以实现聚合物表面的改性。 表面改性的聚酰亚胺膜表现出高的气体选择性，并且特别可用于实现氧和氮与空气的分离。
-
2.发明授权Alkylated 1,1-bis(4-aminophenyl)-1-phenyl-2,2,2-trifluoroethanes 失效烷基化的1,1-双（4-氨基苯基）-1-苯基-2,2,2-三氟乙烷
公开(公告)号：US4990667A
公开(公告)日：1991-02-05
申请号：US471916
申请日：1990-01-29
IPC分类号： B01D71/64 , C07C211/52 , C08G73/10
CPC分类号： C07C211/52 , B01D71/64 , C08G73/1039
摘要： Diamine compounds having the structural formula: ##STR1## wherein R.sup.1 and R.sup.2 are independently methyl, ethyl or isopropyl groups, can be used in preparing various polymers which are useful in gas separation membranes. The combined effect of alkyl substituents ortho to the amino groups along with the specific bridging group imparts useful properties to polymeric membranes formed with these diamines.
摘要翻译： 具有以下结构式的二胺化合物：其中R 1和R 2独立地为甲基，乙基或异丙基，可用于制备可用于气体分离膜的各种聚合物。 氨基与烷基取代基与特异性桥连基团的组合效应赋予了与这些二胺形成的聚合物膜有用的性质。
-
公开(公告)号：US4954144A
公开(公告)日：1990-09-04
申请号：US406225
申请日：1989-09-12
CPC分类号： C08G73/1067 , B01D71/64 , C08G73/1039 , C08G73/1064 , C08G73/1078
摘要： The present invention is a class of polyimide membranes wherein the diamine portion of the polymer structure is formed from 2,5-di-t-butyl-1,4-phenylenediamine. Membranes formed from polyimides containing this diamine structure exhibit unexpectedly high gas permeability properties and are especially useful for separating oxygen from nitrogen or air.
-
公开(公告)号：US4859215A
公开(公告)日：1989-08-22
申请号：US144295
申请日：1988-05-02
CPC分类号： B01D67/0088 , B01D67/0011 , B01D71/44 , B01D2323/12 , B01D2325/34
摘要： The present invention is a modified polymeric membrane having improved selectivity for separating gas mixtures. The membrane comprises a silyl substituted polyacetylene polymer to which has been added 5 to 50 wt. % of an additive which is miscible with the polymer, has a boiling point >300.degree. C. at atmospheric pressure, is soluble in a common solvent for the polymer and increases the selectivity ratio of O.sub.2 /N.sub.2 by at least 15% over the polymer without the additive.
摘要翻译： 本发明是具有改进的分离气体混合物选择性的改性聚合物膜。 该膜包括甲硅烷基取代的聚乙炔聚合物，向其中加入5至50wt。 与聚合物可混溶的添加剂的％，在大气压下沸点> 300℃，可溶于聚合物的常用溶剂中，并且使O 2 / N 2的选择比比聚合物提高至少15％ 没有添加剂。
-
5.发明授权
公开(公告)号：US4835229A
公开(公告)日：1989-05-30
申请号：US187803
申请日：1988-04-29
申请人： Michael Langsam
发明人： Michael Langsam
摘要： Polymeric tri-substituted silylalkynes useful for forming gas separation membranes are prepared at accelerated polymerization rates and increased molecular weights by employing at polymerization temperatures a binary catalyst system of Group VB or VIB metal halide such as TaCl.sub.5 and a tertiary amine compound such as pyridine in an aromatic solvent.
摘要翻译： 用于形成气体分离膜的聚合三取代的甲硅烷基炔烃通过在聚合温度下使用VB族或VIB金属卤化物的二元催化剂体系如TaCl 5和叔胺化合物如吡啶在加速聚合速率和增加的分子量下制备， 芳香族溶剂。
-
公开(公告)号：US06187248B1
公开(公告)日：2001-02-13
申请号：US09196452
申请日：1998-11-19
IPC分类号： B29C3508
CPC分类号： H01L21/02118 , C08J9/28 , C08J2201/0502 , C08J2201/0542 , H01B3/306 , H01B3/42 , H01B3/427 , H01B3/442 , H01L21/02203 , H01L21/02282 , H01L21/312 , H01L21/31695
摘要： A process for producing a nanoporous polymer film of no greater than 10 micron thickness having low dielectric constant value, including the steps of: (a) providing a polymer in a solution with at least two solvents for the polymer in which a lowest boiling solvent and a highest boiling solvent have a difference in their respective boiling points of approximately 50° C. or greater; (b) forming a film of the polymer in solution with at least the two solvents on a substrate; (c) removing a predominant amount of the lowest boiling solvent; (d) contacting the film with a fluid which is a non-solvent for the polymer, but which is miscible with the at least two solvents to induce phase inversion in the film; (e) forming an average pore size in the film in the range of less than 30 nanometers. The present invention is also nanoporous films made by the above process.
摘要翻译： 一种用于制备具有低介电常数值的不大于10微米厚度的纳米多孔聚合物膜的方法，包括以下步骤：（a）在聚合物中提供聚合物至少两种溶剂，其中最低沸点溶剂和 最高沸点溶剂的沸点相差约为50℃以上; （b）在基材上用至少两种溶剂在溶液中形成聚合物膜; （c）除去主要量的最低沸点溶剂; （d）使膜与用于聚合物的非溶剂的流体接触，但与至少两种溶剂可混溶以在膜中诱导相转化; （e）在小于30纳米的范围内形成膜中的平均孔径。本发明还是通过上述方法制备的纳米多孔膜。
-
公开(公告)号：US5939520A
公开(公告)日：1999-08-17
申请号：US924729
申请日：1997-09-05
申请人： Michael Langsam
发明人： Michael Langsam
CPC分类号： B01D71/64 , B01D53/228 , C08G73/14 , Y10T428/31504 , Y10T428/31721
摘要： Regiospecific polyamide-imides are cast to form membranes which exhibit superior gas separation properties when compared to polyamide-imide membranes formed from random copolymers. The regiospecific polyamide-imides are synthesized by reacting specific aromatic diimide dicarboxylic acids with select aromatic diamines.
摘要翻译： 与由无规共聚物形成的聚酰胺 - 酰亚胺膜相比，将区域特异性聚酰胺 - 酰亚胺浇铸成形成具有优异气体分离性能的膜。 区域特异性聚酰胺 - 酰亚胺通过使特定芳族二酰亚胺二羧酸与选择性芳族二胺反应合成。
-
公开(公告)号：US5061298A
公开(公告)日：1991-10-29
申请号：US537171
申请日：1990-06-13
CPC分类号： B01D67/0093 , B01D71/64 , C01B13/0255 , C01B21/0444 , C08L79/08 , C01B2210/0046
摘要： The present invention is a class of semi-permeable polymeric membranes and processes for using such membranes to separate one or more components of a gas mixture. The membranes which are formed from a polymer blend of a first polyimide containing an aromatic diamine and a second polyimide containing an alkenylated diamine having an allyl or allylaryl group exhibit high gas perm-selectivities. The polyimide blends can be surface modified by treatment with an activating force such as high energy electromagnetic irradiation or with a free radical source to impart enhanced selectivity to the membrane without causing a large decrease in composite permeance. These membranes formed from polyimide blends are especially useful in effecting the separation of oxygen and nitrogen from air.
摘要翻译： 本发明是一类半透性聚合物膜和使用这种膜分离气体混合物的一种或多种组分的方法。 由包含芳族二胺的第一聚酰亚胺和含有具有烯丙基或烯丙基芳基的烯基化二胺的第二聚酰亚胺的聚合物共混物形成的膜显示出高的气体选择性。 聚酰亚胺共混物可以通过用诸如高能电磁照射的激活剂处理或用自由基源进行表面改性，以赋予膜增强的选择性，而不会导致复合渗透性的大幅度降低。 由聚酰亚胺共混物形成的这些膜特别适用于从空气中分离氧和氮。
-
9.发明授权Process for controlling the molecular weight of poly(trialkylsilylpropyne) polymers 失效控制聚（三烷基甲硅烷基丙炔）聚合物分子量的方法
公开(公告)号：US4808679A
公开(公告)日：1989-02-28
申请号：US145854
申请日：1988-01-19
申请人： Michael Langsam
发明人： Michael Langsam
CPC分类号： C08F38/00
摘要： The present invention is a process for polymerizing trialkylsilylacetylene derived monomers to form the corresponding poly(trialkylsilylacetylene) polymer. The polymerization reaction is carried out in the presence of an organic solvent over a catalyst comprising a halide of a transition metal of group Vb or VIb. The molecular weight of the resultant polymer is decreased by adding to the reaction mixture, in a concentration between about 0.5-25 wt. %, a compound having the structural formula ##STR1## wherein each R is independently methyl, C.sub.2-4 alkyl or phenyl, and n is from 1 to 100.
-
公开(公告)号：US5055616A
公开(公告)日：1991-10-08
申请号：US472001
申请日：1990-01-29
IPC分类号： C07C211/50
CPC分类号： C07C211/50 , C07C2103/18
摘要： Diamine compounds having the structural formula: ##STR1## wherein R.sub.1 is a methyl or ethyl group, can be used in preparing various polymers which are useful components in gas separation membranes. The combined effect of specific substituents ortho to the amino groups and the fluorenylidene bridging group imparts useful properties to polymeric membranes formed with these monomers.
摘要翻译： 具有以下结构式的二胺化合物：其中R1是甲基或乙基，可用于制备作为气体分离膜中有用组分的各种聚合物。 与氨基和亚芴基桥连基团相邻的特定取代基的组合效应赋予与这些单体形成的聚合物膜有用的性质。
-
-
-
-
-
-
-
-
-
搜索结果
20 条记录 (耗时 0.017 秒)
