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公开(公告)号：US4859384A
公开(公告)日：1989-08-22
申请号：US205576
申请日：1988-06-13
申请人： Richard F. Fibiger , Ja-young Koo , David J. Forgach , Robert J. Petersen , Donald L. Schmidt , Ritchie A. Wessling , Thomas F. Stocker
发明人： Richard F. Fibiger , Ja-young Koo , David J. Forgach , Robert J. Petersen , Donald L. Schmidt , Ritchie A. Wessling , Thomas F. Stocker
CPC分类号： B01D69/125 , B01D71/56 , Y10S264/48 , Y10S264/62
摘要： An improved composite polyamide membrane and methods of making the membrane are described. This improved membrane is prepared using a cationic polymeric wetting agent in an aqueous solution containing a polyfunctional amine reactant which is interfacially polymerized with an acyl halide to form a thin film polyamide discriminating layer on a microporous support. Alternatively, the wetting agent can be applied directly to the substrate and the interfacial polymerization can occur on said treated substrate. The resulting membrane exhibits an unexpected combination of high water flux, high rejection of divalent anion salts, variable sodium chloride rejection and good caustic resistance at low operating pressures. In one embodiment of this invention, a porous substrate is first treated with an aqueous piperazine solution containing a copolymer of vinylbenzyl dimethyl sulfonium chloride and methacrylic acid and then the coated microporous support is contacted with trimesoyl chloride in an organic solvent.
摘要翻译： 描述了改进的复合聚酰胺膜和制造膜的方法。 这种改进的膜是使用阳离子聚合物润湿剂在含有多官能胺反应物的水溶液中制备的，该反应物与酰基卤进行界面聚合以在微孔载体上形成薄膜聚酰胺鉴别层。 或者，润湿剂可以直接施加到基底上，并且界面聚合可以发生在所述经处理的基底上。 所得膜在低操作压力下表现出高水通量，二价阴离子盐的高排斥性，可变的氯化钠排除和良好的耐碱性的意想不到的组合。 在本发明的一个实施方案中，首先用含有乙烯基苄基二甲基氯化锍和甲基丙烯酸的共聚物的哌嗪水溶液处理多孔基材，然后将涂覆的微孔载体与均苯三甲酰氯在有机溶剂中接触。
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公开(公告)号：US4769148A
公开(公告)日：1988-09-06
申请号：US122307
申请日：1987-11-18
申请人： Richard F. Fibiger , Ja-young Koo , David J. Forgach , Robert J. Petersen , Donald L. Schmidt , Ritchie A. Wessling , Thomas F. Stocker
发明人： Richard F. Fibiger , Ja-young Koo , David J. Forgach , Robert J. Petersen , Donald L. Schmidt , Ritchie A. Wessling , Thomas F. Stocker
CPC分类号： B01D69/125 , B01D71/56
摘要： An improved composite polyamide membrane and methods of making the membrane are described. This improved membrane is prepared using a cationic polymeric wetting agent in an aqueous solution containing a polyfunctional amine reactant which is interfacially polymerized with an acyl halide to form a thin film polyamide discriminating layer on a microporous support. Alternatively, the wetting agent can be applied directly to the substrate and the interfacial polymerization can occur on said treated substrate. The resulting membrane exhibits an unexpected combination of high water flux, high rejection of divalent anion salts, variable sodium chloride rejection and good caustic resistance at low operating pressures. In one embodiment of this invention, a porous substrate is first treated with an aqueous piperazine solution containing a copolymer of vinylbenzyl dimethyl sulfonium chloride and methacrylic acid and then the coated microporous support is contacted with trimesoyl chloride in an organic solvent.
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公开(公告)号：US4894165A
公开(公告)日：1990-01-16
申请号：US348928
申请日：1989-05-08
申请人： Richard F. Fibiger , Michael J. Colucci , David J. Forgach , Ritchie A. Wessling , Donald L. Schmidt
发明人： Richard F. Fibiger , Michael J. Colucci , David J. Forgach , Ritchie A. Wessling , Donald L. Schmidt
IPC分类号： B01D67/00
CPC分类号： B01D67/0088
摘要： Reverse osmosis membranes treated with polymers bearing carboxylic acid groups and optionally pendant hydroxyl or amide moieties display enhanced salt rejection and/or increased water flux. This treatment is particularly useful for improving the membrane characteristics of cellulose acetate and polyamide membranes.
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公开(公告)号：US4909943A
公开(公告)日：1990-03-20
申请号：US348930
申请日：1989-05-08
申请人： Richard F. Fibiger , Michael J. Colucci , David J. Forgach , Ritchie A. Wessling , Donald L. Schmidt
发明人： Richard F. Fibiger , Michael J. Colucci , David J. Forgach , Ritchie A. Wessling , Donald L. Schmidt
IPC分类号： B01D67/00
CPC分类号： B01D67/0088
摘要： Reverse osmosis membranes treated with polymers bearing carboxylic acid groups and optionally pendant hydroxyl or amide moieties display enhanced salt rejection and/or increased water flux. This treatment is particularly useful for improving the membrane characteristics of cellulose acetate and polyamide membranes.
摘要翻译： 用含有羧酸基团和任选的侧基羟基或酰胺部分的聚合物处理的反渗透膜显示增强的盐排斥和/或增加的水通量。 这种处理对于改善醋酸纤维素和聚酰胺膜的膜特性是特别有用的。
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公开(公告)号：US4828700A
公开(公告)日：1989-05-09
申请号：US162824
申请日：1988-03-02
申请人： Richard F. Fibiger , Michael J. Colucci , David J. Forgach , Ritchie A. Wessling , Donald L. Schmidt
发明人： Richard F. Fibiger , Michael J. Colucci , David J. Forgach , Ritchie A. Wessling , Donald L. Schmidt
CPC分类号： B01D67/0088
摘要： Reverse osmosis membranes treated with polymers bearing carboxylic acid groups and optionally pendant hydroxyl or amide moieties display enhanced salt rejection and/or increased water flux. This treatment is particularly useful for improving the membrane characteristics of cellulose acetate and polyamide membranes.
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6.发明授权Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups 失效通过阳离子基团与亲核基团反应制备的半透膜
公开(公告)号：US4704324A
公开(公告)日：1987-11-03
申请号：US790287
申请日：1985-10-22
申请人： Thomas E. Davis , Donald L. Schmidt , Jee I. Kau , Ritchie A. Wessling , Sharon S. Whipple , Richard F. Fibiger , Dale M. Pickelman
发明人： Thomas E. Davis , Donald L. Schmidt , Jee I. Kau , Ritchie A. Wessling , Sharon S. Whipple , Richard F. Fibiger , Dale M. Pickelman
IPC分类号： C08J5/22 , B01D20060101 , B01D67/00 , B01D69/02 , B01D69/08 , B01D69/12 , B01D69/14 , B01D71/40 , B01D71/44 , B01D71/46 , B01D71/52 , B01D71/68 , B01D71/72 , B01D71/80 , B01D71/82 , B32B5/00 , B01D13/00
CPC分类号： B01D67/0088 , B01D67/0093 , B01D69/08 , B01D69/125 , B01D69/14 , B01D71/40 , B01D71/44 , B01D71/46 , B01D71/52 , B01D71/68 , B01D71/72 , B01D71/80 , B01D71/82 , B01D2323/30 , Y10T428/249953 , Y10T428/249958 , Y10T428/249965 , Y10T428/249972 , Y10T428/249978
摘要： A novel composite membrane and methods of making the membrane are described. The discriminating layer of the membrane is prepared by reaction of a reactive cationic compound group with a compound bearing a nucleophilic moiety. At least one of the reactants bears an average of two or more reactive groups. The reaction product contains covalent bonds formed via charge eliminating reactions.In a preferred embodiment of the invention, the nucleophilic group is anionic and a coacervate is formed initially on a microporous substrate. The resulting membrane may be useful for reverse osmosis, gas or ultrafiltration separations.
摘要翻译： 描述了一种新型复合膜及其制备方法。 膜的鉴别层通过反应性阳离子化合物基团与带有亲核部分的化合物的反应来制备。 至少一种反应物平均具有两个或更多个反应性基团。 反应产物含有通过电荷消除反应形成的共价键。 在本发明的优选实施方案中，亲核基团是阴离子的，并且最初在微孔基材上形成凝聚层。 所得的膜可用于反渗透，气体或超滤分离。
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7.发明授权
公开(公告)号：US4797187A
公开(公告)日：1989-01-10
申请号：US86123
申请日：1987-08-17
申请人： Thomas E. Davis , Donald L. Schmidt , Jee I. Kau , Ritchie A. Wessling , Sharon S. Whipple , Richard F. Fibiger , Dale M. Pickelman
发明人： Thomas E. Davis , Donald L. Schmidt , Jee I. Kau , Ritchie A. Wessling , Sharon S. Whipple , Richard F. Fibiger , Dale M. Pickelman
IPC分类号： C08J5/22 , B01D20060101 , B01D67/00 , B01D69/02 , B01D69/08 , B01D69/12 , B01D69/14 , B01D71/40 , B01D71/44 , B01D71/46 , B01D71/52 , B01D71/68 , B01D71/72 , B01D71/80 , B01D71/82 , C05B7/00
CPC分类号： B01D67/0088 , B01D67/0093 , B01D69/08 , B01D69/125 , B01D69/14 , B01D71/40 , B01D71/44 , B01D71/46 , B01D71/52 , B01D71/68 , B01D71/72 , B01D71/80 , B01D71/82 , B01D2323/30 , Y10T428/249953 , Y10T428/249958 , Y10T428/249965 , Y10T428/249972 , Y10T428/249978
摘要： A novel composite membrane and methods of making the membrane are described. The discriminating layer of the membrane is prepared by reaction of a reactive cationic compound group with a compound bearing a nucleophilic moiety. At least one of the reactants bears an average of two or more reactive groups. The reaction product contains covalent bonds formed via charge eliminating reactions.In a preferred embodiment of the invention, the nucleophilic group is anionic and a coacervate is formed initially on a microporous substrate. The resulting membrane may be useful for reverse osmosis, gas or ultrafiltration separations.
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8.发明授权Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups 失效通过阳离子基团与亲核基团反应制备的半透膜
公开(公告)号：US4839203A
公开(公告)日：1989-06-13
申请号：US86122
申请日：1987-08-17
申请人： Thomas E. Davis , Donald L. Schmidt , Jee I. Kau , Ritchie A. Wessling , Sharon S. Whipple , Richard F. Fibiger , Dale M. Pickelman
发明人： Thomas E. Davis , Donald L. Schmidt , Jee I. Kau , Ritchie A. Wessling , Sharon S. Whipple , Richard F. Fibiger , Dale M. Pickelman
IPC分类号： B01D67/00 , B01D69/08 , B01D69/12 , B01D69/14 , B01D71/40 , B01D71/44 , B01D71/46 , B01D71/52 , B01D71/68 , B01D71/72 , B01D71/80 , B01D71/82
CPC分类号： B01D67/0088 , B01D67/0093 , B01D69/08 , B01D69/125 , B01D69/14 , B01D71/40 , B01D71/44 , B01D71/46 , B01D71/52 , B01D71/68 , B01D71/72 , B01D71/80 , B01D71/82 , B01D2323/30
摘要： A novel composite membrane and methods of making the membrane are described. The discriminating layer of the membrane is prepared by reaction of a reactive cationic compound group with a compound bearing a nucleophilic moiety. At least one of the reactants bears an average of two or more reactive groups. The reaction product contains covalent bonds formed via charge eliminating reactions.In a preferred embodiment of the invention, the nucleophilic group is anionic and a coacervate is formed initially on a microporous substrate. The resulting membrane may be useful for reverse osmosis, gas or ultrafiltration separations.
摘要翻译： 描述了一种新型复合膜及其制备方法。 膜的鉴别层通过反应性阳离子化合物基团与带有亲核部分的化合物的反应来制备。 至少一种反应物平均具有两个或更多个反应性基团。 反应产物含有通过电荷消除反应形成的共价键。 在本发明的优选实施方案中，亲核基团是阴离子的，并且最初在微孔基材上形成凝聚层。 所得的膜可用于反渗透，气体或超滤分离。
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公开(公告)号：US4992485A
公开(公告)日：1991-02-12
申请号：US255220
申请日：1988-10-11
IPC分类号： B01D71/52 , B29C67/06 , B29C70/06 , B29K71/00 , B29K105/04 , B29K105/08 , B29L31/14 , C08J5/18 , C08J9/28 , D01D5/24 , D01F6/76 , D01F6/78
CPC分类号： C08J9/28 , B01D71/52 , D01D5/24 , C08J2371/00 , Y10T428/24504
摘要： A microporous polyetheretherketone (PEEK) membrane in the form of films and hollow fibers formed without sulfonating the PEEK polymer. Solid fibers and articles are also claimed. A method of making membranes, fibers and articles from solutions of PEEK in non-sulfonating acid solvents in claimed. Solvents include methane sulfonic acid and trifluoromethane sulfonic acid. Sulfuric acid may be used as a diluent in non-sulfonating amounts. PEEK membranes are used as supports for composite ultrafiltration and reverse osmosis membranes. A method of making membranes, fibers, and articles is also described.
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公开(公告)号：US4927540A
公开(公告)日：1990-05-22
申请号：US185323
申请日：1988-04-19
CPC分类号： B01D67/0088 , B01D67/0093 , B01D69/125 , B01D71/80
摘要： A reverse osmosis membrane bearing an ionic complex and a method of making the membrane is described. The ionic complex is formed from a first compound bearing at least one quaternary ammonium or pyridinium group and a second compound bearing at least one sulfonate or carboxylate group. The complex enhances solute rejection of the membrane.
摘要翻译： 描述了带有离子络合物的反渗透膜和制造膜的方法。 离子络合物由具有至少一个季铵或吡啶鎓基团的第一化合物和带有至少一个磺酸盐或羧酸盐基团的第二化合物形成。 复合物增强膜的溶质排斥。
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