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.

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

IPC分类号： B01D69/12 ,  B01D71/56

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。

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。

公开(公告)号：US5162225A

公开(公告)日：1992-11-10

申请号：US729663

申请日：1991-07-15

申请人： Bill C. Sager ,  Melvin Rothberg ,  Roger B. Hornby ,  Jeffrey D. Michalowski ,  David J. Forgach ,  Gordon E. Fleig

发明人： Bill C. Sager ,  Melvin Rothberg ,  Roger B. Hornby ,  Jeffrey D. Michalowski ,  David J. Forgach ,  Gordon E. Fleig

IPC分类号： C12M3/02 ,  C12N5/00

CPC分类号： C12N5/0075 ,  C12M25/10 ,  C12N2533/78

摘要： Hollow fiber structures for culturing mammalian cells in an agitated media are disclosed. These hollow fibers have a cylindrical wall surrounding a lumen preferably open at opposite ends of the fiber and have a length along the axis parallel to the lumen of not more than 5 centimeters. Hollow fiber structures which have their exterior surface coated to prevent cell attachment and growth thereon are also disclosed.

摘要翻译： 公开了用于在搅拌介质中培养哺乳动物细胞的中空纤维结构。 这些中空纤维具有围绕内腔的圆柱形壁，优选地在纤维的相对端处开口，并且沿着平行于内腔的轴线的长度不大于5厘米。 还公开了具有外表面涂覆以防止细胞附着和生长的中空纤维结构。

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

IPC分类号： C09D133/02 ,  B01D67/00 ,  B01D71/16 ,  B01D71/38 ,  B01D71/40 ,  B01D71/82

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.

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

IPC分类号： C08G69/00 ,  B01D69/12 ,  B01D71/56 ,  B01D13/00

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.

公开(公告)号：US5580650A

公开(公告)日：1996-12-03

申请号：US492267

申请日：1995-06-19

申请人： David J. Forgach ,  J. Keith Harris ,  Paul G. Glugla ,  Donald L. Schmidt ,  Richard F. Fibiger

发明人： David J. Forgach ,  J. Keith Harris ,  Paul G. Glugla ,  Donald L. Schmidt ,  Richard F. Fibiger

IPC分类号： B01D69/12 ,  G03F7/038 ,  G03F7/039 ,  B32B3/26

CPC分类号： G03F7/038 ,  B01D69/125 ,  G03F7/039 ,  Y10T428/249953 ,  Y10T428/265 ,  Y10T428/269 ,  Y10T428/31504

摘要： A process is disclosed for the formation of a high flux composite membrane having a thin discriminating film affixed to a porous support layer through a glue layer. The process comprises the formation of the discriminating film by irradiating an aqueous polymer solution in the substantial absence of drying and under conditions which are sufficient to form a polymer film on the surface of the polymer solution at the interphase of the solution and a blanketing fluid. The film is then affixed to the support through the glue layer which may be the same polymer solution from which the discriminating film is formed.

摘要翻译： 公开了一种用于形成具有通过胶层固定到多孔支撑层的薄鉴别膜的高通量复合膜的方法。 该方法包括通过在基本不存在干燥的情况下照射聚合物水溶液并在足以在溶液的相间的聚合物溶液的表面上形成聚合物膜的条件和覆盖流体来形成鉴别膜。 然后将膜通过胶层固定到支撑体上，该胶层可以是形成识别膜的聚合物溶液。