公开(公告)号：US5271843A

公开(公告)日：1993-12-21

申请号：US756635

申请日：1991-09-09

申请人： Michael M. Chau ,  William G. Light ,  A. Xavier Swamikannu

发明人： Michael M. Chau ,  William G. Light ,  A. Xavier Swamikannu

IPC分类号： B01D69/12 ,  B01D61/02

CPC分类号： B01D69/125

摘要： A semipermeable membrane suitable for reverse osmosis applications is prepared by interfacially reacting on a support an aromatic polyamine containing at least three and, preferably, four aromatic nuclei with a polyfunctional amine-reactive compound such as an aromatic polyacyl halide.

摘要翻译： 适用于反渗透应用的半透膜通过在支撑物上使含有至少三个且优选四个芳香核的芳族多胺与多官能胺反应性化合物如芳族聚酰卤反应而制备。

公开(公告)号：US4932986A

公开(公告)日：1990-06-12

申请号：US349003

申请日：1989-05-09

申请人： Sudhir S. Kulkarni ,  Stephen F. Yates ,  A. Xavier Swamikannu

发明人： Sudhir S. Kulkarni ,  Stephen F. Yates ,  A. Xavier Swamikannu

IPC分类号： B01D67/00 ,  B01D71/16 ,  C08B15/00

CPC分类号： B01D67/0093 ,  B01D71/16 ,  C08B15/005 ,  B01D2323/30

摘要： Membranes which are used for the separation of gases comprise cellulose acetate membranes which have been crosslinked with an organic titanate. The membranes are prepared by solvent exchanging a cellulose acetate membrane through a series of baths of decreasing polarity followed by treating the membrane with a crosslinking agent comprising an organic titanate in an organic solvent solution which possesses a relatively low polarity. The resulting membranes will retain the original excellent separation characteristics while concomitantly possessing greater temperature and pressure stability and flux characteristics.

摘要翻译： 用于分离气体的膜包括已经与有机钛酸酯交联的乙酸纤维素膜。 通过使乙酸纤维素膜通过一系列降低极性的浴进行溶剂交换来制备膜，然后用含有相对低极性的有机溶剂溶液中的有机钛酸酯的交联剂处理膜。 所得到的膜将保持原来优异的分离特性，同时具有更大的温度和压力稳定性和通量特性。

公开(公告)号：US4880545A

公开(公告)日：1989-11-14

申请号：US272971

申请日：1988-11-18

申请人： A. Xavier Swamikannu

发明人： A. Xavier Swamikannu

IPC分类号： B01D69/12 ,  C13K1/04

CPC分类号： B01D69/125 ,  C13K1/04

摘要： Ultra-filtration membranes which may be utilized in a separation process such as the separation of monosaccharides and disaccharides from a mixture of mono- di- and higher polysaccharides will comprise an interfacial polymerized condensation product of the reaction between a polymeric amine produced from the reaction of a polyepihalohydrin and a primary amine containing a hydroxy, alkoxy, or carboxylic radical and a compound selected from the group consisting of aromatic polycarboxylic acid chlorides, alicyclic polycarboxylic acid chlorides, aliphatic polycarboxylic acid chlorides, aromatic polycarboxylic anhydrides and aromatic diisocyanates composited on a porous support bacing material.

摘要翻译： 可用于分离过程（例如从单 - 和多 - 多糖的混合物中分离单糖和二糖）的超滤膜将包括由下列反应产生的聚合胺之间的反应的界面聚合缩合产物： 一种含有羟基，烷氧基或羧基的伯胺和选自芳族多元羧酸氯化物，脂环族多元羧酸氯化物，脂肪族多元羧酸氯化物，芳族多元羧酸酐和芳香族二异氰酸酯的化合物组合在多孔载体上的化合物 搭配材料

公开(公告)号：US5436296A

公开(公告)日：1995-07-25

申请号：US220952

申请日：1994-03-31

申请人： A. Xavier Swamikannu ,  Murali K. Akkapeddi

发明人： A. Xavier Swamikannu ,  Murali K. Akkapeddi

IPC分类号： C08L67/02

CPC分类号： C08L67/02

摘要： Compositions comprising polyalkylene terephthalate, polyethylene and a compatibilizer copolymer of a C.sub.2 -C.sub.10 alpha-olefin and a glycidyl or isocyanate group-containing functional compound, wherein the functional compound comprises about 0.4 to about 50 weight percent of the compatibilizer copolymer, provide improved impact properties and heat resistance. The compositions feature improved compatibility of polyalkylene terephthalate and polyethylene, and are useful in forming a wide variety of articles therefrom.

摘要翻译： 包含聚对苯二甲酸亚烷基酯，聚乙烯和C 2 -C 10α-烯烃与含缩水甘油基或异氰酸酯基的官能化合物的增容剂共聚物的组合物，其中所述官能化合物包含约0.4至约50重量％的增容剂共聚物，提供改善的冲击性能 和耐热性。 组合物具有改善的聚对苯二甲酸亚烷基酯和聚乙烯的相容性，并且可用于形成各种各样的制品。

公开(公告)号：US5145584A

公开(公告)日：1992-09-08

申请号：US785847

申请日：1991-10-31

申请人： A. Xavier Swamikannu

发明人： A. Xavier Swamikannu

IPC分类号： B01D69/12 ,  B01D71/80

CPC分类号： B01D71/80 ,  B01D69/12

摘要： Processes for using a thin film ultrafiltration membrane for the separation of low molecular weight solutes such as the separation of glucose from sucrose and higher molecular weight sugars and the separation of amino acids from oligopeptides and polypeptides. The membrane possesses desirable properties or characteristics, and may be prepared by casting a solution of a polyelectrolyte complex on a microporous support to form a thin film of polyelectrolyte complex on the surface of the support. The thickness of the membrane will range from about 600 to 3,000 A.

摘要翻译： 使用薄膜超滤膜分离低分子量溶质的方法，例如葡萄糖与蔗糖和较高分子量糖的分离以及氨基酸与寡肽和多肽的分离。 膜具有期望的性质或特性，并且可以通过将聚电解质复合物的溶液浇铸在微孔载体上以在载体的表面上形成聚电解质络合物的薄膜来制备。 膜的厚度范围为约600至3,000。

公开(公告)号：US5085775A

公开(公告)日：1992-02-04

申请号：US622564

申请日：1990-12-05

申请人： A. Xavier Swamikannu

发明人： A. Xavier Swamikannu

IPC分类号： B01D71/82 ,  B01D69/12 ,  B01D71/80 ,  B32B5/18 ,  C07H1/06 ,  C07H3/02

CPC分类号： B01D69/12 ,  B01D71/80

摘要： Thin film composite ultrafiltration membrane which possesses desirable properties or characteristics may be prepared by casting a solution of a polyelectrolyte complex on a microporous support to form a thin film of the polyelectrolyte complex on the surface of the supports. The thickness of the polyelectrolyte complex membrane will range from about 600 to about 3,000 .ANG.. This membrane may then be used for the separation of low molecular weight solutes such as, for example, the separation of glucose from sucrose and higher molecular weight sugars.

摘要翻译： 具有所需性质或特性的薄膜复合超滤膜可以通过在微孔载体上浇铸聚电解质络合物的溶液以在载体表面上形成聚电解质络合物的薄膜来制备。 聚电解质复合膜的厚度范围为约600至约3,000安培。 然后可以将该膜用于分离低分子量溶质，例如葡萄糖与蔗糖和较高分子量糖的分离。

公开(公告)号：US5013448A

公开(公告)日：1991-05-07

申请号：US482445

申请日：1990-02-20

申请人： A. Xavier Swamikannu

发明人： A. Xavier Swamikannu

IPC分类号： B01D69/12 ,  B01D71/40 ,  C08F8/14 ,  C08L33/02 ,  C08L33/14

CPC分类号： C08F8/14 ,  B01D69/125 ,  B01D71/40 ,  C08L33/02 ,  C08L33/14

摘要： Semipermeable membranes comprising polyesters which are resistant to chlorine are prepared by casting on a porous support backing material either a solution comprising a blend of a polymeric hydroxyalkyl acrylate and a polymeric monocarboxylic acid, or a polymeric polycarboxylic acid, or a solution containing a prepolymer which has been formed by the reaction of a polymeric hydroxyalkyl acrylate with an acryloyl halide or an anhydride of a dicarboxylic acid. The porous support backing material is contacted with the solution at contacting conditions, following which the excess solution is removed and the solution-coated porous support backing material is then cured at curing conditions. This membrane will possess excellent characteristics of salt rejection and flux as well as being resistant to the action of chlorine which is present in water which is subjected to a desalination process.

摘要翻译： 包含耐氯的聚酯的半透膜可以通过在多孔载体背衬材料上浇铸，该溶液包含聚合物丙烯酸羟烷基酯和聚合单羧酸或聚合多元羧酸的共混物，或含有预聚物的溶液 通过丙烯酸羟基烷基酯与丙烯酰卤或二羧酸的酸酐的反应形成。 多孔支撑背衬材料在接触条件下与溶液接触，然后除去过量的溶液，然后在固化条件下固化溶液涂覆的多孔载体材料。 该膜将具有优异的脱盐和助熔剂特性，并且耐受在经过脱盐处理的水中存在的氯的作用。