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1. 发明授权

US5658460A Use of inorganic ammonium cation salts to maintain the flux and salt rejection characteristics of reverse osmosis and nanofiltration membranes during drying 失效
标题翻译：使用无机铵阳离子盐来保持反渗透和纳滤膜在干燥过程中的通量和排盐特性
公开(公告)号：US5658460A
公开(公告)日：1997-08-19
申请号：US646411
申请日：1996-05-07
申请人： John E. Cadotte , Daniel A. Batzel , Thomas F. Stocker
发明人： John E. Cadotte , Daniel A. Batzel , Thomas F. Stocker
IPC分类号： B01D67/00 , B01D69/12 , B01D39/00
CPC分类号： B01D67/0095 , B01D69/125
摘要： To prevent the deterioration of the flux and salt rejection characteristics of polyamide, thin-film, composite reverse osmosis membranes when subjected to relatively high temperature drying conditions, an unsubstituted inorganic ammonium cation salt of an acid is incorporated into the process of manufacture. The ammonium salt can be introduced into the process either before or after the membrane is formed by interfacial polymerization so long as it is added before the membrane is heated.
摘要翻译：为了防止聚酰胺，薄膜，复合反渗透膜在经受相对高温干燥条件时的通量和耐盐析性的劣化，将未取代的无机铵阳离子盐引入制备方法中。在通过界面聚合形成膜之前或之后，铵盐可以引入该方法中，只要在膜被加热之前加入即可。

2. 发明授权

US4960517A Treatment of composite polyamide membranes via substitution with amine reactive reagents 失效
标题翻译：通过用胺反应试剂取代处理复合聚酰胺膜
公开(公告)号：US4960517A
公开(公告)日：1990-10-02
申请号：US450705
申请日：1989-12-13
申请人： John E. Cadotte
发明人： John E. Cadotte
IPC分类号： B01D67/00
CPC分类号： B01D67/0093 , B01D2323/30
摘要： A reverse osmosis membrane having improved rejection of sulfuric acid and/or isopropanol is described. The membrane is prepared by treating a crosslinked, polyamide discriminating layer with an amine-reactive reagent selected from a carboxylic acid ester, a carboxylic acid anhydride, an amine-reactive organic halogen compound, an ethylenically unsaturated hydrocarbon, or a 1,3-propane sultone, at conditions whereby the passage of sulfuric acid in a 2 percent aqueous solution at a transmembrane pressure of 400 psi is reduced by at least 30 percent.
摘要翻译：描述了具有改进的硫酸和/或异丙醇排阻的反渗透膜。通过用选自羧酸酯，羧酸酐，胺反应性有机卤素化合物，烯属不饱和烃或1,3-丙烷的胺反应试剂处理交联的聚酰胺鉴别层来制备膜 sultone，在条件下，在400 psi的跨膜压力下硫酸在2％水溶液中通过至少30％。

3. 发明授权

US4039440A Reverse osmosis membrane 失效
标题翻译：反渗透膜
公开(公告)号：US4039440A
公开(公告)日：1977-08-02
申请号：US541477
申请日：1975-01-16
申请人： John E. Cadotte
发明人： John E. Cadotte
IPC分类号： B01D69/12 , B01D71/60 , B01D31/00 , B01D13/00
CPC分类号： B01D69/125 , B01D71/60
摘要： A reverse osmosis membrane is prepared by reaction of a film or layer of polyethylenimine with a polyfunctional reagent whose functional groups are capable of reacting with amine groups. The polyfunctional reagent is preferably a water-soluble, aromatic or heterocyclic compound having acid chloride or isocyanate functional groups.The membrane is preferably prepared in situ on a polysulfone or chlorinated polyvinyl chloride support by initial formation of a layer of polyethylenimine on the support, followed by interfacial reaction with the polyfunctional reagent to produce a thin surface coating possessing salt barrier characteristics.
摘要翻译：反渗透膜通过聚乙烯亚胺的膜或多层与官能团能够与胺基反应的多官能试剂反应来制备。多官能试剂优选为具有酰氯或异氰酸酯官能团的水溶性，芳香族或杂环化合物。

4. 发明授权

US4964998A Use of treated composite polyamide membranes to separate concentrated solute 失效
标题翻译：使用经处理的复合聚酰胺膜分离浓缩溶质
公开(公告)号：US4964998A
公开(公告)日：1990-10-23
申请号：US450706
申请日：1989-12-13
申请人： John E. Cadotte , Joel-Raphael Racchini , Robert J. Petersen
发明人： John E. Cadotte , Joel-Raphael Racchini , Robert J. Petersen
IPC分类号： B01D61/02 , B01D67/00
CPC分类号： B01D67/0093 , B01D61/025 , B01D2323/30
摘要： A method of separating water of reduced concentration of a selected solute via reverse osmosis, wherein the selected solute is sulfuric acid, sodium hydroxide, isopropanol, sodium nitrate or another solute having a much higher solute passage than sodium chloride. The reverse osmosis membrane is prepared by treating a crosslinked, polyamide discriminating layer with an amine-reactive reagent or compatible oxidant at conditions whereby the passage of the selected solute at a selected transmembrane pressure is reduced by at least 30 percent.
摘要翻译：一种通过反渗透分离浓度低的选定溶质的水的方法，其中选择的溶质是硫酸，氢氧化钠，异丙醇，硝酸钠或具有比氯化钠高得多的溶质通道的另一种溶质。反渗透膜通过在胺反应试剂或相容氧化剂处理交联的聚酰胺鉴别层的条件下制备，在选定的跨膜压力下所选择的溶质通过至少30％的条件下进行。

5. 发明授权

US4895661A Alkali resistant hyperfiltration membrane 失效
标题翻译：耐碱超滤膜
公开(公告)号：US4895661A
公开(公告)日：1990-01-23
申请号：US339331
申请日：1989-04-14
申请人： John E. Cadotte
发明人： John E. Cadotte
IPC分类号： B01D69/12 , B01D71/38 , C07C51/41 , C07C51/42
CPC分类号： B01D69/125 , B01D71/38 , C07C51/41 , C07C51/42
摘要： A novel hyperfiltration membrane and process for making the same is described. The membrane is useful for processing copper electroless solutions to concentrate for re-use salts of chelating agents. The membrane can be prepared by crosslinking a water-compatible polymer in the presence of a strong mineral acid, such as phosphoric acid.
摘要翻译：描述了一种新颖的超滤膜及其制备方法。该膜可用于处理铜无电解液以浓缩以重复使用螯合剂的盐。膜可以通过在强无机酸如磷酸的存在下交联水相容的聚合物来制备。

6. 发明授权

US4812270A Novel water softening membranes 失效
标题翻译：新型水软化膜
公开(公告)号：US4812270A
公开(公告)日：1989-03-14
申请号：US206142
申请日：1988-06-13
申请人： John E. Cadotte , David R. Walker
发明人： John E. Cadotte , David R. Walker
IPC分类号： B01D67/00 , B01D13/00
CPC分类号： B01D67/0088 , B01D67/0093 , B01D2323/30 , Y10S264/48
摘要： A novel water softening membrane and process for making the same is described. The membrane can be prepared by treating a polyamide reverse osmosis membrane with a strong mineral acid followed by treatment with a rejection enhancing agent. The resulting membrane at transmembrane pressures of 50 psi can attain a magnesium sulfate rejection with a 0.2 percent aqueous solution of more than 90 percent with a water flux of more than 15 gallons per square foot per day.
摘要翻译：描述了一种新型水软化膜及其制备方法。可以通过用强无机酸处理聚酰胺反渗透膜，然后用排斥增强剂处理来制备膜。所产生的膜在50psi的跨膜压力下可以获得超过90％的0.2％水溶液的硫酸镁排除，每天每平方英尺超过15加仑的水通量。

7. 发明授权

US4960518A Treatment of composite polyamide membranes with compatible oxidants 失效
标题翻译：用相容的氧化剂处理复合聚酰胺膜
公开(公告)号：US4960518A
公开(公告)日：1990-10-02
申请号：US450691
申请日：1989-12-13
申请人： John E. Cadotte , Joel R. Racchini
发明人： John E. Cadotte , Joel R. Racchini
IPC分类号： B01D67/00
CPC分类号： B01D67/0093 , B01D2323/30
摘要： A reverse osmosis membrane having improved rejection of sulfuric acid and/or isopropanol is described. The membrane is prepared by treating a crosslinked, polyamide discriminating layer with a compatible oxidizing reagent, such as peracetic acid, periodic acid or chloramine, whereby the passage through the treated membrane of sulfuric acid in a 2 percent aqueous solution at a transmembrane pressure of 400 psi is reduced by at least 30 percent.
摘要翻译：描述了具有改进的硫酸和/或异丙醇排阻的反渗透膜。通过用相容的氧化剂如过乙酸，高碘酸或氯胺处理交联的聚酰胺鉴别层来制备膜，由此在跨膜压力为400的2％水溶液中通过处理过的硫酸盐膜 psi减少至少30％。

8. 发明授权

US4277344A Interfacially synthesized reverse osmosis membrane 失效
标题翻译：间接合成的反渗透膜
公开(公告)号：US4277344A
公开(公告)日：1981-07-07
申请号：US014164
申请日：1979-02-22
申请人： John E. Cadotte
发明人： John E. Cadotte
IPC分类号： B01D71/82 , B01D69/12 , B01D71/56 , C08G69/28 , B01D13/00 , B01D31/00 , B32B27/34 , B32B33/00
CPC分类号： B01D69/125 , B01D71/56 , C08G69/28 , Y10T428/31536 , Y10T428/31725 , Y10T428/31736 , Y10T428/31739 , Y10T428/31743 , Y10T428/31779 , Y10T428/8305
摘要： Good salt rejection and flux characteristics can be obtained with reverse osmosis membranes made from crosslinked, interfacially polymerized aromatic polyamides, particularly poly(arylenepolyamine aromaticpolycarboxylamides) such as poly(phenylenediamine trimesamide). The aromatic polyamides are preferably synthesized directly from an essentially monomeric polyacyl halide (at least tri- or higher in acyl functionality) and an essentially monomeric arylene polyamine with a measurable water solubility. As compared to closely analogous linear polymers, these interfacially polymerized, crosslinked polyamides have a lower % elongation and lower solubility (e.g. in amide solvents). Chlorine resistance characteristics of these polyamides are also good and can be improved by treatment with a chlorinating agent. In the preferred practice of the method for making a reverse osmosis membrane, a porous support layer is coated with the polyamine component (e.g. an aqueous solution of phenylene diamine); the thus-coated support is contacted with the polyacyl halide component (e.g. trimesoyl chloride), thereby initiating the interfacial polymerization in situ on the support; and the resulting product is dried to provide a composite membrane comprising the polyamide laminated to the porous support.
摘要翻译：通过交联的界面聚合的芳族聚酰胺，特别是聚（亚苯基多胺芳族多胺羧酰胺）如聚（苯二胺三甲苯酰胺）制成的反渗透膜可以获得良好的耐盐析和通量特性。芳族聚酰胺优选直接由基本上单体的多酰基卤（至少三酰基或更高的酰基官能度）和基本上具有可测量的水溶性的单体亚芳基多胺合成。与密实类似的线性聚合物相比，这些界面聚合的交联聚酰胺具有较低的伸长率和较低的溶解度（例如在酰胺溶剂中）。这些聚酰胺的耐氯特性也良好，可以通过用氯化剂处理来改善。在制造反渗透膜的方法的优选实践中，多孔支撑层涂覆有多胺组分（例如苯二胺的水溶液）; 如此涂覆的载体与聚酰卤组分（例如均苯三酰氯）接触，从而在载体上原位引发界面聚合; 并将所得产物干燥以提供包含层压到多孔载体上的聚酰胺的复合膜。

9. 发明授权

US4834886A Process for making alkali resistant hyperfiltration membrane and resulting product 失效
标题翻译：制备耐碱超滤膜及其制品的方法
公开(公告)号：US4834886A
公开(公告)日：1989-05-30
申请号：US1488
申请日：1987-01-08
申请人： John E. Cadotte
发明人： John E. Cadotte
IPC分类号： B01D69/12 , B01D71/38 , B01D71/40 , B01D71/48 , B01D71/66 , C07C51/41 , C07C51/42
CPC分类号： B01D69/125 , B01D71/38 , C07C51/41 , C07C51/42
摘要： A novel hyperfiltration membrane and process for making the same is described. The membrane is useful for processing copper electroless solutions to concentrate for re-use salts of chelating agents. The membrane can be prepared by crosslinking a water-compatible polymer in the presence of a phosphorus-containing acid, such as phosphoric acid, wherein the acid is present in a sufficient amount to catalyze crosslinking and to form a plurality of pores in the coating when dried.

10. 发明授权

US4824574A Novel water softening process using membranes 失效
标题翻译：新型水软化工艺使用膜
公开(公告)号：US4824574A
公开(公告)日：1989-04-25
申请号：US205523
申请日：1988-06-13
申请人： John E. Cadotte , David R. Walker
发明人： John E. Cadotte , David R. Walker
IPC分类号： B01D67/00 , C02F1/44
CPC分类号： B01D67/0088 , B01D67/0093 , B01D2323/30
摘要： A novel water softening membrane and process for making the same is described. The membrane can be prepared by treating a polyamide reverse osmosis membrane with a strong mineral acid followed by treatment with a rejection enhancing agent. The resulting membrane at transmembrane pressures of 50 psi can attain a magnesium sulfate rejection with a 0.2 percent aqueous solution of more than 90 percent with a water flux of more than 15 gallons per square foot per day.
摘要翻译：描述了一种新型水软化膜及其制备方法。可以通过用强无机酸处理聚酰胺反渗透膜，然后用排斥增强剂处理来制备膜。所产生的膜在50psi的跨膜压力下可以获得超过90％的0.2％水溶液的硫酸镁排除，每天每平方英尺超过15加仑的水通量。

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