[특허]Method of treating polyamide membranes to increase flux

Method of treating polyamide membranes to increase flux 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-039/00
출원번호	US-0595707 (1996-02-02)
발명자 / 주소	Mickols William E.
출원인 / 주소	The Dow Chemical Company
인용정보	피인용 횟수 : 44 인용 특허 : 0

초록 ▼

The flux of a composite reverse osmosis or nanofiltration membrane having a polyamide discriminating layer is enhanced in a one-step process in which the discriminating layer is treated with ammonia or certain alkylamines. It is possible to control both rejection rate and flux of the membrane as wel

대표청구항 ▼

[ What is claimed is:] [1.] A method of increasing the flux of a composite membrane having a polyamide discriminating layer which consists essentially of contacting the discriminating layer with an amine from the group consisting of ammonia; ammonia substituted with one to three alkyl groups of one to two carbons, said alkyl groups may be further substituted with one or more substituents selected from hydroxy, phenyl, or amino groups; butylamine; cyclohexylamine; 1,6 hexane diamine and mixtures thereof, wherein the concentration of the amine, whether in solution, neat or in liquid or gas phase, is at least about 5 percent by weight, under conditions such that the flux is increased at least 10 percent.

이 특허를 인용한 특허 (44)

Koehler, Jeff; Foster, Alexis; Song, Keunwon; Lee, Youngju; Shin, Chongkyu, Additives for salt rejection enhancement of a membrane.
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Childs,Ronald F.; Mika,Alicja M.; Ge,Jijun; McCrory,Chris, Asymmetric gel-filled microporous membranes.
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Mickols, William E., Composite membrane and method for making the same.
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Mickols, William E., Composite membrane and method for making the same.
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Mickols, William E., Composite membrane and method for making the same.
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William E. Mickols, Composite membrane and method for making the same.
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Mickols, William E.; Zhang, Chunming, Composite membrane including coating of polyalkylene oxide and acetophenone compounds.
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Mickols, William E.; Zhang, Chunming; Hamilton, Christopher T., Composite membrane including coating of polyalkylene oxide and triazine compounds.
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Mickols, William E.; Zhang, Chunming; Hamilton, Christopher T., Composite membrane with coating comprising polyalkylene oxide and biguanide-type compounds.
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Mickols, William E.; Zhang, Chunming; Hamilton, Christopher T., Composite membrane with coating comprising polyalkylene oxide and imidazol compounds.
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Mickols, William E.; Zhang, Chunming, Composite membrane with coating comprising polyalkylene oxide and oxy-substituted phenyl compounds.
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Mickols William E., Composite membrane with polyalkylene oxide modified polyamide surface.
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Paul, Mou; Mickols, William E., Composite polyamide membrane derived from an aliphatic acyclic tertiary amine compound.
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Roy, Abhishek; Arrowood, Tina L.; Cieslinski, Robert C.; Hawn, David D.; Jons, Steven D.; Paul, Mou; Peery, Martin H.; Qiu, XiaoHua; Rosenberg, Steven; Tomlinson, Ian A.; Zu, Chengli, Composite polyamide membrane with increased carboxylic acid functionality.
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Tomioka,Hiroki; Sugita,Kazuya; Oto,Katsufumi, Composite semipermeable membrane, and production process thereof.
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Cheng, Shu-Hui; Chen, Jong-Pyng; Wang, En Kuang; Lo, Yi-Chun; Lin, Shan-Shan, Filtration material.
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Zhang, Xingpeng; Costa, Lawrence C.; Harrold, Steven John; Narayanswamy, Babu, Flux enhancing agent for improving composite polyamide reverse osmosis membrane performance.
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Zhang, Xingpeng; Costa, Lawrence C.; Harrold, Steven John; Narayanswamy, Babu, Flux enhancing agent for improving composite polyamide reverse osmosis membrane performance.
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Kurth, Christopher James; Koehler, Jeffrey Alan; Zhou, Meijuan; Holmberg, Brett Anderson; Burk, Robert Leon, Hybrid TFC RO membranes with nitrogen additives.
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Koehler, Jeffrey Alan; Kurth, Christopher James, Hybrid TFC RO membranes with non-metallic additives.
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Koehler, Jeffrey Alan; Kurth, Christopher James, Hybrid TFC RO membranes with non-metallic additives.
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Kurth, Christopher James; Koehler, Jeffrey Alan; Zhou, Meijuan; Holmberg, Brett Anderson; Burk, Robert Leon, Hybrid nanoparticle TFC membranes.
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Kurth, Christopher James; Koehler, Jeffrey Alan; Zhou, Meijuan; Holmberg, Brett Anderson; Burk, Robert Leon, Hybrid nanoparticle TFC membranes.
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Kurth, Christopher James; Koehler, Jeffrey Alan; Zhou, Meijuan; Holmberg, Brett Anderson; Burk, Robert Leon, Hybrid nanoparticle TFC membranes.
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Kniajanski, Sergei; Yeager, Gary William; Kurth, Christopher James; Iverson, Isaac Keene; Kloos, Steven Duwayne; Hodgins, Leonard Timbrook, Membranes and methods of treating membranes.
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McCollam, Robert P., Method for applying tape layer to outer periphery of spiral wound module.
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Kawakatsu, Takahiro; Aoki, Tetsuya; Hayakawa, Kunihiro, Method for improving rejection of reverse osmosis membrane, treatment agent for improving rejection, and reverse osmosis membrane.
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Jons, Steven D.; Jons, William A., Method of testing spiral wound modules by thermal imaging.
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Song, Keunwon; Ko, Young Hoon; Rozenbaoum, Evgueni; Shin, Chongkyu, Methods of enhancing water flux of a TFC membrane using oxidizing and reducing agents.
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Hoek, Eric M. V.; Ghosh, Asim K.; Nygaard, Jodie M., Micro-and nanocomposite support structures for reverse osmosis thin film membranes.
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Mickols, William E.; Krauss, Richard C.; Niu, Q. Jason; Gaupp, Carleton L, Modified membrane.
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Niu, Qingshan Jason; Mickols, William E.; Zhang, Chunming, Modified polyamide membrane.
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Chen, Wen-Yi; Cheng, Shu-Hui; Tseng, Feng-Hung, Nano-fiber material and salt rejection filtration material.
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Childs, Ronald F.; Yu, Jie, Pervaporation composite membranes.
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Mickols, William E.; Zhang, Chunming, Polyamide membrane with coating of polyalkylene oxide and polyacrylamide compounds.
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Moon, Moo-Kyung; Yoo, Je-Kang; Lee, Sun-Yong; Kim, Youn-Kook; Ahn, Hyoung-Jun; Han, Doo-Won, Polyamide reverse osmosis composite membrane and preparation method thereof.
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Yoo, Je Kang; Lee, Sun Yong; Kim, Youn Kook, Preparation method of polyamide thin film composite reverse osmosis membrane and polyamide thin film composite reverse osmosis membrane prepared therefrom.
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Holmberg, Brett Anderson; Koehler, Jeff; Jeon, Hyung Joon, Process for improved water flux through a TFC membrane.
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Kurth, Christopher J., Process for preparing semipermeable membranes having improved permeability.
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Kurth, Christopher James; Koehler, Jeffrey Alan; Zhou, Meijuan; Holmberg, Brett Anderson; Burk, Robert Leon, Reverse osmosis membranes.
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Buschmann, Wayne E., Semipermeable polymers and method for producing same.
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Al-Mayahi, Abdulsalam; Sharif, Adel, Solvent removal process.
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Al-Mayahi, Abdulsalam; Sharif, Adel, Solvent removal process.
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Johnson, Jon E.; Mittag, Matthew D., Spiral wound element and seal assembly.
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IPC	Description
A	생활필수품
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Method of treating polyamide membranes to increase flux 원문보기

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Method of treating polyamide membranes to increase flux 원문보기

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