[특허]Methods for manufacturing ion exchange membranes

[미국특허] Methods for manufacturing ion exchange membranes 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08J-005/00 B32B-037/00 B01D-069/12 C08J-005/22 B01D-067/00 B32B-037/06 B32B-038/10 B32B-038/00
출원번호	US-0426517 (2013-07-19)
등록번호	US-10252223 (2019-04-09)
국제출원번호	PCT/US2013/051210 (2013-07-19)
국제공개번호	WO2014/039171 (2014-03-13)
발명자 / 주소	Ramanan, Harikrishnan
출원인 / 주소	BL Technologies, Inc.
인용정보	피인용 횟수 : 0 인용 특허 : 21

초록 ▼

To make membranes, a plurality of membrane substrates are each wetted with a curable liquid mixture, arranged in a stack such that every pair of substrates are separated by at least one film, and moved simultaneously through a common curing region. Each wetted substrate sheet may be sandwiched between two films. After curing, the stack comprises two or more membranes with each pair of membranes separated by a film. An apparatus for making membranes comprises at least two substrate feeding devices, at least one film feeding device, one or more chemical wetting devices, a curing region, optionally, a stack separating region, and, optionally, a membrane binding or fusing region. Membrane production rate may be increased while the curing energy required per unit area of membrane is decreased. The method can make, for example, ion exchange membranes.

대표청구항 ▼

1. A method of making membranes, the method comprising: wetting a plurality of membrane substrates, wherein each of the plurality of membrane substrates is wetted with one of a plurality of curable liquid mixtures, and wherein at least two of the plurality of curable liquid mixtures are different from each other;continuously arranging one or more films and the plurality of wetted substrates in a continuous stack such that a pair of the plurality of wetted substrates is separated by at least one film, and wherein the plurality of wetted substrates in the continuous stack comprises the membrane substrates that are wetted with the at least two curable liquid mixtures that are different from each other; andsimultaneously curing the liquid mixtures in the wetted substrates in the continuous stack to produce a plurality of membranes. 2. The method of claim 1, wherein the membranes are ion exchange membranes. 3. The method of claim 1, wherein each of the wetted substrates is arranged in the stack between two films. 4. The method of claim 1, wherein the films are made of polyester. 5. The method of claim 1, wherein the stack comprises from 2 to 10 wetted substrates. 6. The method of claim 1, wherein the liquid mixtures in the wetted substrates are cured by heating or radiation. 7. The method of claim 6, wherein the liquid mixtures in the wetted substrates are heated to a temperature of from about 40° C. to about 200° C. 8. The method of claim 1, further comprising separating the membranes from the films. 9. The method of claim 8, further comprising attaching two or more membranes together after the membranes have been separated from the films. 10. The method of claim 1, wherein the at least two curable liquid mixtures that are different from each other comprise different curable compounds. 11. The method of claim 1, wherein: one of the at least two curable liquid mixtures that are different from each other comprises a curable compound that results in an anion-exchange membrane, andanother of the at least two curable liquid mixtures that are different from each other comprises a curable compound that results in a cation-exchange membrane.

이 특허에 인용된 특허 (21) 인용/피인용 타임라인 분석

MacDonald, Russell James; Peters, Jack, Anion exchange polymers, methods for making and materials prepared therefrom.
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MacDonald, Russell James; Peters, Jack, Anion exchange polymers, methods for making and materials prepared therefrom.
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MacDonald Russell J. (Watertown MA), Anion selective polymers prepared from concentrated solutions of N,N′-methylenebisacrylamide.
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MacDonald Russell J. (Watertown MA), Cation exchange membranes.
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Sutcliffe David T. (Derby GB2) Barraclough David J. (Derby GB2), Composite material manufacture by shaping individual sheets followed by consolidating the sheets.
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Hodgdon Russell B. (Concord MA) MacDonald Russell J. (Watertown MA) Alexander Samuel S. (Concord MA), High ion exchange capacity polyelectrolytes having high crosslink densities and caustic stability.
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MacDonald,Russell J.; Lech,James A., Ion exchange and electrochemical methods and devices employing one-step quaternized and polymerized anion selective polymers.
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Russell J. MacDonald ; James A. Lech, Ion exchange and electrochemical methods and devices employing one-step quaternized and polymerized anion selective polymers.
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MacDonald, Russell James; Gudipati, Chakravarthy; Zhang, Kai, Ion exchange compositions, methods for making and materials prepared therefrom.
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Hodgdon Russell B. (Sudbury MA) Waite Warren A. (Burlington MA), Ion-exchange membranes reinforced with non-woven carbon fibers.
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MacDonald Russell J. (Wilmington MA), Polymers prepared from concentrated solutions of N′,N′methylenebisacrylamide.
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MacDonald Russell J. (Watertown MA) Hodgdon Russell B. (Sudbury MA) Alexander Samuel S. (Concord MA), Process for manufacturing continuous supported ion selective membranes using non-polymerizable high boiling point solven.
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MacDonald Russell J. (Watertown MA) Hodgdon Russell B. (Sudbury MA) Alexander Samuel S. (Concord MA), Process for manufacturing continuous supported ion selective membranes using non-polymerizable high boiling point solven.
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Hamano Toshikatsu (Machida JPX), Process for producing an ion exchange membrane using irradiation by ionizing radiation followed by thermal polymerizatio.
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Howell Barbara F. (Arnold MD) Venkatachalam Ravanasamudram S. (Arnold MD) Wehrle John P. (Riverdale MD), Process for producing hydrophilic polymer membranes.
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Swamikannu A. Xavier (Mt. Prospect IL), Processes for using a thin film composite ultrafiltration membrane.
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MacDonald Russel J. (Wilmington MA) Hodgdon Russell B. (Sudbury MA), Synthesis of base-stable aliphatic anion exchange polymers.
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MacDonald Russell J. (Watertown MA), Synthesis of highly cross-linked cation-exchange polymers from an aqueous solution.
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MacDonald Russell J. (Woburn MA), Synthesis of water soluble cross-linkers and their use in the manufacture of anionic polymers.
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MacDonald Russell J. (Woburn MA), Synthesis of water soluble cross-linkers and their use in the manufacture of anionic polymers.
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Elmes David A. (Gates Mills OH) Mullier Marie A. (Bracknell GB2), Toughened resins and composites.
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[미국특허] Methods for manufacturing ion exchange membranes 원문보기

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