Method for the preparation of ionomer films

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4731263
SERIAL NO

06912701

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The invention is a method for forming a perfluorosulfonate ionomer film comprising: (a) forming a solution of a perfluorosulfonate ionomer in its salt form; (b) coating a substrate with the perfluorosulfonate ionomer solution; and (c) heating the coated substrate to a temperature of at least about 120.degree. C. for sufficient time to deposit a solvent-resistant film of a perfluorosulfonate ionomer onto the substrate.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
THE DOW CHEMICAL COMPANYMIDLAND, MI737

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Martin, Charles R Bryan, TX 28 261
Moore, III Robert B College Station, TX 1 20

Cited Art Landscape

Patent Info (Count) # Cites Year
 
THE DOW CHEMICAL COMPANY (9)
* 4330654 Novel polymers having acid functionality 134 1980
* 4337137 Composite ion exchange membranes 41 1980
* 4337211 Fluorocarbon ethers having substituted halogen site(s) and process to prepare 44 1980
* 4358412 Preparation of vinyl ethers 51 1980
* 4358545 Sulfonic acid electrolytic cell having flourinated polymer membrane with hydration product less than 22,000 241 1980
* 4470889 Electrolytic cell having an improved ion exchange membrane and process for operating 48 1980
* 4417969 Sulfonic acid electrolytic cell membranes 71 1982
* 4462877 Composite ion exchange membranes 23 1982
* 4478695 Sulfonic acid electrolytic cell membranes and use thereof in the electrolysis of sodium chloride 43 1983
 
E. I. DU PONT DE NEMOURS AND COMPANY (2)
* 4433082 Process for making liquid composition of perfluorinated ion exchange polymer, and product thereof 170 1981
* 4453991 Process for making articles coated with a liquid composition of perfluorinated ion exchange resin 60 1982
 
ASAHI KASEI KABUSHIKI KAISHA (1)
* 4357218 Cation exchange membrane and use thereof in the electrolysis of sodium chloride 34 1980
 
ASAHI KOGAKU KOGYO KABUSHIKI KAISHA (1)
* 4329435 Novel fluorinated copolymer with tridihydro fluorosulfonyl fluoride pendant groups and preparation thereof 50 1980
 
Eltech Systems Corporation (1)
* 4434116 Method for making a porous fluorinated polymer structure 13 1981
 
ASAHI GLASS COMPANY, LIMITED (1)
* 4340680 Cation exchange membrane of fluorinated polymer for an electrolysis 29 1980
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (4)
* 2003/0113,604 Fuel cell comprising a composite membrane 4 2002
* 2004/0067,402 Ultra-thin integral composite membrane 2 2003
* 2005/0171,220 Compositions containing particles of highly fluorinated ion exchange polymer 2 2005
* 2005/0119,357 Compositions containing particles of highly fluorinated ion exchange polymer 1 2005
 
BASF CORPORATION (2)
8124261 Process for recycling components of a PEM fuel cell membrane electrode assembly 1 2006
* 2007/0292,745 Process for recycling components of a PEM fuel cell membrane electrode assembly 12 2006
 
E. I. DU PONT DE NEMOURS AND COMPANY (8)
* 5447636 Method for making reinforced ion exchange membranes 43 1993
7166685 Compositions containing particles of highly fluorinated ion exchange polymer 9 2005
8058319 Process to prepare fluoropolymer dispersions and membranes 0 2007
* 2007/0282,023 FLUOROPOLYMER DISPERSIONS AND MEMBRANES 2 2007
* 2007/0281,198 MEMBRANES ELECTRODE ASSEMBLIES PREPARED FROM FLUOROPOLYMER DISPERSIONS 3 2007
* 2007/0282,022 PROCESS TO PREPARE FLUOROPOLYMER DISPERSIONS AND MEMBRANES 2 2007
* 2007/0281,199 CROSSLINKED MEMBRANE ELECTRODE ASSEMBLIES 3 2007
* 2007/0278,094 METHOD FOR PREPARING MEMBRANE ELECTRODE ASSEMBLIES FROM FLUOROPOLYMER DISPERSIONS 2 2007
 
THE CHEMOURS COMPANY FC, LLC (6)
* 6150426 Compositions containing particles of highly fluorinated ion exchange polymer 77 1997
6552093 Compositions containing particles of highly fluorinated ion exchange polymer 13 2000
6916853 Compositions containing particles of highly fluorinated ion exchange polymer 2 2002
7714028 Compositions containing particles of highly fluorinated ion exchange polymer 1 2008
* 2008/0227,875 Compositions Containing Particles of Highly Fluorinated Ion Exchange Polymer 0 2008
7893118 Compositions containing particles of highly fluorinated ion exchange polymer 0 2010
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (1)
* 6074692 Method of making MEA for PEM/SPE fuel cell 34 1998
 
THE DOW CHEMICAL COMPANY (6)
* 5124080 Electrochromic device 14 1991
* 5746954 Processes for forming thin, durable coatings of perfluorocarbon ionomers on various substrate materials 12 1995
* 5718947 Processes for forming thin, durable coatings of cation-containing polymers on selected substrates 33 1995
* 5716680 Solventless process for forming thin, durable coatings of perfluorocarbon ionomers on various polymeric materials 5 1996
* 5863610 Process for depositing a fluorocarbonsulfonic ionomer on a support and articles prepared therewith 5 1996
* 5993907 Processes for forming thin, durable coatings of perfluorocarbon ionomers on various substrate materials 6 1997
 
ENGELHARD CORPORATION (1)
* 2006/0237,034 Process for recycling components of a PEM fuel cell membrane electrode assembly 2 2005
 
INVISTA NORTH AMERICA S.A.R.L. (1)
* 2005/0182,146 Process for making a solution of perfluorosulfonated ion exchange polymers 0 2004
 
STMICROELECTRONICS (CROLLES 2) SAS (2)
* 8323733 Method for producing a membrane comprising micropassages made from porous material by chemical mechanical polishing 0 2009
* 2009/0252,871 Method for producing a membrane comprising micropassages made from porous material by chemical mechanical polishing 1 2009
 
W. L. GORE & ASSOCIATES, INC. (1)
7931995 Solid electrolyte composite for electrochemical reaction apparatus 9 2003
 
JOHNSON MATTHEY PUBLIC LIMITED COMPANY (1)
* 2005/0233,067 Manufacture of a gas diffusion electrode 4 2005
 
CONOCOPHILLIPS COMPANY (1)
* 5191151 Use of silver-exchanged ionomer membranes for gas separation 13 1991
 
DIONEX CORPORATION (1)
* 5358612 Electrophoresis with chemically suppressed detection 23 1991
* Cited By Examiner