3m Innovative Properties Company

Hoechst Aktiengesellschaft

Other

3m Innovation Properties Company

Dyneon Gmbh

Tilman C Zipplies

Klaus Hintzer

Harald Kaspar

Kai Helmut Lochhaas

Michael C Dadalas

Werner Schwertfeger

Michael Jürgens

Andreas R Maurer

Herbert Koenigsmann

Denis Duchesne

Oleg Shyshkov

Ludwig Mayer

André Streiter

Helmut Traunspurger

Jens Schrooten

Michael Juergens

Florian D Jochum

Richard M Flynn

Gernot Loehr

Karl D Weilandt

George G I Moore

Jay F Schulz

Peter Bissinger

Lisa P Chen

Markus E Hirschberg

Miguel Antonio Guerra

Thomas J Blong

Gregg D Dahlke

Thorsten Gerdes

Ralph Kaulbach

Arne Thaler

Achim Schmidt-Rodenkirchen

Bernd Felix

Egon Obermaier

Allen M Sohlo

Muhammad Imran Ul-haq

Per Miles Nelson

Oliver Frey

Thomas Kolbeck

Herbert Strasser

Sabine H G Beuermann

Gunther J Kaempf

Zai-Ming Qiu

Rudolf J Dams

Steven Joseph Hamrock

Tatsuo Fukushi

Mark W Muggli

Michael S Terrazas

James Arthur McDonell

Monika A Willert-Porada

Albert Killich

Herbert Königsmann

Duane Douglas Fansler

Jimmie Rae Baran, Jr

Yuta Suzuki

Werner M A Grootaert

Rainer A Guggenberger

Robert E Kolb

Dennis Edward Vogel

Kim Marie Vogel

William J Hunt

Michael H Mitchell

Thomas Kaiser

Gerd-Volker Röschenthaler

Tamon Aoki

Stephan F&uuml;hrer

Philipp Doebert

Armin Budesheim

Hans-Bodo Richter

Ulrich Reiff

Thomas G Kolbeck

Jürgen Troe

Muhammad Z Nawaz

Monika Willert-Porada

Arnd Kurz

Jens Herdegen

Stephan Aschauer

Arnd Kruz

Sebastian Seidl

Thomas Berger

Günther J Kämpf

Klaus Luther

Jolanta Ignatowska

Kai Helmut Löchhaas

Michael C Dadaias

Michael JÜRGENS

Andreas Spiewok

Christoph Schymura

Florian Daniel Jochum

Guenther J Kaempf

James A Mcdonell

George GI Moore

Werner Schwertferger

Michael Jüergens

Method of reducing the amount of a fluorinated acid or its salts from a fluoropolymer, the method comprises: (i) providing a composition containing particles of the fluoropolymer, (ii) contacting the fluoropolymer particles with a treatment composition comprising at least one organic liquid; and, optionally, further comprising (iii) isolating, washing and subjecting the fluoropolymer to drying treatment, and wherein the fluoropolymer contains units derived from tetrafluoroethene (TFE) and is selected from the group of fluoroelastomers and the group of fluoropolymers having a melting point of less than 150° C. Also provided are fluoropolymer and compositions containing such polymers that are essentially free of fluorinated acids and their salts.

Fluoropolymers with very low amounts of a fluorinated alkanoic acid or its salts

The copolymer includes divalent units represented by formula &#x2014;[CF&#x2014;CF]&#x2014;, divalent units represented by formula; and one or more divalent units independently represented by formula: The copolymer has an &#x2014;SOX equivalent weight in a range from 300 to 2000. A polymer electrolyte membrane that includes the copolymer and a membrane electrode assembly that includes such a polymer electrolyte membrane are also provided.

Fluorinated copolymer having sulfonyl pendant groups and compositions and articles including the same

The copolymer includes divalent units represented by formula &#x2014;[CF&#x2014;CF]&#x2014;, divalent units represented by formula: (I), and one or more divalent units independently represented by formula: (II) When Z is hydrogen, the copolymer has an alpha transition temperature of up to 100 ?C. The copolymer has an &#x2014;SOZ equivalent weight in a range from 300 to 1400, and a variation of the copolymer in which &#x2014;SOZ is replaced with &#x2014;SOF has a melt flow index of up to 80 grams per ten minutes measured at a temperature of 265&#xb0; C. and at a support weight of 5 kg. A catalyst ink or polymer electrolyte membrane including the copolymer are also provided. 

Fluorinated copolymer and compositions and articles including the same

An aqueous dispersion comprising a tetrafluoroethylene core-shell polymer and at least one surfactant corresponding to the general formula R0-[CHCH0][R0]-Rwherein Rrepresents a linear or branched aliphatic hydrocarbon group having at least 8 carbon atoms, preferably 8 to 18 carbon atoms, R2 represents an alkylene having 3 carbon atoms, R3 represents hydrogen, a C1-C3 alkyl group, or a C1-C3 hydroxyalkyl group, n has a value of 0 to 40, m has a value of 0 to 40 and the sum of n+m is at least 2, wherein the dispersion is free of fluorinated emulsifiers or contains them in an amount of less than 50 ppm based on the weight of the dispersion and wherein the core-shell polymer contains an outer shell of tetrafluoroethylene homopolymer. Further provided are methods of making the dispersions, coating compositions comprising the dispersions and article coated by the coating composition.

Tetrafluoroethylene polymer dispersions stabilized with aliphatic non-ionic surfactants

A method of making a copolymer is disclosed. The method includes copolymerizing components including tetrafluoroethylene and a compound represented by formula CF&#x2550;CF&#x2014;O&#x2014;(CF)&#x2014;SOX, wherein 'a' is a number from 1 to 4, and X is &#x2014;NZH, &#x2014;NZ&#x2014;SO&#x2014;(CF)&#x2014;SOX', or &#x2014;OZ, wherein Z is independently a hydrogen, an alkali metal cation, or a quaternary ammonium cation, and wherein X&#x2032; is independently &#x2014;NZH or &#x2014;OZ. The components include at least 60 mole % of tetrafluoroethylene based on the total amount of components. A copolymer prepared by the method is also provided. A method of making a membrane using the copolymer is also provided. The present disclosure also provides a polymer electrolyte membrane that includes a copolymer made by the method and a membrane electrode assembly that includes such a polymer electrolyte membrane.

Method of making a copolymer of tetrafluoroethylene having sulfonyl pendant groups

Described herein is a peroxide curable, highly fluorinated elastomer derived from tetrafluoroethylene, a perfluoro ether monomer, and a compound selected from at least one of a highly fluorinated bisolefin ether and an iodine-containing perfluorinated ether.

Highly fluorinated elastomers

A copolymer having tetrafluoroethylene units and second polymerized monomer units in a range from 0.2 to 1 percent by weight, based on the total weight of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more &#x2014;O&#x2014; groups, n is independently from 1 to 6, and z is 0, 1, or 2. The copolymer has a melt flow index in a range from 0.02 grams per 10 minutes to 19.4 grams per 10 minutes. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed.

Tetrafluoroethylene and perfluorinated allyl ether copolymers

Described herein is a polymerizable composition substantially free of an organic emulsifier, methods of making, and articles thereof. The polymerizable composition comprises: a continuous phase; a polymerizable monomer; an initiator; and inorganic nanoparticles, wherein the inorganic nanoparticles are substantially free of groups that will copolymerize with the polymerizable monomer.

Polymerizable compositions free of organic emulsifier and polymers and methods of making thereof

Curable fluoropolymer containing repeating units derived from VDF and TFE and at least one other fluorinated comonomer and further containing &#x2014;CFCHI end groups and branching sites derived from one or more perfluorinated bisolefinic ether(s) used as modifier(s), wherein the one or more perfluorinated bisolefinic ether(s) used as modifier(s) correspond to the general formula: CF&#x2550;CF&#x2014;(CF)&#x2014;O&#x2014;(R)&#x2014;O&#x2014;(CF)CF&#x2550;CFwherein n and m are independent from each other either 1 or 0 and wherein Rrepresents a perfluorinated linear or branched, cyclic or acyclic aliphatic or aromatic hydrocarbon residue that may be interrupted by one or more oxygen atoms and comprises up to 30 carbon atoms. Further provided are methods of making the curable fluoropolymers and for making an article containing the curable polymers.

Peroxide curable fluoropolymers obtainable by polymerization with non-fluorinated emulsifiers

A copolymer having tetrafluoroethylene units and units independently represented by formula (I) in a range from 0.02 to 2 mole percent, based on the total amount of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more &#x2014;0&#x2014; groups, n is independently from 1 to 6, and z is 0, 1, or 2. The copolymer has a melt flow index in a range from 20 grams per 10 minutes to 40 grams per 10 minutes. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed. 

A copolymer having tetrafluoroethylene units, hexafluoropropylene units, and units independently represented by formula in a range from 0.02 to 2 mole percent, based on the total amount of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more &#x2014;O&#x2014; groups, n is from 1 to 6, and m is 0 or 1. The copolymer has a melt flow index in a range from 25 grams per 10 minutes to 35 grams per 10 minutes and has up to 50 unstable end groups per 10carbon atoms. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed. 

Tetrafluoroethylene/hexafluoropropylene copolymers including perfluoroalkoxyalkyl pendant groups and methods of making and using the same

Provided are methods for removing a perfluorinated alkanoic acid from solutions containing the perfluorinated alkanoic acid and a fluorinated alkoxy acid. These methods include contacting the first solution with an anion-exchange resin to produce a second solution and a resultant anion-exchange resin having perfluorinated alkanoic acid adsorbed thereto, wherein the perfluorinated alkanoic acid is present in the first solution at a first concentration and is present in the second solution at a second concentration which is lower than the first concentration, and separating the second solution from the resultant anion-exchange resin.

Method for removing perfluorinated alkanoic acids

A copolymer having tetrafluoroethylene units, hexafluoropropylene units, and units independently represented by formula in a range from 0.02 to 2 mole percent, based on the total amount of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more &#x2014;O&#x2014; groups, z is 1 or 2, each n is independently from 1 to 6, and m is 0 or 1. The copolymer has a melt flow index in a range from 25 grams per 10 minutes to 35 grams per 10 minutes and has a combined number of unstable end groups and &#x2014;CFH end groups in a range from 25 per 10carbon atoms up to 120 per 10carbon atoms. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed. 

Tetrafluoroethylene/hexafluoropropylene copolymers including perfluoroalkoxyalkyl pendant groups

A copolymer having tetrafluoroethylene units, hexafluoropropylene units, and units independently represented by formula in a range from 0.001 to 2 mole percent, based on the total amount of the copolymer. In these units, a is 0 or 1, each b is independently from 1 to 4, c is 0 to 4, d is 0 or 1, and e is 1 to 6. In the &#x2014;SOX groups, X is independently &#x2014;F, &#x2014;NH, &#x2014;OH, or &#x2014;OZ, wherein Z is independently a metallic cation or a quaternary ammonium cation. The copolymer has a melt flow index in a range from 20 grams per 10 minutes to 40 grams per 10 minutes. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed. 

Tetrafluoroethylene/hexafluoropropylene copolymers having pendant sulfonyl groups

A composition of solid particles comprising substantially inorganic, electronically conductive particles and fluoropolymer particles, wherein the fluoropolymer is melt-processable and has a melting point between 100&#xb0; C. and 325&#xb0; C. and a melt flow index at 372&#xb0; C. and at 5 kg load (MFI 372/5) of at least 0.1 and up to 100 g/10 min, and wherein the fluoropolymer particles have a particle size of less than 500 nm and wherein the particles comprising the substantially inorganic, electronically conductive material is present in the form of particles having a particle size of less than 15,000 &#x3bc;m, and methods for producing such compositions and articles containing such compositions.

Conductive fluoropolymer compositions

Growing community of inventors

Burghausen, Germany

Tilman C Zipplies