3m Innovative Properties Company

3m Innovation Properties Company

André Streiter

Klaus Hintzer

Tilman C Zipplies

Kai Helmut Lochhaas

Harald Kaspar

Michael Juergens

Oleg Shyshkov

Michael Jürgens

Sabine H G Beuermann

Muhammad Imran Ul-haq

Herbert Koenigsmann

Gunther J Kaempf

Werner Schwertfeger

Michael C Dadalas

Mark W Muggli

Michael H Mitchell

Kevin Wilmot Eberman

Brandon Alan Bartling

Helmut Traunspurger

Oliver Frey

Jürgen Troe

Wolfgang Neumann

Günther J Kämpf

Klaus Luther

Michael JÜRGENS

Guenther J Kaempf

Methods of preparing a dry powder blend co-coagulating conductive carbon black particles and fibrillizable polytetrafluoroethylene particles from an aqueous dispersion and drying the co-coagulate are described. Dry powders prepared by such methods and electrodes prepared from such powders are also described.

Battery electrode binder material

Described herein is a process for making PTFE having a standard specific gravity of less than 2.160 g/cmcomprising: polymerizing a tetrafluoroethylene monomer in an aqueous medium comprising an emulsifier and an initiator in a reaction vessel and contacting the aqueous medium with a fluorinated polyether. Also described herein are the polymerizable compositions and articles thereof.

Process for producing PTFE and articles thereof

Fluoropolymers containing one or more azide group wherein the azide group is not a sulfonyl-azide group and processes of preparing them.

Azide-containing fluoropolymers and their preparation

Described herein is a method of purifying a product and recycling water comprising the following steps:

Fluoropolymer compositions and purification methods thereof

Described herein is a composition comprising an aqueous polymerization reaction product of fluorinated monomers and wherein the polymerization is initiated (i) in the absence of a fluorinated emulsifier and whereby no fluorinated emulsifier is added during polymerization or (ii) in the presence of an fluorinated emulsifier selected from: [R&#x2014;O-L-COO-]X(I) wherein L represents a linear or branched, non-fluorinated, partially fluorinated, or fully fluorinated alkylene group, Rrepresents a linear or branched partially or fully fluorinated aliphatic group or a linear or branched partially or fully fluorinated aliphatic group interrupted with at least one oxygen atom, Xrepresents a cation having the valence i and i is 1, 2 or 3; wherein the reaction product and/or the resulting aqueous phase are substantially free of di- and tri-alkylamines and substantially free of low molecular weight fluoroorganic compounds and methods thereof.

There is provided an article prepared from a fluoroelastomer, the fluoroelastomer being derived from an emulsion, the emulsion comprising a fluorinated emulsifier represented by the formula F&#x2014;(CF)&#x2014;[O(CF)]&#x2014;O&#x2014;(CHF)&#x2014;(CF)&#x2014;X.

Article prepared from clean fluoropolymers

A process is described of pyrolyzing at least one perfluorinated hydrocarbon, or a material containing at least one perfluorinated hydrocarbon, in the presence of hydrogen, to yield a reaction mixture containing difluorocarbene.

Process for manufacturing perfluoroolefins by pyrolysis of perfluorocarbons in the presence of hydrogen

Method of making fluoropolymers by emulsion polymerization of one or more fluorinated monomers in an aqueous phase in the presence of a fluorinated emulsifier, said method comprises adding a doping agent in a weight ratio with respect to the emulsifier of from about 1:2 to about 1:20, said doping agent has a melting point of equal or less than 30&#xb0; C. and a boiling point of at least about 100&#xb0; C. and is selected from the group consisting of fluorinated cyclic hydrocarbons, fluorinated polyoxyalkenes, fluorinated alkenes and fluorinated polyoxyalkenes.

Method of preparing fluoropolymers by aqueous emulsion polymerization

There is provided a fluoroelastomer characterized by containing one type or more types of fluorinated emulsifiers represented by the formula: F&#x2014;(CF)t-[O(CF)n]m-O&#x2014;(CHF)o-(CF)p-X where m=0 to 3; n=1 to 5; o=0 to 1; p=1 to 3; t=1 to 10; and where when t=2 than o&#x2260;0; and further where X is selected from a group consisting of a carboxyl acid group and a salt of a carboxylic acid group. A method for preparing fluoroelastomers by using such fluorinated emulsifiers in emulsion polymerization of fluoromonomers and articles containing such fluoroelastomers are also provided. A fluorinated elastomer dispersion including an aqueous mixture of a crosslinkable fluorinated elastomer and such fluorinated emulsifiers are also provided. The fluoroelastomers created with such fluorinated emulsifiers are essentially free of cations other than NHand Hand have a low glass transition temperature.

Process for manufacturing clean fluoropolymers

Growing community of inventors

Muehldorf am Inn, Germany

André Streiter