3m Innovative Properties Company

3m Innovation Properties Company

Michael Jürgens

Klaus Hintzer

Tilman C Zipplies

Harald Kaspar

Kai Helmut Lochhaas

Andreas R Maurer

Werner Schwertfeger

Richard M Flynn

George G I Moore

Jay F Schulz

Herbert Koenigsmann

Ludwig Mayer

Michael C Dadalas

André Streiter

Herbert Königsmann

Zai-Ming Qiu

Rudolf J Dams

Miguel Antonio Guerra

Michael S Terrazas

Oleg Shyshkov

Alain G Verschuere

Jürgen Troe

Klaus Luther

Kai Helmut Löchhaas

Günther J Kämpf

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

Provided are curable fluoroelastomers. Further provided are methods of making the curable elastomers, curable fluoroelastomer compositions and methods of making them and shaped articles made from the curable fluoroelastomer compositions.

Peroxide curable fluoroelastomers containing modifiers and iodine or bromine endgroups

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

A method of making a fluoropolymer dispersion by first providing a fluoropolymer dispersion comprising fluoropolymer particles and one or more fluorinated surfactants selected from fluorinated carboxylic acids or salts thereof having the general formula:[R&#x2014;O-L-COO]X&#x2003;&#x2003;(I)

Method of making fluoropolymer dispersion

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

A composition including at least one first divalent unit represented by formula: Each Rf is independently selected from the group consisting of Rf&#x2014;(O)&#x2014;CHF&#x2014;(CF)&#x2014;; [Rf&#x2014;(O)&#x2014;C(L)H&#x2014;CF&#x2014;O]&#x2014;W&#x2014;; RfO&#x2014;(CF); F(CF)&#x2014;(O&#x2014;CF2)&#x2014;O&#x2014;CF&#x2014;; and CF&#x2014;O&#x2014;(CF)&#x2014;(OCF(CF)&#x2014;CF)&#x2014;O-L-. Each Q is independently selected from the group consisting of a bond, &#x2014;C(O)&#x2014;N(R)&#x2014;, and &#x2014;C(O)&#x2014;O&#x2014;. Each X is independently selected from the group consisting of alkylene and arylalkylene, wherein alkylene and arylalkylene are each optionally interrupted by at least one ether linkage and optionally terminated by &#x2014;N(R)&#x2014;C(O)&#x2014; or &#x2014;O&#x2014;C(O)&#x2014;. R and Rare each independently selected from the group consisting of hydrogen and alkyl having from 1 to 4 carbon atoms. Rfrepresents a partially or fully fluorinated alkyl group having from 1 to 10 carbon atoms and optionally interrupted with at least one oxygen atom. Rfis selected from the group consisting of CFCFH&#x2014; and F(CF2)-. Methods of reducing surface tension of a liquid, making foams, and treating a surface using the compositions are also disclosed. 

Fluorinated ether compositions and methods of using the same

A method of making a fluoropolymer in the presence of a fluorinated surfactant.

Aqueous emulsion polymerization process for producing fluoropolymers

A process comprising polymerizing tetrafluoroethylene in an aqueous emulsion in the presence of a non-telogenic surfactant having an anionic portion with the general formula (I):R&#x2014;O-L-CO&#x2014;&#x2003;&#x2003;(I)wherein Ris selected from a partially fluorinated alkyl group, a perfluorinated alkyl group, a partially fluorinated alkyl group interrupted by one or more oxygen atoms, and a perfluorinated alkyl group interrupted by one or more oxygen atoms, wherein Rhas from 1 to 10 carbon atoms; and L is an alkylene group having the general formula (CX)wherein each X is independently selected from R, fluorine, and hydrogen and n is selected from 1 to 5, with the proviso that the surfactant contains at least one unit selected from a &#x2014;CH&#x2014; unit and a &#x2014;CHF&#x2014; unit. Also provided are aqueous dispersions comprising these surfactants and methods of coating substrates with the aqueous dispersions.

Explosion taming surfactants for the production of perfluoropolymers

The invention provides a fluorinated surfactant having the general formula:[R&#x2014;(O)&#x2014;CHF&#x2014;(CF)&#x2014;COO&#x2014;]X&#x2003;&#x2003;(I)wherein Rrepresents a partially or fully fluorinated aliphatic group optionally interrupted with one or more oxygen atoms, t is 0 or 1 and n is 0 or 1, Xrepresents a cation having a valence i and i is 1, 2 or 3. The surfactant can be used in emulsion polymerization of fluoromonomers to prepare fluoropolymers.

Fluorinated surfactants for making fluoropolymers

A method for removing a fluorinated carboxylic acid or salt thereof from an aqueous liquid by contacting the aqueous liquid with adsorbent particles. The fluorinated carboxylic acid or salt thereof is selected from the group consisting of partially fluorinated carboxylic acids or salts thereof and fully fluorinated carboxylic acids or salts thereof.

Method of removing fluorinated carboxylic acid from aqueous liquid

A coating composition having (i) an aqueous dispersion of fluoropolymer particles comprising a non-melt processible polymer of tetrafluoroethylene, (ii) a fluorinated surfactant, (iii) a non-ionic non-fluorinated surfactant and (iv) a non-fluorinated polymer, wherein the fluorinated surfactant is selected from fluorinated carboxylic acids or salts thereof of the general formula (I):[R&#x2014;O-L-COO]X&#x2003;&#x2003;(I)wherein L represents a linear partially or fully fluorinated alkylene group or an aliphatic hydrocarbon group, Rrepresents a linear partially or fully fluorinated aliphatic group or a linear partially or fully fluorinated aliphatic group interrupted with one or more oxygen atoms, Xrepresents a cation having the valence i and i is 1, 2 or 3.

Coating composition

The present invention provides a fluorinated surfactant having the general formula:[R&#x2014;(O)&#x2014;CQH&#x2014;CF&#x2014;O]&#x2014;R&#x2014;G&#x2003;&#x2003;(I)wherein Rrepresents a partially or fully fluorinated aliphatic group optionally interrupted with one or more oxygen atoms, Q is CFor F, R is an aliphatic or aromatic hydrocarbon group, G represents a carboxylic or sulphonic acid or salt thereof, t is 0 or 1 and n is 1, 2 or 3. The surfactant is particularly useful in polymerizing fluorinated monomers in an aqueous emulsion polymerization.

Growing community of inventors

Neuoetting, Germany

Michael Jürgens