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Peter Gideon Gelblum, Velliyur Nott Mallikarjuna Rao, Charles Joseph Noelke, Norman Herron: Disposal of fluoroform (HFC-23). E I du Pont de Nemours and Company, October 19, 2004: US06806396 (12 worldwide citation)

The present invention relates to the co-pyrolysis of fluoroform and chlorodifluoromethane to form a mixture of useful fluoroolefin and saturated HFCs, notably, tetrafluoroethylene and hexafluoropropylene and CF


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Barry Asher Mahler, Ralph Newton Miller, Charles Joseph Noelke: Azeotropic or azeotrope-like compositions of tetrafluoroethane and chlorotetrafluoroethane. E I du Pont de Nemours and Company, James E Shipley, March 3, 1998: US05723429 (5 worldwide citation)

The disclosure relates to separating 1,1,2,2 tetrafluoroethane (HFC-134) and 1,1,1,2 tetrafluoroethane (HFC-134a) from each other and/or from fluorocarbon impurities by using extractive distillation with an extractive agent comprising an alcohol. Examples of suitable extractive agents comprise at le ...


4
Ralph Munson Aten, Kenneth Wayne Leffew, Ralph Birchard Lloyd, Charles Joseph Noelke: Fluoropolymer produced by aqueous polymerization using dispersed particulate of fluorinated lonomer produced in situ. E I du Pont de Nemours and Company, November 15, 2011: US08058376 (2 worldwide citation)

A process for making an aqueous dispersion of fluoropolymer particles by polymerizing in a first polymerization step at least one fluorinated monomer having an ionic group in an aqueous polymerization medium in the presence of initiator, the polymerizing providing dispersed particulate of fluorinate ...


5
Charles Joseph Noelke, Mark Brandon Shiflett: Capture of fluorinated vinyl monomers using ionic liquids. E I du Pont de Nemours and Company, July 15, 2014: US08779220 (1 worldwide citation)

A method for capturing certain fluorinated vinyl monomers from a gaseous mixture using ionic liquids is described. The gaseous mixture is contacted with at least one ionic liquid, whereby at least a portion of the fluorinated vinyl monomer is absorbed by the ionic liquid. The method is useful for re ...


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Kenneth Wayne Leffew, Ralph Birchard Lloyd, Charles Joseph Noelke: Fluoropolymer particles having a nucleus of fluorinated ionomer. E I du Pont de Nemours and Company, September 16, 2014: US08835547

Particles comprising a bulk of fluoropolymer and a nucleus of fluorinated ionomer, dispersions of such particles, articles and coatings made from such particles.


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Kenneth Wayne Leffew, Ralph Birchard Lloyd, Charles Joseph Noelke: Fluorinated ionomer produced by aqueous polymerization using dispersed particulate of fluorinated ionomer. E I du Pont de Nemours and Company, May 7, 2013: US08436053

A process for making an aqueous dispersion of fluorinated ionomer particles by providing dispersed particulate of fluorinated ionomer in an aqueous polymerization medium and polymerizing at least one fluorinated monomer having an ionic group in the aqueous polymerization medium in the presence of th ...


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Ralph Munson Aten, Kenneth Wayne Leffew, Ralph Birchard Lloyd, Charles Joseph Noelke: Fluorinated ionomer produced by aqueous polymerization using dispersed particulate of fluorinated ionomer produced in situ. E I du Pont de Nemours and Company, May 7, 2013: US08436054

A process for making an aqueous dispersion of fluorinated ionomer particles by polymerizing in a first polymerization step at least one fluorinated monomer having an ionic group in an aqueous polymerization medium in the presence of initiator, the polymerizing providing dispersed particulate of fluo ...


9
Kenneth Wayne Leffew, Ralph Birchard Lloyd, Charles Joseph Noelke: Fluoropolymer produced by aqueous polymerization using dispersed particulate of fluorinated ionomer. E I du Pont de Nemours and Company, April 10, 2012: US08153738

A process for making an aqueous dispersion of fluoropolymer particles by providing dispersed particulate of fluorinated ionomer in an aqueous polymerization medium and polymerizing at least one fluorinated monomer in the aqueous polymerization medium in the presence of the dispersed particulate of f ...


10
Charles Joseph Noelke, Clay Woodward Jones, Michael Gene McClusky, David William Johnson: Removing fluorosurfactant from aqueous fluoropolymer dispersions. E I du Pont de Nemours and Company, September 7, 2010: US07790041

A process for reducing the fluorosurfactant content of an aqueous fluoropolymer dispersion by filling a shipping container with fluoropolymer dispersion and contacting the dispersion with a fluorosurfactant sorbent in the shipping container.