E.i. Dupont De Nemours and Company

Compact Membrane Systems, Inc.

The Chemours Company Fc, LLC

University of Pennsylvania

Commonwealth Scientific and Industrial Research Organisation

Dupont Displays Inc

E.i. Du Pont De Nmeours and Company

Cms Technologies Holdings, Inc.

Andrew Edward Feiring

Viacheslav Alexandrovich Petrov

Frank L Schadt, Iii

William Brown Farnham

Bruce E Smart

Barbara Haviland Minor

Mario Joseph Nappa

Thomas Joseph Leck

Jon Lee Howell

Nandini C Mouli

Jerald Feldman

Robert Clayton Wheland

Zhen-Yu Yang

Sudipto Majumdar

Ning Shangguan

Frank Peter Uckert

Christopher P Junk

Weiming Qiu

Christopher Marc Doyle

Velliyur Nott Mallikarjuna Rao

Brian C Auman

Mark Gerrit Roelofs

Ekaterina N Swearingen

Colin Anolick

Che-Hsiung Hsu

Mark Andrew Harmer

Wilson Tam

Samuel David Arthur

Michael Fryd

Peter Arnold Morken

Stephan James McLain

Peter Michael Murphy

Mark F Teasley

Gary N Taylor

Stuart Marshall Nemser

Paul Gregory Bekiarian

Charles J Dubois

Fredrick Claus Zumsteg, Jr

Shlomo Rozen

Theodore Arthur Treat

Charles Winfield Stewart

Zoe Schnepp

Patrick Edward Lindner

Jessica Sinks

Lap T Cheng

Allen Capron Sievert

Carl G Krespan

Ming-Hong Hung

Paul R Resnick

Ashokkumar Bhikkappa Shenvi

Charles W Stewart, Sr

Ronald Earl Uschold

William Howard Tuminello

Jose Manuel Rodriguez-Parada

Robert Daniel Lousenberg

Gordon Mark Cohen

Virgil Percec

Glenn S Shealy

Peter Rose

David P Higley

Daniel Campos

Sunghan Kim

Michael Karl Crawford

Hoang Vi Tran

Deepak Perti

Mureo Kaku

Amy Qi Han, Legal Representative

Eugene Lopata

Satoko Iwato

Larry L Berger

Roger John Zipfel

Daniela A Wilson

Christopher J Wilson

Susan Kuharcik Choi

Natalie Daoud

William E Estes

Lois Lo-I Lin

Hans O Spauschus

Yosuke Koizumi

Schmitz Corneille

Jonathan Lazzeri

Takahasi Tatsuhiro

Michael Mocella

Yakov Brichko

Hanne A K Blau

Stephan James Mclain

Jessica Flatter

Frank Leonard Iii Schadt

Frank Leonard Schadt Iii

Frank L Iii Schadt

Bruce Edmund Smart

This invention discloses a thin-film composite membrane and process for the separation of carbon dioxide from non-hydrophilic gases such as methane, hydrogen, and nitrogen. The thin-film composite membrane has a gas-separation layer and a nonporous high-diffusion-rate layer, and has carbon dioxide to non-hydrophilic gas selectivity that is greater than the intrinsic selectivity of the gas-separation layer alone.

Carbon dioxide separation membranes and process

Novel copolymers that are fluoropolymers including a first repeat unit that is fluorinated and cyclic and a second repeat unit from a trifluorovinyl methylene ether monomer having sulfur or sulfone functionality in the pendant group are disclosed. The copolymers have relatively high gas permeability as a result of a cyclic repeat unit in the copolymer backbone and ionomers from oxidation of the sulfur containing functionality are particularity useful in the cathode structure of a proton exchange membrane fuel cell.

Gas permeable fluoropolymers and ionomers

The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be an epoxide, fluorinated epoxide or oxetane, or a mixture thereof with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.

Epoxide and fluorinated epoxide stabilizers for fluoroolefins

The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be an epoxide, fluorinated epoxide or oxetane, or a mixture thereof with other stabilizers. The stabilized compositions may be useful in cooling to apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.

Membranes having a permselective active layer of a copolymerized perfluorinated monomer and an non-fluorinated alkylvinylester monomer demonstrate superior selective permeability performance for separating gas mixtures compared to membranes of exclusively perfluorinated polymers. Preferred active layer compositions are copolymers of perfluoro-2,2-dimethyl-1,3 dioxole (PDD) copolymerized with an alkylvinyl ester such as vinyl acetate, and vinyl pivalate, and with alkylvinyl esters that are substantially hydrolyzed to provide copolymerized vinyl alcohol functionality. The membranes can have a thin, high diffusion rate, 'gutter layer' of a fluorinated polymer highly permeable to nitrogen positioned between the active layer and a porous support layer. A novel copolymer effective in selectively permeable membranes is a copolymer of PDD and an alkylvinyl ester compound having the formula HC&#x2550;CHOC(O)Rin which Ris a linear or branched alkyl group of from 2 to 5 carbon atoms.

Amorphous fluorinated copolymer gas separation membranes

Composite membranes comprised of at least two layers, one of the layers being a silver ionomer and a second layer which is a fluorinated polymer with certain permeability properties, are especially useful for the separation of alkanes from alkenes, Particularly useful is a three-layer composite membrane in which a porous layer is laminated to the second layer.

Thin film composite membranes for separation of alkenes from alkanes

A metal exchanged fluorinated ionomer is a copolymer minimally including repeating units of (i) a polymerized derivative of a perfluorinated cyclic or cyclizable monomer and (ii) a strong acid highly fluorinated vinylether compound in which the acid moiety is exchanged with a cation of a Group 11 metal. Metal exchanged fluorinated ionomers are readily soluble and can be formed into thin, selectively gas permeable membranes by solution deposition methods. These membranes are suitable for separating olefins from gas olefin/paraffin mixtures. Good selectivity and transmembrane flux can be obtained without humidifying the membrane feed gas mixture.

Membrane separation of olefin and paraffin mixtures

A highly fluorinated polymer is very useful as an acid catalyst. The highly fluorinated polymer has at least two repeating unit types that are the polymerized derivatives of a perfluorinated cyclic or cyclizable compound and a highly fluorinated vinyl ether compound having a sulfur containing functional group. The polymer can be formed by radical copolymerization of the fluorinated monomers with the sulfur-containing functional group in sulfonyl fluoride form (&#x2014;SOF) that is subsequently converted to sulfonic acid form (&#x2014;SOH). The highly fluorinated polymer can be used to advantage in a solution comprising an aprotic, polar organic solvent that has a dielectric constant of at least 15 and preferably is free of hydroxyl functional groups. Suitable solvents are those in which the polymer is soluble to at least 1 wt %. Hydroxyl group-containing protic, polar organic solvents are less preferred. The highly fluorinated polymer can be an effective heterogeneous catalysts when used in form of solid, fine particles insolubly suspended in or in contact with a fluid reaction mass.

Polymeric acid catalysis

A membrane separation process using a highly fluorinated polymer membrane that selectively permeates water of an aqueous ionic liquid solution to provide dry ionic liquid. Preferably the polymer is a polymer that includes polymerized perfluoro-2,2-dimethyl-1,3-dioxole (PDD). The process is also capable of removing small molecular compounds such as organic solvents that can be present in the solution. This membrane separation process is suitable for drying the aqueous ionic liquid byproduct from precipitating solutions of biomass dissolved in ionic liquid, and is thus instrumental to providing usable lignocellulosic products for energy consumption and other industrial uses in an environmentally benign manner.

Membrane separation of ionic liquid solutions

The present invention relates to compositions comprising at least one fluoroolefin and an effective amount of stabilizer that may be a terpene, terpenoid or fullerene; or a mixture of a terpene, terpenoid or fullerene with other stabilizers. The stabilized compositions may be useful in cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps, as well as in applications as foam blowing agents, solvents, aerosol propellants, fire extinguishants, and sterilants.

Terpene, terpenoid, and fullerene stabilizers for fluoroolefins

The present invention concerns the design of an environmentally friendly and efficient fluorous phase based on dendritic architectures containing short semifluorinated groups on their periphery.

Fluorous dendrimers and methods for production thereof

There are provided electrically conducting polymer compositions comprising an electrectically conductive polymer or copolymer and an organic solvent wettable fluorinated acid polymer. Electrically conductive polymer materials are derived from thiophene, pyrrole, aniline and polycyclic heteroaromatic precursor monomers. Non-conductive polymers derived from alkenyl, alkynyl, arylene, and heteroarylene precursor monomers. The organic-solvent wettable fluorinated acid polymer is fluorinated or highly fluorinated and may be colloid-forming. Acidic groups include carboxylic acid groups, sulfonic acid groups, sulfonimide groups, phosphoric acid groups, phosphonic acid groups, and combinations thereof. The compositions can be used in organic electronic devices.

Electrically conductive polymer compositions

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Wilmington, DE, United States of America

Andrew Edward Feiring