E.i. Dupont De Nemours and Company

Chromis Fiberoptics, Inc.

Dupont Displays Inc

University of Florida Research Foundation, Incorporated

University of Kansas-ku Medical Center Research Institute

Christopher P Junk

Mark Andrew Harmer

Jemma Vickery

Leo Ernest Manzer

Che-Hsiung Hsu

Keith Ward Hutchenson

Thomas Foo

Aaron Minter

Zoe Schnepp

Andrew Edward Feiring

Whitney Ryan White

Berlyn R Mellein

Mark F Teasley

Charles J Dubois

Viacheslav Alexandrovich Petrov

Frank Peter Uckert

Frank L Schadt, Iii

Zhen-Yu Yang

Sunghan Kim

Amy Qi Han, Legal Representative

Natalie Daoud

Sheng Peng

Ming-Hong Hung

Daniel David Lecloux

Mark B Shiflett

Wallace Gregory Sawyer

Shiva Prakash

Steven Raymond Lustig

Ralph Birchard Lloyd

Donald Douglas May

Jing Chung Chang

Phan Linh Tang

Yuanfeng Liang

Gregory Scott Blackman

Stephen E Burkhardt

Mark Brandon Shiflett

Matthew Arthur Page

Peter Anthony Fox

Mark David Wetzel

Shuhong Wang

Brandon Alexander Krick

Robert Miller

Abby Noelle Harders

Joseph P McKeown

Andrew Edward Feiging

Viascheslav A Petrov

Zheng-Yu Yang

Joseph P Mckeown

Frank Leonard Iii Schadt

Described herein are articles for separating gases. The article includes an amorphous fluorinated copolymer containing one or more types of fluorinated dioxolane ring monomers, and one or more types of fluorinated non-dioxolane ring monomers, optionally with crosslinking between the fluorinated copolymer chains. The copolymers of fluorinated dioxolane ring monomers and fluorinated non-dioxolane ring monomers show a large differential in the permeability of certain gases compared with other gases. The resulting polymer membranes have superior selectivity and reliability performance in certain gas separations compared with previous compositions known to the art. Methods for making and using the article described are also provided.

Gas separation articles composed of amorphous fluorinated copolymers of dioxolanes and other fluorinated ring monomers and methods of making and using thereof

Described herein are separation articles such as, for example, films, membranes and the like separating at least one component from a gaseous mixture comprising two or more components comprising difluoromethane (HFC-32, CHF) and pentafluoroethane (HFC-125, CFH). The disclosed articles include a 'selective layer' that is selectively permeable for the desired component to be separated from the gas mixture. The selective layer is composed of an amorphous fluorinated copolymer. Optionally, the article may include other layers which serve various purposes such as, for example, a porous support layer, a “gutter layer,” which allows the permeate gas to pass from the selective layer to the porous layer with minimal flow impedance, and a protective layer, which protects the selective layer from fouling. Each component of the separation articles described herein and methods for making and using the same are provided below.

Separation articles and methods for using the same for selectively removing difluoromethane from a gasesous mixture

Described herein are optically transparent and semipermeable windows composed of at least one layer of an amorphous crosslinked fluorinated copolymer. Also disclosed are a process and apparatus for three-dimensional continuous liquid interface production (CLIP) printing using the windows described herein. The amorphous crosslinked fluorinated copolymers have improved mechanical properties, thereby reducing the susceptibility of the window to brittle failures such as cracking and crack propagation. The gas permeable windows have superior durability and reliability compared with other available structures and compositions.

Gas permeable windows composed of amorphous crosslinked fluorinated copolymers and methods of making and using thereof

Described herein are articles for separating gases. The article includes a selective layer consisting of a crosslinked amorphous fluorinated copolymer containing one or more types of fluorinated ring monomers, with crosslinking between the fluorinated copolymer chains. The crosslinking improves the mechanical properties of the fluoropolymer, thereby permitting use of polymer types which would otherwise be excessively brittle. The resulting crosslinked polymer membranes have superior selectivity and reliability performance compared with previous compositions known to the art. Methods for making and using the article described are also provided.

Gas separation articles composed of amorphous crosslinked fluorinated copolymers and methods of making and using thereof

A low-wear fluoropolymer composite body comprises at least one fluoropolymer and additive particles dispersed therein. Also provided is a process for the fabrication of such a fluoropolymer composite body. The composite body exhibits a low wear rate for sliding motion against a hard counterface, and may be formulated with either melt-processible or non-melt-processible fluoropolymers.

Low-wear fluoropolymer composites

Curing fluoroelastomers with curing agents of formulas (I), (II), (III), and (IV): wherein each of R, R, R, R, R, R, R, and R, is selected from the group consisting of H; halogen atom; C1 to C4 alkyl groups in which the alkyl group is linear, branched, or cyclic; OR'; and aromatic groups;

Curing agents for fluoroelastomers

This invention relates to compounds useful as ionic liquids that are based on an N-substituted pyrrolidinone and incorporate a pendant ammonium cation that is spaced from the pyrrolidone ring by a variable length linker.

N-substituted pyrrolidonium ionic liquids with expanded linker

This invention relates to compounds useful as ionic liquids that are based on an N-substituted pyrrolidinone and incorporate a pendant ammonium cation that is spaced from the pyrrolidone ring by a variable length linker; and to methods of carbon dioxide removal in which they may be used.

Carbon dioxide removal and ionic liquid compounds useful therein

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

Functionalized N-substituted pyrrolidonium ionic liquids

A process for manufacture of hydrofluoroalkanesulfonic acid with at least one hydrogen bonded to the carbon atom adjacent to the carbon atom bonded to the sulfonic acid group comprising: contacting a fluoroolefin with sulfite in an aqueous solution adjusted to about pH 4 to pH 12; removing water from the solution to form a solid; directly treating the solid with oleum; and distilling the hydrofluoroalkanesulfonic acid therefrom. Also a process for manufacture of potassium hydrofluoroalkanesulfonate in high purity is described.

Manufacture of hydrofluoroalkanesulfonic acids

The invention relates to conductive polymer composites comprising a first layer comprising at least one electrically doped conductive polymer and a second layer comprising at least one material selected from a colloid-forming polymeric acid, a salt of a colloid-forming polymeric acid, a non-polymeric fluorinated organic acid, and a salt of a non-polymeric fluorinated organic acid.

Conductive polymer composites

This invention relates to compounds useful as ionic liquids that are based on an N-substituted pyrrolidinone and incorporate a pendant ammonium cation that is spaced from the pyrrolidone ring by a variable length linker, which compounds may be represented by the structure of the following Formula I: wherein:

N-substituted pyrrolidonium ionic liquids

Hydrofluoroalkanesulfonates of the general formula R&#x2014;O&#x2014;CXH&#x2014;CX&#x2014;SOM, where R is selected from the group consisting of alkyl groups, functionalized alkyl groups, and alkenyl groups; X is selected from the group consisting of hydrogen and fluorine with the proviso that at least one X is fluorine; and M is a cation, are made by reacting fluorovinyl ether with aqueous sulfite solution. Organic onium hydrofluoroalkanesulfonates are useful as ionic liquids and photoacid generators.

Hydrofluoroalkanesulfonic acids and salts from fluorovinyl ethers

Growing community of inventors

Wilmington, DE, United States of America

Christopher P Junk