E.i. Dupont De Nemours and Company

The Chemours Company Fc, LLC

Other

Trinity Western University

Jon Lee Howell

Mario Joseph Nappa

Barbara Haviland Minor

Thomas Joseph Leck

Nandini C Mouli

Andrew Edward Feiring

Erik William Perez

Viacheslav Alexandrovich Petrov

Chadron Mark Friesen

Alfred Waterfeld

Joseph Stuart Thrasher

Velliyur Nott Mallikarjuna Rao

Ekaterina N Swearingen

Gregory Alan Bell

Krista Lynn Laugesen

Kevin Anthony Hay

Alice Elizabeth Van Der Ende

Robert Clayton Wheland

Keith Ward Hutchenson

Clay Woodward Jones

Alexander Borisovich Shtarov

Sharon Ann Libert

Ireneusz Nowak

Xian Liang

H Carl Walther

Allen Capron Sievert

Paul Douglas Brothers

Subhash Vishnu Gangal

Hans Schonemann

Val J Krukonis

Norm Gitis

William C Ziegenhain

Gregory Allen Chapman

Deepak Perti

Francisco Jose Freire

Kaye L Motz

Adam Paul Smith

Craig T Barker

Eileen G Edwards

Michael A Hofmann

Benson Jacob Jelier

Charles Gao

Anthony Joseph Huffmann

Pelin Hacarlioglu

David Gareth Vaughan Jones

Michael A Hofman

Schmitz Corneille

Thomas Michael Band

Hans Jurgen Schonemann

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.

This disclosure relates to a process for extracting a perfluoropolyether. The process involves: (a) contacting a solvent comprising a liquid or supercritical carbon dioxide with a lubricating grease comprising a thickener and the perfluoropolyether in an extraction zone to form an extraction solution comprising an extracted perfluoropolyether; and (b) recovering the extracted perfluoropolyether from the extraction solution; wherein the recovered extracted perfluoropolyether comprises no more than about 2 wt % of the thickener.

Perfluoropolyether extraction processes

This disclosure relates to a process for extracting a perfluoropolyether. The process involves: (a) contacting a solvent comprising a liquid or supercritical carbon dioxide with a lubricating grease comprising a thickener, an extraction aid material, and the perfluoropolyether in an extraction zone to form an extraction solution comprising an extracted perfluoropolyether; and (b) recovering the extracted perfluoropolyether from the extraction solution; wherein the recovered extracted perfluoropolyether comprises no more than about 2 wt % of the thickener.

Recovery of perfluorinated polyether oils from grease matrices incorporating extraction aids by carbon dioxide extraction

A composition comprising a mixture of fluoropolyether acids or salts having a number average value of about 800 to about 2500 g/mol. The amount of fluoropolyether acids or salt in the mixture having a molecular weight of not more than 500 g/mol is not more than 50 ppm by weight of the total amount of fluoropolyether acids or salts in the mixture. The amount of fluoropolyether acids or salts in the mixture having a molecular weight of 2500 g/mol or greater is not more than 40% by weight of the total amount of fluoropolyether acids or salts in the mixture. Preferably the fluoropolyether acids or salts comprise an anionic group selected from the group consisting of carboxylate, sulfonate, sulfonamide anion and phosphonate. Also disclosed is an aqueous dispersion polymerization process for fluoropolymer manufacture employing polymerization agent comprising the specified mixture of fluoropolyether acids or salts.

Aqueous polymerization of fluorinated monomer using a mixture of fluoropolyether acids or salts

The present invention relates to anhydrous tetraalkyl pnictogen perfluoroalkoxy salts and a process to produce anhydrous tetraalkyl pnictogen perfluoroalkoxy salts. The process involves contacting a hydrofluoroether and an amine to produce a tetraalkyl pnictogen perfluoroalkoxy salt in the presence of a solvent. The present invention also relates to processes of preparing fluoroalkyl ether acid fluoride polymers using tetraalkyl pnictogen perfluoroalkoxy salt. The present invention further relates to some novel fluorinated alkyl polyether polymers.

Quarternary ammonium perfluoroalkoxy salts for preparation of perfluoropolyethers

Amorphous hydrofluoroolefin telomers are prepared by a free-radical polymerization process conducted at high temperature and pressure in the presence of non-monomeric chain transfer agent.

Processes for preparing low molecular weight hexafluoropropylene-olefin cotelomers

The present disclosure relates to compositions comprising at least one fluoroolefin and an effective amount of a stabilizer comprising at least one ascorbic acid, terephthalate, or nitromethane, or mixtures thereof. 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.

Ascorbic acid, terephthalate and nitromethane stabilizers for fluoroolefins

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 relates to compositions comprising iodotrifluoromethane and an effective amount of at least one stabilizer selected from the group consisting of hindered phenols, thiophosphates, butylated triphenylphosphorothionates, organo phosphates, phosphites, aryl alkyl ethers, terpenes, terpenoids, epoxides, fluorinated epoxides, oxetanes, ascorbic acid, thiols, lactones, thioethers, amines, nitromethane, alkylsilanes, benzophenone derivatives, aryl sulfides, divinyl terephalic acid, diphenyl terephalic acid, ionic liquids, and mixtures thereof. These stabilized iodotrifluoromethane compositions may be useful as working fluids in multiple applications including cooling apparatus, such as refrigeration, air-conditioning, chillers, and heat pumps.

Compositions comprising iodotrifluoromethane and stabilizers

The present disclosure relates to compositions comprising at least one fluoroolefin and an effective amount of a stabilizer comprising at least one phosphorus-containing compound selected from the group consisting of thiophosphates, butylated triphenylphosphorothionates, and organophosphates. 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.

Phosphorus-containing stabilizers for fluoroolefins

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Bear, DE, United States of America

Jon Lee Howell