Ausimont S.r.l.

Ausimont

3M Innovative Properties Company

Clemson University

Research, Incorporated

Electric Power Research Institute Incorporated

Gas Research Institute

Darryl D DesMarteau

Walter Navarrini

Stefan P Kotun

Alessandro Malacrida

Charles W Martin

Vittorio Montanari

Ismail Kul

Adolph L Beyerlein

Viatcheslav A Petrov

Lawrence A Ford

Yuan Xie

Letanzio Bragante

Stefan Kotun

John D Anderson

Perfluoroalkyl compounds and their methods of use and manufacture

Refrigerant compositions include mixtures of at least three different components, including a fluorinated ether with at least one of a second fluorinated ether, an ether and a fluorinated hydrocarbon. Also, methods for cooling a body include compressing such a refrigerant composition and bringing the body into heat transfer relation to it. The disclosed refrigerant compounds have refrigerant-significant properties similar to those of R-22, and they can be employed in place of or as drop-in substitutes in refrigeration apparatus designed for R-22 application.

Ternary refrigerant compositions containing fluorinated ethers as replacements for R-22

Refrigerant compositions include mixtures of at least three different components, including a fluorinated sulfur-containing compound with at least one of a fluorinated ether or a fluorinated hydrocarbon. Also, methods for cooling a body include compressing such a refrigerant composition and bringing the body into heat transfer relation to it. The disclosed refrigerant compounds have refrigerant-significant properties similar to those of R-22, and they can be employed as drop-in substitutes in refrigeration apparatus designed for R-22 application.

Ternary refrigerant compositions which contain perfluoroorgano sulfur compounds as replacements for R-22

Sulfonated perfluorovinyl functional monomers

The present invention provides a monomer having the formula A&mdash;B, wherein A is represented by Formula I:

Novel perfluorinated sulfonyl monomers and polymers and membranes made therefrom are provided. The fluorocarbon monomers have the general formula: ##STR1## wherein X is CH or N, I is H, K, Na, or a Group I or II metal, R.sub.f is one or more fluorocarbon group, including fluorocarbon ethers and/or sulfonyl groups and/or perfluoro-non-oxy acid groups, R.sub.f, is C.sub.n F.sub.2n+1 (n=0,1,2, . . .), Y is C.sub.n F.sub.2n+1 (n=0,1,2, . . .) and m is 0 or 1. The monomers are made from the non-oxy superacid groups ##STR2## Copolymers of the above monomers with other monomeric material such as tetrafluoroethylene are also provided. These copolymers may then be cast into ionomer membranes and other structures for use in electrochemical processing.

Copolymers of tetrafluoroethylene and perfluorinated sulfonyl monomers

A process for preparing fluorinated compounds belonging to the classes:

Process for preparing fluorinated compounds, and novel products

A process for preparing perfluoro-oxyaziridines of formula: ##STR1## where R.sub.x and R.sub.y, like or different from each other, are F or a C.sub.1 -C.sub.10, perfluoroalkyl group, R.sub.z is a C.sub.1 -C.sub.10 -perfluoroalkyl group. The process consists in reacting the corresponding perfluoroimine with a perfluoroalkyl fluoroformyl peroxide R.sub.f OOC(O)F, in the presence of an alkali metal fluoride MF, at a temperature ranging from -40.degree. to +50.degree. C.

Process for preparing perfluoro-oxyaziridines

A process for preparing perfluoro-oxyaziridines of formula: ##STR1## where R.sub.x is F, a C.sub.1 -C.sub.10 perfluoroalkyl group or a --NR.sup.f.sub.2 group in which R.sup.f is a C.sub.1 -C.sub.10 perfluoroalkyl group, R.sub.y is F or a C.sub.1 -C.sub.10 perfluoroalkyl group and R.sub.z is a C.sub.1 -C.sub.10 perfluoroalkyl group. The process consists in reacting the corresponding perfluoroimine with an aromatic peroxyacid having a benzenic nucleus, in an aprotic solvent, at a temperature ranging from -50.degree. to +100.degree. C.

Method for preparing perfluoro-oxaziridines

Process for preparing alkali-metal or ammonium salts of fluorinated tertiary alcohols

Process for producing salts of fluorinated alcohols

Perfluorinated cyclic hemiketals of formula: ##STR1## where n=1-6, m=2-3, and their corresponding perfluoridiketones. The latter are prepared by means of perfluoroalkylation reaction of diacyl fluorides with perfluoroalkyl-trialkyl silanes. The perfluorodiketones can be then reacted with H.sub.2 O in order to obtain said cyclic hemiketals.

Perfluorinated cyclic hemiketals, corresponding perfluorodiketones and

New perfluoroaminoether polymers and a process for preparing them which comprises copolymerizing fluorinated olefins with oxaziridines in the presence of ultra-violet radiations or of chemical initiators.

Polyperfluoroaminoethers

The invention relates to a process for preparing perhalogenated olefins which comprises reacting a perhalogenated alkane, having at least one atom of a halogen different from fluorine, with a tris-dialkylamino phosphine at temperature not higher than 60.degree. C.

Process for preparing perhalogenated olefins

The present invention relates to novel fluorinated alkoxyimines having the formula:

New fluorinated alkoxy imines and their N-chloro- and

Process for the synthesis of perfluoroalkenyl-sulfonyl fluorides of formula:

Growing community of inventors

Clemson, SC, United States of America

Darryl D DesMarteau