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| Number | Title | Issue Date |
| 8026391 | Potassium perfluoroalkanesulfonate and method for producing the same This method for producing a potassium perfluoroalkanesulfonate includes an electrochemical fluorination step in which an alkanesulfonyl halide compound is subjected to electrochemical fluorination in anhydrous hydrogen fluoride, thereby to generate a production gas ... | 09/27/2011 |
| 7897807 | Manufacture of hydrofluoroalkanesulfonic acids 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... | 03/01/2011 |
| 7531689 | Fluorosulfates of hexafluoroisobutylene and its higher homologs and their derivatives Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2═C(R)CF2OSO2F, wherein R is a linear branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon ato... | 05/12/2009 |
| 7368500 | Film-forming silicone resin composition A film-forming silicone resin composition, comprising a reaction product obtained by a method comprising the step of heating (A) an alkoxysilyl-functional organopolysiloxane obtained by running an equilibration reaction with components comprising (A1) a polydiorgano... | 05/06/2008 |
| 7321054 | Method of producing poly(ortho-methylphenol) Poly(ortho-methylphenol) is obtainable at high purities and yields using industrial processes by causing a secondary amine and formaldehyde to react with a polyphenol (first step), and then breaking down the aminomethyl group of the obtained poly(ortho-aminomethyl)p... | 01/22/2008 |
| 7276624 | Fluorosulfates of hexafluoroisobutylene and its higher homologs Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2═C(R)CF2OSO2F, wherein R is a linear, branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon at... | 10/02/2007 |
| 7253315 | Process for preparing fluorocarboxylic acids A fluorocarboxylic acid preparation process which includes hydrolyzing fluorocarboxylic acid fluoride in the presence of an aqueous sulfuric acid solution to form a reaction product containing a fluorocarboxylic acid and hydrogen fluoride (present as hydrofluoric ac... | 08/07/2007 |
| 7234692 | Column tray A column tray assembly includes a tray having passages formed therein. The tray is a multifunction tray and is configured to receiving appropriate superstructures which can be selected according to the respective use of the assembly. Superstructures which communicat... | 06/26/2007 |
| 7220914 | Zwitterionic compounds and photovoltaic cells containing same Zwitterionic compounds, photovoltaic cell charge carrier layers containing such compounds, photovoltaic cells including such charge carrier layers, and related methods are disclosed. ... | 05/22/2007 |
| 7169333 | Antistatic agent The present invention provides an antistatic agent of the formula (I) R—SO3NR′R″R′″R″″ (I) wherein R represents a perfluorinated cyclic or linear, branched or unbranched carbon chain having 1 to 30 carbon atoms, R... | 01/30/2007 |
| 6849374 | Photoacid generators and photoresists comprising same This invention relates to new photoacid generator compounds and photoresist compositions that comprise such compounds. In particular, the invention relates to photoacid generator compounds that generate an α,α-difluoroalkyl sulfonic acid upon exposure to activatin... | 02/01/2005 |
| 6765112 | Fluorinated onium salts A process that can be used for manufacturing a tetraalkylonium perfluoroalkylsulfonate is provided. The process comprises contacting a tetraalkylonium halide with a metal perfluoroalkyl sulfonate to produce a mixture; allowing the second mixture to produce an aqueou... | 07/20/2004 |
| 6632960 | Diaryliodonium salt catalysts made from iodotoluene and a method for preparing them Diaryliodonium salts are disclosed, as well as a method for preparing them, in which one of the aryl groups bonded to the positively-charged iodine ion contains a methyl substituent, and the other one contains a hydroxyl-substituted alkoxy group. The salt... | 10/14/2003 |
| 6509495 | Selective hydrodehalogenation method The invention concerns a selective hydrodehalogenation method characterised in that it comprises a step which consists in contacting a substrate including a sp 3 hybridisation carbon atom bearing an electro-attracting group and at least a fluorine atom, a... | 01/21/2003 |
| 6479698 | Method for preparing sulphonate salts The invention concerns a method for preparing sulphonate salts, alkaline or alkaline-earth, corresponding to anion of general formula (I):(R--CF2 --SO3-)n, through alkaline hydrolysis of sulphonyl chlorides corr... | 11/12/2002 |
| 6365769 | Perfluoroalkyl halides and derivatives Novel mixtures of perfluoroalkyl halides and derivatives thereof are described. These mixtures contain some compounds with a straight perfluoroalkyl group and some with a branched perfluoroalkyl group. Methods of preparation and use are also described.... | 04/02/2002 |
| 6172238 | Process for manufacturing 1-[3-cyclopentyl-2(R)-[1(R)-hydroxycarbamoyl)-2-(3,4,4-trimethyl-2,5-dioxo -1-imidazolidinyl)ethyl]propionyl]piperidine A process manufactures of a compound of formula: ##STR1## and unique intermediates.... | 01/09/2001 |
| 6140436 | Fluorinated ionomers and their uses This invention concerns ionomers comprising a substantially fluorinated, but not perfluorinated, polyethylene backbone having pendant groups of fluoroalkoxy sulfonic acids and the metal salts thereof, and with the uses of said ionomers in electrochemical ... | 10/31/2000 |
| 6111136 | Method for preparation of perfluoroalcanecarboxylic and perfluoroalkanesulfonic acids The invention consists of a new method for preparing perfluoroalcanecarboxylic and perfluoroalcanesulfonic acids in which ozone is made to react, in a protic environment, upon a perfluoroalkyl chain comprising at least one oxydizable chemical group.... | 08/29/2000 |
| 5859288 | Reagent and process for the synthesis of oxysulphide-containing fluorine-containing organic derivatives The invention relates to a reagent which is useful for the synthesis of oxysulphide-containing fluorine-containing organic derivatives by reacting with an oxide of sulphur, especially sulphur dioxide, characterized in that it comprises: a) a fluorocarboxy... | 01/12/1999 |
| 5753776 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 05/19/1998 |
| 5710320 | Diaryliodonium fluoroalkyl sulfonate salts and a method of making The present invention provides a convenient, simple, safe and efficient one-pot method for the synthesis of a number of diarlyiodonium triflate salts which does not involve sulfuric acid and which eliminates the need for any counter-ion exchange processes... | 01/20/1998 |
| 5674949 | Liquid-phase fluorination This invention pertains to a method for liquid-phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 10/07/1997 |
| 5672741 | Process for the hydrolysis of fluorinated sulphonyl fluorides A process for base hydrolysis of a fluorinated sulphonyl fluoride by treatment of the fluoride with at least one mole equivalent of water in a basic solvent for a sufficient time to obtain a salt of a corresponding fluorinated sulphonic acid with the basi... | 09/30/1997 |
| 5585507 | Alkylsulfonium salts and photoresist compositions containing the same A photoresist composition containing an alkylsulfonium salt compound represented by the following general formula (I): ##STR1## Wherein R1 and R2 may be the same or different, each being a linear, branched or cyclic C1 | 12/17/1996 |
| 5571870 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 11/05/1996 |
| 5539059 | Perfluorinated polyethers This invention pertains to perfluoropolyethers and perhalogenated chlorofluoropolyethers that can be prepared by fluorinating addition polymers made by polymerizing epoxides.... | 07/23/1996 |
| 5510510 | Inhibitors of farnesyl protein transferase Inhibition of farnesyl transferase, which is an enzyme involved in ras oncogene expression, and inhibition of cholesterol biosynthesis, are effected by compounds of the formula ##STR1## their enantiomers, diastereomers, and pharmaceutically acceptabl... | 04/23/1996 |
| 5498754 | Process for refining crude fluoroalkylsulfonic acid with the use of water A process for refining a crude fluoroalkylsulfonic acid represented by the general formula RfSO3 H wherein Rf is a fluoroalkyl group having 1 to 4 carbon atoms into a highly refined one substantially free of impurities, said process comprising ... | 03/12/1996 |
| 5488147 | Diaryliodonium fluoroalkyl sulfonate salts and a method of making The present invention provides a convenient, simple, safe and efficient one-pot method for the synthesis of a number of diarlyiodonium triflate salts which does not involve sulfuric acid and which eliminates the need for any counter-ion exchange processes... | 01/30/1996 |
| 5461117 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 10/24/1995 |
| 5380923 | Polymeric sulfonium salts and method of preparation thereof Polymeric triarylsulfonium salts are provided having a repeating structural unit with the formula: ##STR1## where R represents a substituted or unsubstituted aryl group, X- represents a non-nucleophilic anion, n represents an integer great... | 01/10/1995 |
| 5332790 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 07/26/1994 |
| 5322904 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 06/21/1994 |
| 5322903 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 06/21/1994 |
| 5302757 | Ultraviolet light sensitive onium salts A composition of matter including an onium salt and a method of forming images. The onium salt has a chromophore which absorbs ultraviolet radiation, an S, Se, As, N or P atom which is free of substituents exhibiting a higher energy occupied molecular orb... | 04/12/1994 |
| 5256815 | Bisulfite adducts of 2,4-dihalobutraldehyde The invention relates to a process for the preparation of cyclopropanecarbaldehydes of formula ##STR1## in which R1 is C1 -C4 alkyl or benzyl, which comprises a) reacting a tetrahydrofuran of formula ##STR2## ... | 10/26/1993 |
| 5243099 | Synthesis of alpha-substituted alkadienes Organic polymer additive containing polar functional groups enhances the stability of palladium-containing catalysts for the telomerization of conjugated diolefins in the presence of active hydrogen-containing telomerization agent to produce alpha-substit... | 09/07/1993 |
| 5169981 | Synthesis of alpha-substituted alkadienes Organic polymer additive containing polar functional groups enhances the stability of palladium-containing catalysts for the telomerization of conjugated diolefins in the presence of active hydrogen-containing telomerization agent to produce alpha-substit... | 12/08/1992 |
| 5105006 | Phosphonium salts The invention is a novel phosphonium salt, useful as an initiator or catalyst in the reaction of oxirane groups in an epoxy resin with aromatic carbonate and/or ester linkages in monomeric, oligomeric, or polymeric carbonates, esters, or estercarbonates.... | 04/14/1992 |
