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| Number | Title | Issue Date |
| 7985877 | Carboxylic acid compound, use thereof, and process for producing the same The present invention provides a process for producing 1,1,1,3,3,3-hexafluoro-2-methoxypropane, wherein a novel compound, 2-methoxy-2-trifluoromethyl-3,3,3-trifluoropropionic acid or a salt thereof is decarboxylated, or wherein an olefin compound represented by chem... | 07/26/2011 |
| 7622608 | Method for regenerating basic anion-exchange resin A simple and efficient method for regenerating a basic anion-exchange resin, whereby at the time of removing a fluorinated emulsifier from a basic anion-exchange resin having the fluorinated emulsifier adsorbed thereon, it is unnecessary to provide a safety device/r... | 11/24/2009 |
| 7404907 | Removal and recovery of ammonium perfluorooctanoate (APFO) from contaminated water Ammonium perfluorooctanoate—also called APFO, PFOA or C8—is a surfactant associated with the production of Teflon®, and is also present in products such as fire-fighting foams and may be formed from the microbial degradation of grease-resistant coatings applied... | 07/29/2008 |
| 7304191 | Process for the synthesis of fluoroorganic compounds The present invention relates to a fluorination method for the synthesis of halofluoroorganic compounds which can be used, inter alia, as precursors in the synthesis of 2,3-unsaturated fluoroorganic carbonyl compounds comprising a fluorine substituent in the 2 posit... | 12/04/2007 |
| 7301052 | Process for producing perfluorodiacyl fluorinated compounds The present invention provides a process for producing compounds useful as raw materials for various fluororesins in high yields in few steps from inexpensive and readily available starting materials. The following compound (1) and the following compound (2) ... | 11/27/2007 |
| 7297744 | Process for preparing fluoropolymer dispersions A process for preparing fluoropolymer dispersions, substantially free from anionic fluorinated surfactants, and with a coagulum amount | 11/20/2007 |
| 7241920 | Filterable surfactant composition An improved aqueous soluble surfactant which has particular utility for incorporating in etchants for semiconductor devices is provided. The surfactant comprises a combination of a linear perfluorocarboxylic acid, a cyclic amine and an aliphatic alcohol. ... | 07/10/2007 |
| 7196235 | Process for producing fluorinated vinyl ether There is provided a process for producing a fluorinated vinyl ether from a fluorinated acid fluoride compound having an ester group as a precursor of a carboxylic acid group, or a SO2F group as a precursor of a sulfonic acid group, in high yield by simple... | 03/27/2007 |
| 7015349 | Reduction of hair growth Compositions including a conjugate of α-difluoromethylornithine can be applied topically to reduce hair growth. ... | 03/21/2006 |
| 7011696 | Elimination process of fluorinated anionic surfactants An elimination process of fluorinated anionic sufactants from exhausted gaseous streams, wherein the gaseous stream is put into contact with aqueous solutions having in the range from 3.5 to 13.8, the aqueous solution density being lower than 1.05 g/cm3, ... | 03/14/2006 |
| 6972094 | Method of recovering fluorochemical surfactant Upon recovering a fluorochemical surfactant from a fluorochemical-containing aqueous solution, there is provided a method for recovering the fluorochemical surfactant from the aqueous solution containing the surfactant. In the method, the fluorochemical surfactant i... | 12/06/2005 |
| 6891064 | Process for producing fluoroalkylcarboxylic acid The present invention provides a process for producing a fluoroalkylcarboxylic acid of the formula RfCOOH wherein Rf is a C1-16 fluoroalkyl group, which comprises oxidizing a fluoroalkyl alcohol of the formula RfCH2OH wherein Rf is as defined a... | 05/10/2005 |
| 6743929 | Sulfonylalkanoylamino hydroxyethylamino sulfonamides useful as retroviral protease inhibitors Sulfonamide-containing hydroxyethylamine compounds are effecive as retroviral protease inhibitors, and in particular as inhibitors of HIV protease. ... | 06/01/2004 |
| 6706193 | Method for recovering fluorinated emulsifiers from aqueous phases Fluorinated emulsifiers can be recovered from an aqueous phase containing small amounts of fluoropolymer particles by treating the aqueous phase with a small amount of a nonionic surface-active agent, bringing the aqueous phase adjusted in this way into contact with... | 03/16/2004 |
| 6613941 | Method for recovering fluorinated alkanoic acids from waste waters Fluorinated emulsifier acids can be isolated from wastewater by firstly removing fine solids and/or material which can be converted into fine solids from the wastewater, preferably by precipitation, subsequently bringing the wastewater into contact with a... | 09/02/2003 |
| 6518442 | Process for the recovery of fluorinated alkandic acids from wastewater The invention relates to a method for removing fluorinated emulsifying agent acids from waste waters, characterized in that the finely dispersed solids in the waste water are stabilized with a nonionic or cationic surfactant or an analogous acting surface... | 02/11/2003 |
| 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 |
| 6464895 | Reagent and process which are useful for grafting a substituted difluoromethyl group onto a compound containing at least one electrophilic function The invention relates to a nucleophilic reagent which is useful for grafting a substituted difluoromethyl group onto a compound containing at least one electrophilic function, or for the synthesis of oxysulphide-containing and fluorine-containing organic ... | 10/15/2002 |
| 6437177 | -hydroxy, -amino, and halo derivatives of ଲ-sulfonyl hydroxamic acids as matrix metallopropteinases inhibitors The present invention provides a compound of formula I ##STR1## or pharmaceutical acceptable salts thereof wherein R1 is C4-12 alkyl, C4-12 alkenyl, C4-12 alkynyl, --(CH2)h --C3-8 | 08/20/2002 |
| 6437159 | Fluorinated alkanoic acid purification process A process that can be used for isolating a fluorinated alkanoic acid from an aqueous solution also containing inorganic fluorides is provided. This process comprises (A) acidifying an aqueous solution comprising an ammonium or metal salt of a fluorinated ... | 08/20/2002 |
| 6403832 | Process for producing optically active 3,3,3-Trifluoro-2-Hydroxy-2-Methylpropionic acid, and salt thereof There are disclosed are a diastereomer salt of formula (1): ##STR1## a process for producing the same, a process for producing optically active 3,3,3-trifluoro-2-hydroxy-2-methylpropionic acid of formula (2'): ##STR2## a novel optically active amine compo... | 06/11/2002 |
| 6376705 | Manufacture of 3,3,4,4-tetrahydroperfluoroalkanoates Esters and other carboxylic acid derivatives of 3,3,4,4-tetrahydroperfluoroalkylcarboxylic acids are made by the iron promoted reaction of an ester of bromodifluoroacetic acid or other carboxylic acid derivatives and a (perfluoroalkyl)ethylene. The result... | 04/23/2002 |
| 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 |
| 6281374 | Fluorinated alkanoic acid purification process A process that can be used for isolating a fluorinated alkanoic acid from an aqueous solution also containing inorganic fluorides is provided. This process comprises (A) acidifying an aqueous solution comprising an ammonium salt of a fluorinated alkanoic ... | 08/28/2001 |
| 6245923 | Recovery of highly fluorinated carboxylic acids from the gaseous phase The process for the recovery of highly fluorinated carboxylic acids from off-gas streams, in which the off-gas is brought into contact with an alkaline washing solution of density >1.15 g/cm3 so that the salt of the highly fluorinated carboxyli... | 06/12/2001 |
| 6222046 | Tetraalkylfluoroformamidinium trifluoroacetate and preparation process of same The invention has disclosed a trifluoroacetoxylation agent and a preparation process of the agent, which is safe and ease to handle, very useful in industry, and represented by the formula (1); ##STR1## wherein R1 to R4 are a substit... | 04/24/2001 |
| 6184415 | Production of chiral non-racemic 2-halopropionic acid or salt thereof It has been discovered that it is possible to produce enantioselectively, a chiral 2-haloalkanoic acid or salt thereof, by subjecting a 2-halo-,ଲ-alkenoic acid or salt, e.g., a 2-haloacrylic acid or salt, to asymmetric hydrogenation in the pr... | 02/06/2001 |
| 6166252 | Process for preparing dichlorofluoroacetyl halides Process for preparing dichlorofluoroacetylfluoride (CFCl2 COF) comprising the following steps: a) fluorination with hydrofluoric acid (HF) of the trichloroacetyl halide in a fixed or fluidized tubular bed reactor, filled with fluorination catal... | 12/26/2000 |
| 6049001 | Fluorine-containing carboxylic acid compounds, methods for their production, and chemical processes utilizing the same Novel fluorine-containing carboxylic acid compounds of formula (II) are provided that can be reacted together with a base to produce industrially useful 3-(2-chloro-2-fluorovinyl)-2,2-dimethyl cyclopropanecarboxylic acid compounds of formula (I). The fluo... | 04/11/2000 |
| 6046292 | Polymerizable mesophases based on substituted unsaturated carboxylic acids Mesogens are provided based on substituted unsaturated carboxylic acids such as acrylic and methacrylic acid. Substitution of a variety of hydrophobic tails onto the carboxylic acid or acid derivative via the vinyl carbon proximal to the carbonyl of the c... | 04/04/2000 |
| 5905127 | Polymerizable mesophases based on substituted unsaturated carboxylic acids Mesogens are provided based on substituted unsaturated carboxylic acids such as acrylic and methacrylic acid. Substitution of a variety of hydrophobic tails onto the carboxylic acid or acid derivative via the vinyl carbon proximal to the carbonyl of the c... | 05/18/1999 |
| 5763552 | Hydrogen-containing flourosurfacant and its use in polymerization A partially-fluorinated surfactant having internal methylene groups and having the formula Rf --(CH2)m --R'f --COOM wherein m is 1-3, Rf is perfluoroalkyl or perfluoroalkoxy, containing 3-8 carbon ato... | 06/09/1998 |
| 5756849 | Process for grafting a substituted difluoromethyl group onto a compound containing an electrophilic functional group The invention relates to a process and a nucleophilic reagent which is useful for grafting a substituted difluoromethyl group onto a compound containing at least one electrophilic function, characterized in that it comprises: a) a fluorocarboxylic acid of... | 05/26/1998 |
| 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 |
| 5750778 | Fungicide intermediates Certain fluoroalkanoic acids and derivatives, including 2-fluoroisobutyric acid and 2-fluoroisobutyryl chloride, useful as intermediates for fungicides, and methods of preparing them.... | 05/12/1998 |
| 5710317 | Preparation of difluoroacetic acid fluoride and difluoroacetic acid esters A method for preparing difluoroacetic acid fluoride, which comprises reacting a 1-alkoxy-1,1,2,2-tetrafluoroethane of the formula HCF2 CF2 OR1 wherein R1 is a C1-4 alkyl group in a gas phase in the pr... | 01/20/1998 |
| 5700840 | Fluoroalkenyl compounds and their use as pest control agents Fluorinated alkene compounds useful for controlling nematodes, insects, and acarids that prey on agricultural crops, these compounds having the formula BrCF2 CFClCH2 CO--R where R is R1 or R2. R1 is -... | 12/23/1997 |
| 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 |
| 5672298 | Electro-sensitive composition An electro-sensitive composition comprising a fluorine compound having a predetermined structure, and an electrically insulating medium capable of dissolving this fluorine compound when a voltage is applied thereto, is disclosed. This electro-sensitive co... | 09/30/1997 |
| 5669964 | Fluoralkycarboxylic acid and derivative thereof An object of the present invention is to provide a compound which imparts a sufficient water repellency and a suitable oil repellency to substrates such as a fiber, a paper, a wood material, a hide, a leather, a resin, a glass, a metal, etc. The compound ... | 09/23/1997 |
