| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 562602000 | Halogen | 16 |
| 20140121411 | PROCESS FOR SEPARATING MONOCHLOROACETIC ACID AND DICHLOROACETIC ACID VIA EXTRACTIVE DISTILLATION - The present invention pertains to a process for separating monochloroacetic acid and dichloroacetic acid from one another via extractive distillation, comprising the steps of (i) contacting a mixture comprising monochloroacetic acid and dichloroacetic acid with an extractive agent which is chemically stable and which has a BF | 05-01-2014 |
| 20150112097 | PROCESS FOR SEPARATING MONOCHLOROACETIC ACID AND DICHLOROACETIC ACID VIA EXTRACTIVE DISTILLATION USING AN ORGANIC SOLVENT - The present invention pertains to a process for separating monochloroacetic acid and dichloroacetic acid from one another via extractive distillation using (a) an extractive agent that is chemically stable and has a BF | 04-23-2015 |
| 562603000 | Preparation by halogenating acid or anhydride | 1 |
| 20120245384 | METHOD OF PREPARING HIGHLY FLUORINATED CARBOXYLIC ACIDS AND THEIR SALTS - A method for preparing highly fluorinated carboxylic acids and theirs salts and the precursors thereof. | 09-27-2012 |
| 562604000 | Preparation by dehalogenation | 3 |
| 20100029984 | MANUFACTURE OF SUBSTANTIALLY PURE MONOCHLOROACETIC ACID - A process for the manufacture of substantially pure monochloroacetic acid from a liquid chloroacetic acid mixture comprising monochloroacetic acid and dichloroacetic acid, in particular in an amount of 2 to 40 percent by weight, wherein said mixture, further mixed with a suspended hydrogenation catalyst, is mixed with hydrogen gas and the resulting mixture is brought to reaction in a reactor, which is characterized in that the reactor is a loop reactor comprising a gas and liquid recirculation system coupled via an ejector mixing nozzle, in which reactor the gas and liquid are circulated in co-current flow, and the mixing intensity introduced to the liquid phase is at least 50 W/l of liquid phase. | 02-04-2010 |
| 20140275625 | PROCESS FOR THE PURIFICATION OF A LIQUID FEED COMPRISING MCA AND DCA - The present invention pertains to a process for the purification of a substantially water-free liquid feed comprising monochloroacetic acid, dichloroacetic acid, optionally acid chlorides, optionally anhydrides, and optionally acetic acid, which comprises the steps of (a) adding water to the liquid feed so that a liquid feed is obtained comprising between 0.01 and 5% by weight of water, based on the total weight of the liquid feed, and (b) subsequently subjecting the liquid feed obtained in step (a) to a catalytic hydrodechlorination step by contacting it with a source of hydrogen to convert the dichloroacetic acid into monochloroacetic acid in the presence of a solid heterogeneous hydrogenation catalyst comprising one or more metals of Group VIII of the Periodic Table of the Elements deposited on a carrier. | 09-18-2014 |
| 20140357892 | PROCESS FOR THE HYDRODECHLORINATION OF A LIQUID FEED COMPRISING DICHLOROACETIC ACID - The process of the present invention pertains to a process wherein a liquid feed comprising monochioroacetic acid, dichloroacetic acid, and optionally acetic acid and/or trichioroacetic acid is subjected to a catalytic hydrodechlorination step by contacting it with a source of hydrogen in the presence of a solid heterogeneous hydrogenation catalyst situated in a fixed catalyst bed, wherein the liquid feed is fed to the top of avertical tubular reactor at a superficial mass velocity of between and 10 kg/s per square meter of the horizontal cross-section of the vertical tubular reactor and a rate of between 250 and 3,000 kg/hr per m of said catalyst bed, wherein the source of hydrogen is fed to the top or bottom of the vertical tubular reactor at a rate of between 0.025 to 0.25 Nm/s per square meter of the horizontal cross-section of the vertical tubular reactor, so as to obtain an average axial pressure gradient of at least 2 kPa per meter of said catalyst bed, and wherein the temperature in the top of the vertical tubular reactor is between 100 and 200° C., and wherein the pressure in the top of the vertical tubular reactor is between 0.2 and 1.0 MPa. | 12-04-2014 |
| 562605000 | Fluorine containing | 10 |
| 20090198086 | FLUOROAMINE HAVING PERFLUOROALKYL GROUP, PROCESS FOR PRODUCING THE SAME, METHOD OF FLUORINATION THEREWITH, AND METHOD OF RECOVERING AMIDE HAVING PERFLUOROALKYL GROUP - Provided are a fluorous-tag-introduced fluoroamine of a general formula (I), its production method, a method of fluorination of a substrate having functional group containing oxygen with the fluoroamine serving as a fluorinating agent, and a method of recovering a fluorous-tag-introduced amide after the fluorination. The fluoroamine and its production method, as well as the fluorination method with the fluoroamine and the method of recovery of a fluorous-tag-introduced amide are ecological and advantageous in industrial use, as the load for separating and collecting the product after the fluorination with the fluoroamine serving as a fluorinating agent is small. | 08-06-2009 |
| 20090203939 | Therapeutical agent useful for the treatment of plasma cell neoplasias - The use of calcium trifluoroacetate for the preparation of a drug for the treatment of plasma cell neoplasias, particularly multiple myeloma. | 08-13-2009 |
| 20100197964 | METHOD OF ADSORBING AND METHOD OF RECOVERING FLUORINE-CONTAINING COMPOUND - An adsorption process in which high adsorption of C | 08-05-2010 |
| 20110065955 | Method For Preparing Difluoroacetic Acid and Salts Thereof - The invention relates to a method for preparing difluoroacetic acid and the salts thereof. The invention also relates to the preparation of difluoroacetyl fluoride used as an intermediate product in the preparation of difluoroacetic acid. The method for preparing difluoroacetic acid according to the invention is characterised in that the same comprises the step of preparing difluoroacetyl fluoride by reacting dichloroacetyl chloride with hydrofluoric acid in a gaseous phase and in the presence of a chromium-based catalyst, followed by the step of hydrolysing the difluoroacetyl fluoride thus obtained. | 03-17-2011 |
| 20110166385 | METHOD FOR SEPARATING A CARBOXYLIC ACID IN SALIFIED FORM BEARING AT LEAST ONE HALOGEN ATOM - The subject of the present invention is a method for separating a carboxylic acid in salified form bearing at least one halogen atom at the α position of the carbonyl group from a medium comprising it. The method according to the invention, for separating a carboxylic acid in salified form bearing at least one halogen atom at the α position of the carbonyl group from an aqueous medium comprising it, is characterized by the fact that the latter is brought into contact with an onium salt leading to the formation of two phases: an organic phase comprising the salt resulting from the reaction of the salt of the carboxylic acid bearing at least one halogen atom at the α position of the carbonyl group and of the onium salt leading to the displacement of the cation from the carboxylic acid by the onium, an aqueous phase comprising the various salts, in particular the one resulting from the reaction of the cation of the carboxylic acid with the anion of the onium, and by the fact that the organic and aqueous phases are then separated and that the onium salt of the carboxylic acid is recovered from the organic phase. | 07-07-2011 |
| 20110251427 | Polyfluoralkane carboxylic acid (or its salt) and process for producing the same - A polyfluoroalkane carboxylic acid represented by the following general formula: | 10-13-2011 |
| 20120123159 | METHOD FOR PREPARING DIFLUOROACETIC ACID - A method for preparing difluoroacetic acid is described. The method can include: reacting a difluoroacetic acid ester with an aliphatic carboxylic acid which, after transesterification, results in the formation of difluoroacetic acid and the corresponding carboxylic acid ester, the carboxylic acid being selected such that the ester of the carboxylic acid has a lower boiling point than that of difluoroacetic acid; and removing the ester of the carboxylic acid by distillation as the ester forms, thus enabling the difluoroacetic acid to be recovered. | 05-17-2012 |
| 20120190892 | PROCESS FOR THE PREPARATION OF A HALOGENOACETYL FLUORIDE AND ITS DERIVATIVES - The present invention relates to a method for preparing a halogenoacetyl fluoride and the derivatives thereof. The inventive method for preparing a halogenoacetyl fluoride acid is characterised in that said method includes: a step of preparing a halogenoacetyl halide by photo-oxidation of a halogenoethylene compound in conditions such that the transformation rate of the halogenoethylene compound into halogenoacetyl halide is no higher than 80%, producing a reaction mixture essentially including halogenoacetyl halide and the excess halogenoethylene compound; a step of partial fluorination of the mixture obtained by reacting the latter with hydrofluoric acid suitable for obtaining a mixture of halogenoacetyl fluoride and the excess halogenoethylene compound; a step of separating the halogenoacetyl fluoride and the excess halogenoethylene compound. The invention can be used, specifically, for preparing the trichloroacetyl fluoride used as an intermediate species in the production of trifluoroacetic acid. | 07-26-2012 |
| 20150314266 | ADSORBENT FOR ORGANIC FLUORO-COMPOUND COMPRISING CYCLODEXTRIN-SUPPORTED POLYMER - The present invention is to provide a material that is capable of selectively adsorbing organic fluoro-compounds such as perfluorooctane sulfonic acid, allows the adsorbed organic fluoro-compounds to be recovered, and is reusable as an adsorbent, specifically to provide a polymer in which cyclodextrin is supported on the surface of a water-insoluble polymer, and an adsorbent containing the same, and a method of use of the same as a selective adsorbent of, in particular, an organic fluoro-compound. | 11-05-2015 |
| 20160376215 | METHOD FOR RECOVERING ANIONIC FLUORINATED EMULSIFIER - To provide a method for recovering an acid of an anionic fluorinated emulsifier with a high yield from a basic ion exchange resin having a nonionic surfactant physically adsorbed thereon and having the anionic fluorinated emulsifier adsorbed thereon. A method for eluting and recovering an acid of an anionic fluorinated emulsifier from a basic ion exchange resin having a nonionic surfactant physically adsorbed thereon and having the anionic fluorinated emulsifier adsorbed thereon, which comprises a step (1) of bringing the basic ion exchange resin into contact with a water-soluble organic solvent and a step (2) of recovering the acid of the anionic fluorinated emulsifier from the basic ion exchange resin from which the ionic surfactant is eluted in the step (1). | 12-29-2016 |
