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| Number | Title | Issue Date |
| 7288201 | Methods for removing moisture from hydrogen halides A composition comprising a magnesium halide coated macroporous carbonaceous substrate is provided for effecting moisture removal from a hydrogen halide fluid. Moisture removal is effected by intimately contacting the hydrogen halide fluid with the magnesium halide c... | 10/30/2007 |
| 7247736 | Method of identifying inhibitors of DHODH The present invention provides a compound capable of binding to the ubiquinone binding site of DHODH which contains a non-aromatic ring system as a core structure, a group capable of interacting with structural elements of subsite 2 or 3 of the ubiquinone binding si... | 07/24/2007 |
| 7135597 | Process for the preparation of monochloroacetic acid The invention pertains to a process for the production of monochloroacetic acid from chlorine and acetic acid in the presence of a catalyst by reactive distillation. The process and the required reactive distillation apparatus is much less complex than conventional ... | 11/14/2006 |
| 7030270 | Process for preparing monochloroacetic acid The invention relates to a process for preparing monochloroacetic acid (MCA) comprising a chlorination step and a hydrogenation step and is characterized in that said process comprises the removal of aldehydes from a process stream by oxidation using a peroxycarboxy... | 04/18/2006 |
| 6846952 | Process for manufacture of a 4-bromo-2-oxyimino butyric acid and its derivatives A process for producing 4-bromo-2-oxyimino butyric acid, predominantly as the (Z)-isomer of formula (I), wherein R is hydrogen; a linear or branched C1-4 alkyl group; a linear or branched C1-4 alk... | 01/25/2005 |
| 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 |
| 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 |
| 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 |
| 5750769 | Halogenated esters useful as intermediates for insecticides The invention provides novel compounds of formula: CF3 --CXCl--CH(OH)CH2 --C(CH3)2 --CH2 --CO2 R(I) where X represents chloro or bromo and R represents hydrogen or alkyl of up to 4 carbon atoms,... | 05/12/1998 |
| 5731469 | Process for the preparation of 3-chloropropionic acid A process for the preparation of 3-chloropropionic acid consists especially in simultaneously introducing hydrochloric acid gas and acrylic acid at a molar ratio of 0.7:1 to 1.3:1 into a sediment consisting of 3-chloropropionic acid optionally diluted wit... | 03/24/1998 |
| 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 |
| 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 |
| 5527954 | Process for the production of 2-fluoroisobutyric acid or its ester Provided is a process for the production of 2-fluoroisobutyric acid or its ester, which comprises reacting 2-hydroxyisobutyric acid or its ester with thionyl chloride and a hydrogen fluoride source.... | 06/18/1996 |
| 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 |
| 5442084 | Method of selective fluorination The present invention is a method for selectively fluorinating various methylenephosphonate and methylenephosphorane derivatives using an electrophilic fluorinating agent, such as N-fluoro 1,4-diazabicyclo[ 2.2.2]octane by fluorinating the monohalogenated... | 08/15/1995 |
| 5401876 | Synthesis of chloroacetic acids Chloroacetic acids and essentially pure hydrochloric acid are prepared by chlorinating acetic acid in the presence of a catalytically effective amount of acetic anhydride, acetyl chloride, or admixture thereof, whereby byproducing a gaseous stream of crud... | 03/28/1995 |
| 5384415 | Process for the preparation of brominated compounds, especially from alcohols A process for the preparation of a brominated compound which comprises the step of reacting at least one compound selected from the group consisting of a chloroformate, a chlorosulfite and a chlorophosphite with a brominating agent for a time sufficient t... | 01/24/1995 |
| 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 |
| 5241086 | Process for the preparation of brominated compounds, especially from alcohols A process for the preparation of a brominated compound which comprises the step of reacting at least one compound selected from the group consisting of a chloroformate, a chlorosulfite and a chlorophosphite with a brominating agent for a time sufficient t... | 08/31/1993 |
| 5215671 | Purification method of 2-chloropropionic acid The present invention is directed to a method for recovering 2-chloropropionic acid so that this compound can be separated in a high-purity form. According to the method, crude 2-chloropropionic acid is heat-treated in the presence of a metal compound at ... | 06/01/1993 |
| 5175345 | Process for producing 2-fluoroisobutyric acid ester A 2-fluoroisobutyric acid ester can be obtained at a high yield in one pot by reacting a 2-hydroxyisobutyric acid ester with fluorosulfuric acid in the absence or presence of a hydrogen fluoride source, or by reacting a 2-hydroxyisobutyric acid ester with... | 12/29/1992 |
| 5144067 | Process for the coproduction of alkyl iodides and alpha-iodocarboxylic acids and/or anhydrides thereof Disclosed is a process for the coproduction of (1) an alkyl iodide and (2) an -iodocarboxylic acid, a mono--iodocarboxylic anhydride or a mixture thereof which comprises contacting a mixture of an iodine compound and a carboxylic anhydride w... | 09/01/1992 |
| 5093432 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 03/03/1992 |
| 4983747 | Process for preparation of perfluoro organic compounds Disclosed is a process for the preparation of a perfluoroorganic compound, which comprises fluorinating a partially fluorinated or unfluorinated organic compound having carbon-to-fluorine bonds under mild conditions and then, contacting the resulting reac... | 01/08/1991 |
| 4806684 | Process for the preparation of bromofluoroacetic acids The invention relates to the synthesis of bromofluoroacetic acids of formula: ##STR1## in which X is a hydrogen, fluorine, chlorine or bromine atom. These acids are prepared by reacting a compound of formula: ##STR2## dissolved in concentra... | 02/21/1989 |
| 4383121 | Process for purifying monochloroacetic acid A mixture containing monochloroacetic acid and dichloroacetic acid as the main components are admixed with 5-25% by weight of water on the basis of sum total of monochloroacetic acid, dichloroacetic acid and water, and subjected to adiabatic cooling under... | 05/10/1983 |
| 4281184 | Monochloroacetic acid process Production of monochloroacetic acid with a minimum of polychlorinated derivatives in a two stage process by reaction of acetic anhydride and hydrogen chloride at a low temperature to produce a solution of acetyl chloride in acetic acid and chlorinating th... | 07/28/1981 |
| 4221921 | Monochloroacetic acid from hydroxyacetic acid A process for producing monochloroacetic acid from hydroxyacetic acid which comprises feeding hydroxyacetic acid and aqueous hydrogen chloride to a reaction zone and contacting the hydroxyacetic acid with the aqueous hydrogen chloride in the presence of h... | 09/09/1980 |
| 4213919 | Manufacture of ଲ-chlorocarboxylic acid chlorides The manufacture of ଲ-chlorocarboxylic acid chlorides by reacting ଲ-olefinically unsaturated carboxylic acids with phosgene is advantageously carried out by first at least partially reacting the unsaturated carboxylic acid with hydrogen ... | 07/22/1980 |
| 4161612 | Process for preparing thiodiglycolic acid A process for preparing thiodiglycolic acid comprises contacting bromoacetic acid, diglycolic acid or glycolic acid and hydrogen sulfide in the presence of aqueous hydrogen bromide.... | 07/17/1979 |
| 4148811 | Halogenation process Halogenation is carried out regiospecifically in the presence of a cyanoquinone.... | 04/10/1979 |
| 4105691 | Process for the production of chlorofluorinated carboxylic acids Chlorofluorinated carboxylic acids may be effectively produced by an oxychlorofluorination process by reacting a gaseous mixture of a starting material selected from a saturated aliphatic carboxy containing compound, a saturated aliphatic carboxylic acid ... | 08/08/1978 |
| 4044147 | N-(acyl)-p-amino-N'-(monosubstituted)-benzamide anti-ulcer agents The preparation of novel N-(acyl)-p-amino-N'-(monosubstituted) benzamides by modified Schotten-Baumann reaction of the corresponding p-aminobenzamides is described. These compounds are effective anti-ulcer agents.... | 08/23/1977 |
| 4038310 | Acid anhydride to react with impurities in the production of perfluorocarboxylic acids Perfluorocarboxylic acids are produced by a metathesis reaction between an acid and a perfluoro acid fluoride in the presence of an acid anhydride. The perfluoroacid fluoride can conveniently be produced by electrochemical fluorination of the acyl fluorid... | 07/26/1977 |
| 4026953 | Solvents for NMR spectroscopy Organic solvents containing less than 0.2 atom percent of 13 C and which preferably are at least partially deuterated are produced from 13 C-depleted gaseous carbon compounds and are advantageously employed as solvents for 13 | 05/31/1977 |
| 4022824 | Perfluorocarboxylic acids from carboxylic acids and perfluorocarboxylic acid fluorides Perfluorocarboxylic acids are produced by a metathesis reaction between an acid and a perfluoro acid fluoride (acyl fluoride). The perfluoroacyl fluoride can conveniently be produced by electrochemical fluorination of the acyl fluoride co-product of the m... | 05/10/1977 |
| 4013649 | Method of making 4-amino-6-t-butyl-3-mercapto-1,2,4-triazin-5-one Method of making 4-amino-6-t-butyl-3-mercapto-1,2,4-triazin-5-one comprising halogenating a 3,3-dimethylbutyric acid with Br2 or Cl2 to produce a 2,2-dihalo-3,3-dimethylbutyric acid then reacting the latter with thiocarbohydrazide. A... | 03/22/1977 |
