Patents Examined by Karl Puttlitz
  • Patent number: 7271297
    Abstract: A process produces vinyl ether compounds and includes allowing a vinyl ester compound represented by following Formula (1): wherein R1, R2, R3 and R4 are the same or different and are each a hydrogen atom or an organic group, to react with a hydroxy compound represented by following Formula (2): R5OH??(2) wherein R5 is an organic group, in the presence of at least one transition element compound to thereby yield a vinyl ether compound represented by following Formula (3): wherein R2, R3, R4 and R5 have the same meanings as defined above. Such transition element compounds include iridium compounds and other compounds containing Group VIII elements.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: September 18, 2007
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Yasutaka Ishii, Tatsuya Nakano, Keizo Inoue
  • Patent number: 7268247
    Abstract: Phenylmalonic acid dinitriles are prepared by reaction of, for example, phenyl Kalides with malonic acid dinitrile in the presence of palladium catalysts and bases.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: September 11, 2007
    Assignee: Syngenta Crop Protection, Inc.
    Inventor: Martin Zeller
  • Patent number: 7265241
    Abstract: A method for purifying a crude (meth)acrylic acid obtained by a vapor phase catalytic oxidation method, characterized in that the crude (meth)acrylic acid having most parts of water and acetic acid removed therefrom, is fed to and distilled in a first distillation column of a purification system comprising first to third three distillation columns, the top fraction from the first distillation column is fed to and distilled in the second distillation column, the resulting top fraction is recovered as a high purity (meth)acrylic acid product, the bottoms from the first and second distillation columns are fed to and distilled in the third distillation column, and the resulting top fraction is fed to the first distillation column.
    Type: Grant
    Filed: April 12, 2005
    Date of Patent: September 4, 2007
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Shuhei Yada, Yasushi Ogawa, Yoshiro Suzuki, Kenji Takasaki
  • Patent number: 7256307
    Abstract: The present invention provides the S enantiomer of a compound of formula (I); wherein R1 represents 2,4-difluorophenyl or cyclohexyl as well as pharmaceutically acceptable salts, solvates, crystalline forms and prodrugs thereof, to processes for preparing such compounds, to their the utility in treating clinical conditions including lipid disorders (dyslipidemias) whether or not associated with insulin resistance, to methods for their therapeutic use and to pharmaceutical compositions containing them.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: August 14, 2007
    Assignee: AstraZeneca AB
    Inventors: Eva-lotte Alstermark Lindstedt, Anna Christina Olsson, Lanna Li
  • Patent number: 7256306
    Abstract: This invention relates new and improved processes for the preparation of arylalkylsulfonic acids derived from aromatic or substituted aromatic molecules and AOS acid (generally a mixture of alkenesulfonic acid and sultones, produced from the sulfonation of alpha olefins) and to cleaning compositions comprising said arylalkylsulfonic acids. The invention involves the use of a superacid catalyst to effectuate the conversion of AOS acid and aromatic reactants to arylalkylsulfonic acid under substantially anhydrous conditions, whereby a substantial improvement in the rate of conversion of the reactants to arylalkylsulfonic acid and/or improvement in mono-alkylation selectivity is realized, as compared to methods of preparation previously disclosed. Also useful as an alkylation promoter is the arylalkylsulfonic acid reaction product itself, produced in situ or from a previous reaction (i.e., a self-catalyst heel).
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: August 14, 2007
    Assignee: Stepan Company
    Inventors: Gregory P. Dado, Randal H. Bernhardt
  • Patent number: 7256310
    Abstract: Levalbuterol L-tartrate affords crystals possessing properties desirable for use in a metered dose inhaler.
    Type: Grant
    Filed: December 8, 2003
    Date of Patent: August 14, 2007
    Assignee: Sepracor Inc.
    Inventors: Paul McGlynn, Roger Bakale, Craig Sturge
  • Patent number: 7253303
    Abstract: The invention provides a method for the preparation of a dicarbonyl compound of formula (I) R1COCFR2COR3 wherein R1 is selected from alkyl, substituted alkyl, cycloalkyl, aryl, substituted aryl and acetoxy, R2 is selected from hydrogen, halogen, nitro, cyano, alkyl, substituted alkyl, cycloalkyl, acetoxy, aryl and substituted aryl, and R3 is selected from alkyl, substitued alkyl, oxyalkyl and substituted oxyalkyl, the method comprising treating a dicarbonyl compound of formula (II) R1COCHR2COR3 with elemental fluorine in a solvent which consists of methanol or aqueous methanol. The method provides an inexpensive and convenient synthetic route to 2-fluoro- and 2,2-difluoro-1,3-diketones and -1,3-ketoesters.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: August 7, 2007
    Assignee: F2 Chemicals Limited
    Inventor: John Stewart Moilliet
  • Patent number: 7253302
    Abstract: Novel mixed esters of dicarboxylic acids with monohydric fatty alcohols and propoxylated fatty alcohols show unexpected superior properties as pigment dispersants, especially for inorganic pigments used in foundations, make-ups, lipsticks and physical sunscreens. The compounds of the present invention show superior pigment wetting and dispersing properties, as demonstrated by their ability to form fluid, very high-solids dispersions, while exhibiting unusual emolliency and gloss formation.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: August 7, 2007
    Inventors: Ronald J. Smith, Maria K. Smith
  • Patent number: 7253315
    Abstract: 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 acid); and removing at least some of the hydrogen fluoride from the reaction product by washing the reaction production with aqueous sulfuric acid solution. The hydrolyzing and washing are carried out at a temperature at which the fluorocarboxylic acid is a liquid.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: August 7, 2007
    Assignees: Daikin Industries, Ltd., E. I. du Pont de Nemours and Company
    Inventors: Ta-Wei Fu, Steven H. Swearingen, Takuya Ichida, Shigeyuki Yoshii
  • Patent number: 7253328
    Abstract: A method is provided for producing vinyl chloride monomer from methyl chloride and methylene chloride. In the method, methyl chloride is reacted with methylene chloride in the vapor phase in the presence of a catalyst to produce vinyl chloride and hydrogen chloride. The reaction temperature is in the range of from about 300° C. to 500° C. The catalyst is selected from the group alumina gel, gamma-alumina, zinc chloride on active alumina, silica-alumina, zeolite, and silicon-aluminum-phosphorus oxide.
    Type: Grant
    Filed: January 24, 2005
    Date of Patent: August 7, 2007
    Inventor: John Stauffer
  • Patent number: 7253319
    Abstract: Compounds of the formula where the variables have the values described in the specification are antagonists of RAR? retinoid receptors.
    Type: Grant
    Filed: December 23, 2004
    Date of Patent: August 7, 2007
    Assignee: Allergan, Inc.
    Inventors: Kwok Yin Tsang, Santosh Sinha, Xiaoxia Liu, Smita Bhat, Roshantha A. Chandraratna
  • Patent number: 7253301
    Abstract: There is provided an optically active copper catalyst composition comprising (a) an optically active salicylideneaminoalcohol represented by the formula (1): wherein R1 and R2 are the same or different, and independently represent a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted aralkyl group, or a substituted or unsubstituted aryl group; X1 and X2 are the same or different, and independently represent a hydrogen atom, a lower alkoxy group, a nitro group, a lower alkoxycarbonyl group, a cyano group or a halogen atom; and * represents an asymmetric center, provided that both of X1 and X2 don't represent hydrogen atoms, (b) a monovalent or divalent copper compound, and (c-1) a lithium compound or (c-2) a compound selected from aluminum compounds having Lewis acidity, titanium compounds having Lewis acidity, boron compounds having Lewis acidity, zirconium compounds having Lewis acidity and hafnium compounds having Lewis acidity; and a process for producing an optically act
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: August 7, 2007
    Assignee: Sumitomo Chemical Company, Limited
    Inventor: Makoto Itagaki
  • Patent number: 7253311
    Abstract: Acrylic acid is prepared from propene by means of gas-phase oxidation by a process in which a starting gas mixture which contains propene and steam and whose molar propene/steam ratio is ?1 and whose propane content is ?5% is passed at elevated temperatures through a fixed catalyst bed comprising successive catalyst part-beds A and B, the part-bed A passed through first containing, as active material, a mixed oxide containing the elements Mo, Bi and Fe and the part-bed B containing, as active material, a mixed oxide containing the elements Mo and V, in a manner such that at least 96.5 mol % of propene are converted in a single pass through part-bed A.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: August 7, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Gerhard Nestler, Juergen Schroeder
  • Patent number: 7253297
    Abstract: Astaxanthin derivatives of the general formula (I) wherein R is in each case group —NH—CH(R1)—COOR2, —OR3 or —(Y)n-Z and R1, R2, R3, Y, Z and n are significances given in detail in the description, are novel compounds with improved stability during extrusion at the elevated temperatures as required in feed manufacture and during the storage of the manufactured feed and which accordingly are useful as pigmenting carotinoids for feed for aquatic animals. The derivatives are produced by reacting astaxanthin with the pertinent acid RCOOH as such or as its acid chloride RCOC1 or acid anhydride (RCO)2O, or, in the cases where R signifies a group —NH—CH(R1)—COOR2, with the appropriate N-carbonyl-amino acid ester of the formula OCNCH(R1)COOR2.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: August 7, 2007
    Assignee: DSM IP Assetts B.V.
    Inventors: Arnold Gloor, Werner Simon
  • Patent number: 7253308
    Abstract: A process for the continuous gas-phase oxidation of C3- and C4-precursors to (meth)acrolein and/or (meth)acrylic acid in the presence of a catalyst in a reactor which has a feed for the reaction mixture at one reactor end and removal of the reaction mixture at the opposite reactor end and which is equipped with means, arranged in the interior of the reactor, for removing the heat of reaction, through which means a heat exchange composition flows and which means are in the form of heat exchanger plates, is proposed.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: August 7, 2007
    Assignee: BASF Actiengesellschaft
    Inventors: Claus Hechler, Otto Machhammer, Gerhard Olbert, Uwe Stabel, Peter Zehner
  • Patent number: 7253310
    Abstract: A process for preparing (meth)acrylic acid by heterogeneously catalyzed gas phase partial oxidation of a saturated hydrocarbon precursor compound, in which the charging gas mixture contains from 5 to 25% by volume of steam and the molar ratio of molecular oxygen present in the charging gas mixture to saturated hydrocarbon precursor compound present in the charging gas mixture is from 1.5:1 to 2.5:1.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: August 7, 2007
    Assignee: BASF Aktiengesellschaft
    Inventors: Frieder Borgmeier, Frank Rosowski, Hans-Guenther Lintz, Ina Grisstede, Elisabet Bacells Cabre
  • Patent number: 7252740
    Abstract: Carboxylic acids comprising perfluoropolyether chains, of formula: T1—CFW1—O—Rf—CFW2—T2??(I) wherein T1, T2, equal to or different from each other, are selected from the group formed of —CH2—B—Y—(COOH)n, —CH(CF3) O—Y(COOH)n, —F, —CF3, —C2F5, —(C2F4)Cl, wherein B=—O— or —S—; Y=C1—C20 alkylene chain, n=1-4; with the proviso that at least one of the two end groups T1, T2 be —CH2—B—Y—(COOH)n, —CH(CF3)O—Y(COOH)n; W1, W2, equal to or different from each other, are —F or —CF3; Rf is a (per)fluoropolyoxyalkylene chain formed of one or more repeating units, statistically distributed along the chain, having a number average molecular weight in the range 500-10,000.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: August 7, 2007
    Assignee: Solvay Solexis, S.p.A.
    Inventors: Antonio Russo, Claudio Tonelli, Mario Visca
  • Patent number: 7253305
    Abstract: Esters are formed by reaction of acetic anhydride with tertiary butyl or tertiary anyl alcohol in the presence of tertiary amine catalyst such as DMAP or NMI catalyst and acetic acid in amount sufficient to present catalyst degradation; in preferred practice a mixed acetic anhydride and acetic acid stream is recycled to the esterfication.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: August 7, 2007
    Inventor: Stephen H. Harris
  • Patent number: 7253304
    Abstract: Disclosed is a carbonylation process wherein a mixture of a dialkyl carbonate and halide compound is contacted with carbon monoxide in the presence of a metal selected from Group VIII of the Periodic Table to co-produce carbon dioxide and a carbonyl compound selected from a carboxylic acid, an alkyl carboxylate ester, a carboxylic acid anhydride or a mixture of any two or more thereof. The carbon dioxide co-product of the process may be recovered, and sold or further reacted with a suitable substrate to produce useful chemicals such as urea or cyclic carbonates.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: August 7, 2007
    Assignee: Eastman Chemical Company
    Inventor: Gerald Charles Tustin
  • Patent number: 7253309
    Abstract: This invention is related to a shell-and-tube type reactor provided with reaction tubes packed with a catalyst and adapted to circulate a heat medium to the fluid outside the tubes and is characterized by a method introducing a gas into the catalyst beds so as to retain the relative humidity of the catalyst in the range of more than 40% while elevating the temperature of the reactor thereby starting up the reactor. This method prevents the catalyst from degradation of activity due to absorption of moisture, exalts the service life of the catalyst, and permits stable production of methacrylic acid.
    Type: Grant
    Filed: January 29, 2003
    Date of Patent: August 7, 2007
    Assignee: Nippon Shokubai Co., Ltd
    Inventors: Hiroyuki Uhara, Kazuo Anyouji, Hideyuki Hironaka, Hideo Onodera