Carboxylic Acid Esters Patents (Class 560/1)
  • Patent number: 6921746
    Abstract: Multifunctional polymers containing polymerized units of (a) ?-Acyloxyacrylonitrile, ?-haloacrylic acid, ?-acyloxyacrylic ester and/or ?-hydroxyacrylic acid, (b) monoethylenically unsaturated carboxylic acids, (c) vinyl esters of saturated aliphatic monocarboxylic acids and/or vinyl alcohol and optionally (d) other monoethylenically unsaturated monomers copolymerizable with said monomers (a) to (c) and optionally (e) crosslinkers containing at least two ethylenically unsaturated double bonds and having a K value of at least 7 (determined after H. Fikentscher in acetone at 25° C.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: July 26, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Iris Rau, Johannes Perner, Christian Ott, Richard Baur
  • Patent number: 6894186
    Abstract: Methyl (R)-2-(R1OSO2)-2-(2-chlorophenyl)acetates useful as intermediates in the preparation of methyl (S)-2(2-chlorophenyl)-2-(4,5,6,7-tetrahydrothieno[3,2-c]-5-pyridyl)acetate.
    Type: Grant
    Filed: April 29, 2003
    Date of Patent: May 17, 2005
    Assignee: Sanofi-Synthelabo
    Inventors: André Bousquet, Andrée Musolino
  • Patent number: 6867268
    Abstract: The present invention provides novel thermoprecipitating polymers of formula 1 containing novel enzyme sensitive ligands of the formula 4, processes for the preparation thereof respectively, and to the use thereof for the separation of enzymes.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: March 15, 2005
    Assignee: Council of Scientific and Industrial Research
    Inventors: Alankar Arun Vaidya, Bhalchandra Shripad Lele, Mohan Gopalkrishna Kulkarni, Raghunath Anant Mashelkar
  • Patent number: 6828451
    Abstract: The invention concerns a method for preparing a fatty substance ester, characterised in that it consists in subjecting to an esterification reaction at least a fatty substance with at least an alcohol compound selected from the group consisting of sterols, stanols, 4-methylsterols and their hydrogenated homologous, triterpene alcohols and their hydrogenated homologues, and mixtures thereof, in the presence of at least a solid catalyst selected in the group consisting of lanthanide oxides and the mixtures of said oxides.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: December 7, 2004
    Assignee: Laboratoires Expanscience
    Inventors: Joë Barrault, Mickaël Boisseau, Yannick Pouilloux, Antoine Piccirilli
  • Patent number: 6815212
    Abstract: Methods are provided for detecting the binding of a first member to a second member of a ligand pair, comprising the steps of (a) combining a set of first tagged members with a biological sample which may contain one or more second members, under conditions, and for a time sufficient to permit binding of a first member to a second member, wherein said tag is correlative with a particular first member and detectable by non-fluorescent spectrometry, or potentiometry, (b) separating bound first and second members from unbound members, (c) cleaving the tag from the tagged first member, and (d) detecting the tag by non-fluorescent spectrometry, or potentiometry, and therefrom detecting the binding of the first member to the second member.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: November 9, 2004
    Assignee: Qiagen Genomics, Inc.
    Inventors: Jeffrey Van Ness, John C. Tabone, J. Jeffry Howbert, John T. Mulligan
  • Publication number: 20040215027
    Abstract: P-chiral bisphospholane ligands and methods for their preparation are described. Use of metal/P-chiral bisphospholane complexes to catalyze asymmetric transformation reactions to provide high enantiomeric excesses of formed compounds is also described.
    Type: Application
    Filed: May 10, 2004
    Publication date: October 28, 2004
    Inventors: Garrett Stewart Hoge, Om Prakash Goel
  • Publication number: 20040214934
    Abstract: Novel ultraviolet absorbing compounds that are liquid in nature, are low in color (and thus permit use without the concomitant necessity of adding large amounts of other coloring agents to combat such discoloring), and are highly effective in providing protection in wavelength ranges for which previous attempts at low-color ultraviolet absorbers have failed are provided herein. Such compounds provide such excellent, inexpensive, and beneficial protection from ultraviolet exposure within various media, including, but not limited to, clear thermoplastics. The particular compounds are generally polymeric in nature including various chain lengths of polyoxyalkylenes thereon and are liquid in nature to facilitate handling and introduction within the target media. In addition, such ultraviolet absorbers also exhibit extremely low migratory properties thereby providing long-term protective benefits to the target media as well.
    Type: Application
    Filed: April 28, 2003
    Publication date: October 28, 2004
    Inventors: Jusong Xia, Mary E. Mason, Eric B. Stephens
  • Publication number: 20040176632
    Abstract: The present invention relates to a process for the preparation of a peroxyester which can be used in particular in polymerizations, such as the polymerization of vinyl chloride, or in the thermosetting of polyester resins.
    Type: Application
    Filed: April 16, 2004
    Publication date: September 9, 2004
    Inventors: Sandra Grimaldi, Gurusamy Jeyaraj
  • Patent number: 6740678
    Abstract: The present invention provides a method for treating cardiovascular ailments. The method involves first screening an individual to determine their risk of having the potential for unstable plaques. Such individuals can be selected by looking at one of the following criteria: (i) increased plaque neovascularization, (ii) area ratio of intima to wall area of a plaque, (iii) evidence of plaque hemorrhage, or (iv) inflammatory cells associated with plaque vessels. Looking at these criteria permits one to select individuals having the potential for unstable plaques. The method then involves treating the selected individual with an effective amount of an angiogenesis inhibitor.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: May 25, 2004
    Assignee: Children's Medical Center Corporation
    Inventors: Karen S. Moulton, Judah Folkman
  • Publication number: 20040082804
    Abstract: Multiphasic reactions, especially those reactions using a phase transfer catalyst, are conducted in microchannel apparatus. Advantageously, these reactions can be conducted with two, planar microlayers of reactants in adjacent laminar flow streams. Microchannel apparatus and methods for conducting unit operations such as reactions and separations in microchannel apparatus is also described. Microchannel apparatus can provide advantages for controlling reactions and separating products, solvents or reactants in multiphase reactions.
    Type: Application
    Filed: October 22, 2002
    Publication date: April 29, 2004
    Inventors: John H. Brophy, Bruce F. Monzyk
  • Patent number: 6720445
    Abstract: Novel acetyloxymethyl esters are disclosed. Methods of treating an illness, including cancer, hemological disorders and inherited metabolic disorders, and treating or ameliorating other conditions using these compounds are also disclosed. The compounds are effective in the inhibition of histone deacetylase.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: April 13, 2004
    Assignee: Beacon Laboratories, Inc.
    Inventors: Hsuan-Yin Lan-Hargest, Norbert L. Wiech
  • Patent number: 6716788
    Abstract: The present invention relates to a process for the preparation of a double metal cyanide (DMC) catalyst, which process involves: (a) combining an aqueous solution of a metal salt with an aqueous solution of a metal cyanide salt and reacting these solutions; and (b) recovering the DMC catalyst from the reaction mixture, in which process the DMC catalyst is prepared in the presence of from 0.03 to 0.4 mole of alkaline metal compound, based on amount of metal salt. Further, the present invention relates to DMC catalyst obtainable by such process, to DMC catalyst prepared from a metal salt and a metal cyanide salt in which the molar ratio of metal derived from the metal salt to metal derived from the metal cyanide salt is at least 2.25 and to a process for polymerization of alkylene oxides which process involves reacting initiator with alkylene oxide in the presence of at most 15 ppm of DMC catalyst.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: April 6, 2004
    Assignee: Shell Oil Company
    Inventors: Michiel Barend Eleveld, Robert Adrianus Wilhelmus Grotenbreg, Ronald Van Kempen
  • Publication number: 20040063992
    Abstract: A process for reaction and separation which comprises inputting a process material into at least one column of a plurality of columns wherein each column has at least one inlet for accepting flow from another column or group of columns, an external feed stream, an external eluent stream or a combination thereof, and each column has at least one outlet for connecting to another column, a group of columns, an external product stream or a combination thereof. Each column is independently operable in an up-flow or down-flow mode and connected independently to one of the group comprising another column, an external feed stream, an external eluent stream, an external product stream and combinations thereof.
    Type: Application
    Filed: April 11, 2003
    Publication date: April 1, 2004
    Inventors: Chen-Chou Chiang, David L. Fair
  • Publication number: 20040034246
    Abstract: Radiolabeled fluorinated compounds useful for imaging in the diagnosis of Parkinson's Disease are disclosed. Methods and kits for their synthesis are also disclosed.
    Type: Application
    Filed: May 29, 2003
    Publication date: February 19, 2004
    Inventors: G. Keith Mulholland, Martin J. O'Donnell, Frederick T. Chin, Francisca Delgado
  • Publication number: 20040030054
    Abstract: The present invention relates to an oxidation reaction catalyzed by a reaction controlled phase-transfer catalyst having the general formula of [(R1)(R2)(R3)(R4)N]xHy[A]A] or QmMO3(L). The catalysts themselves are not soluble in the reaction medium, but can form an active species that is soluble in the reaction medium under the action of one of the reactants. The active species can in turn react selectively with another reactant. When one of the reactants is completely consumed, the catalyst will separate out from the reacting system and can be recovered by means of simple separation method. The recovered catalyst can be recycled with comparable efficiency as that of the original catalyst. The separation of said catalyst is similar to that of heterogeneous catalyst while said catalyst will completely exhibit the characteristics of homogeneous catalyst during the reaction.
    Type: Application
    Filed: May 28, 2003
    Publication date: February 12, 2004
    Inventors: Zuwei Xi, Yu Sun, Kunlan Li, Ning Zhou
  • Publication number: 20040015005
    Abstract: The present invention provides a method for preparing ester or thioester that can conduct catalytic esterification reaction with an equimolar amount of carboxylic acid and alcohol, or catalytic thioesterification reaction with carboxylic acid and an equimolar amount or small amount of thiol, and can be expected as an industrial method that needs an enormous amount of synthesis in the light of green chemistry. By using hafnium chloride (IV), especially tetravalent hafnium compounds represented by hafnium chloride (IV)•(THF)2 or hafnium (IV)t-butoxide as a (poly) condensation catalyst, direct condensation reaction is conducted from carboxylic acid and an equimolar amount of alcohol or a little smaller amount of thiol, in the nonpolar solvent such as toluene and the like, in a deoxidization atmosphere and under heating reflux, and the reaction synthesizes ester monomer or thioester monomer, polyester or polythioester.
    Type: Application
    Filed: April 14, 2003
    Publication date: January 22, 2004
    Inventors: Kazuaki Ishihara, Hisashi Yamamoto
  • Publication number: 20040015006
    Abstract: The production process of the present invention comprises a step of allowing a carboxylic acid derivative represented by the formula (1): 1
    Type: Application
    Filed: April 17, 2003
    Publication date: January 22, 2004
    Inventors: Shinya Nagano, Horoshi Shimojitosho
  • Publication number: 20040014832
    Abstract: Compounds of formula Ia, Ib and Ic, (Ic), in which R, R1 and R2 are e.g. phenyl, naphthyl, anthracyl, phenanthryl or a heterocyclic radical, are suitable as photoinitiators which accumulate at the surface of coatings.
    Type: Application
    Filed: February 3, 2003
    Publication date: January 22, 2004
    Inventors: Gisele Baudin, Tunja Jung
  • Publication number: 20030232276
    Abstract: Provided are polymers derived from fluoroalkyl norbornenes, fluorinated crotonates, fluorinated allyl alcohols, and combinations of two or more thereof for use in a wide variety of applications, including photoresist compositions. Also provided are methods for producing the fluoroalkyl norbornenes, fluorinated crotonates, and fluorinated allyl alcohols for use in the present polymers.
    Type: Application
    Filed: February 21, 2003
    Publication date: December 18, 2003
    Inventors: Andrew J. Poss, Haridasan K. Nair, David Nalewajek, Timothy R. Demmin
  • Publication number: 20030224409
    Abstract: The present invention provides a method for producing a mass-coded combinatorial library comprising a set of compounds having the general formula X(Y)n, where X is a scaffold, each Y is, independently, a peripheral moiety, and n is an integer greater than 1. The method comprises selecting a peripheral moiety precursor subset from a peripheral moiety precursor set. The subset includes a sufficient number of peripheral moiety precursors that at least about 50 distinct combinations of n peripheral moieties derived from the peripheral moiety precursors in the subset exist. The subset of peripheral moiety precursors is selected so that at least about 90% of all possible combinations of n peripheral moieties derived from the subset have a molecular mass sum which is distinct from the molecular mass sums of all of the other combinations of n peripheral moieties. The method further comprises contacting the peripheral moiety precursor subset with a scaffold precursor which has n reactive groups.
    Type: Application
    Filed: March 11, 2003
    Publication date: December 4, 2003
    Applicant: Neogenesis, Inc., a Delaware corporation
    Inventors: Huw M. Nash, Seth Birnbaum, Edward A. Wintner, Krishna Kalghatgi, Gerald Shipps, Satish Jindal
  • Publication number: 20030224250
    Abstract: A novel liquid photoreactive asymmetric acrylate compound containing sulfur, aromatic moieties, and optionally bromine, and having high dynamic range sensitivity is disclosed. The acrylate compound is a monomer for a photoimageable system. In one embodiment, when about 2-8% by weight of the acrylate compound is dissolved in a two-component urethane matrix system and incorporated in an optical article formed by reacting the two-component urethane matrix system, the optical article shows a sensitivity of about 4 or more and a shrinkage during the formation of the optical article of about 0.05% versus a sensitivity of 2.26 and a shrinkage of 0.13% when tribromophenyl acrylate, a commercial monomer, was used.
    Type: Application
    Filed: May 29, 2003
    Publication date: December 4, 2003
    Inventors: Songvit Setthachayanon, Xuan T. Phan, Mark David Michaels, Benjamin C. Ihas
  • Publication number: 20030187292
    Abstract: A method for producing an ester that comprises reacting an alcohol with a carboxylic acid to obtain a crude esterified product; and adding 5 to 100 parts by weight of a hydrocarbon solvent with respect to 100 parts by weight of the crude esterified product and performing neutralization with an alkali aqueous solution. An alcohol solvent can be added, if necessary. Thus, a-method for producing ester is provided in which a high-quality ester can be obtained with high yield.
    Type: Application
    Filed: March 11, 2003
    Publication date: October 2, 2003
    Inventors: Michimasa Memita, Keiji Hirao
  • Publication number: 20030181753
    Abstract: The invention relates to a method for producing amides or esters from carboxylic acids and from an amine constituent or alcohol constituent in the presence of a 1,3,5-triazine and optionally in the presence of an organic solvent and of a tertiary amine. According to the invention, a (bi)cyclic diamine or an adduct formed therefrom with the triazine constituent is used as a tertiary amine in a preferred stoichiometric ratio of diamine to the triazine constituent ranging from 0.30 to 1.10; the stoichiometric ratio of carboxylic acid to the amine constituent or alcohol constituent should range from 0.2 to 5.0, and; the molar ratio of carboxylic acid to the triazine constituent ranges from 0.5 to 1.5. Amino acids such as N-protected amino acids and peptides serve as carboxylic acid constituents and (C-protected) amino acids or a C-protected peptide serve as the amine constituent.
    Type: Application
    Filed: May 15, 2003
    Publication date: September 25, 2003
    Inventors: Harald Groger, Jurgen Sans, Anita Barthuber, Roswitha Haindl
  • Patent number: 6623665
    Abstract: The present invention relates to nonlinear optical (NLO) materials, compositions thereof and NLO devices using polymeric matrices supporting a second order NLO material defined by the formula ED—B—EW  (I) where ED is an electron donating moiety, B is a bridging moiety, and EW is the electron withdrawing moiety (terminal acceptor group) defined by formula II, where C1 is a carbon atom linked through a double bond to a cyclic or an acylic carbon atom in the bridging moiety, and A1, A2, A3 or A4are the same or different from one another, each of which is an electron withdrawing group such as CN, COR, COOR, COOH or CH═C(R)2 where R is a C1-6 alkyl.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: September 23, 2003
    Assignee: Lockheed Martin Corporation
    Inventor: Susan P. Ermer
  • Patent number: 6624286
    Abstract: The invention relates to new improved double-metal cyanide (DMC) catalysts for the preparation of polyether-polyols by polyaddition of alkylene oxides on to starter compounds containing active hydrogen atoms, the catalyst comprising a double-metal cyanide compound, an organic complexing ligand and 5-80 wt. %, based on the amount of catalyst, of a polyester. For the preparation of polyether-polyols, the new improved catalysts have significantly shortened induction times and at the same time a greatly increased activity.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: September 23, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jörg Hofmann, Pramod Gupta, Robert-Joseph Kumpf, Pieter Ooms, Walter Schäfer
  • Publication number: 20030166960
    Abstract: The invention relates to a method of purifying a hydrophobin present in a hydrophobin-containing solution. According to the invention the solution is contacted with a surface for the adsorption to that surface, and separated from a solution depleted in hydrophobin. Subsequently the surface is contacted with a solution containing a surfactant at a temperature lower than 90° C. Desorbed hydrophobin is separated from said surface.
    Type: Application
    Filed: November 25, 2002
    Publication date: September 4, 2003
    Inventors: Marcel Leo de Vocht, Herman Abel B. Wosten, Joseph Gerard H. Wessels
  • Patent number: 6613932
    Abstract: A prostaglandin derivative represented by the formula: [wherein X is CH2, O or S(O)q1, Y is an ethylene group, a vinylene group, an ethynylene group, O(CH2)t1 or S(O)q2(CH2)t1, Z is an ethylene group, a vinylene group or an ethynylene group, R1 is a hydrogen atom, a C1-10 alkyl group or a C3-10 cycloalkyl group, R2 is a C1-10 alkyl group, a C2-10 alkenyl group, a C2-10 alkynyl group, a C3-10 cycloalkyl group, a C1-5 alkyl-C3-10 cycloalkyl group, a C3-10 cycloalkyl-C1-5 alkyl group, a hydroxy-C1-5 alkyl group, a halogeno-C1-5 alkyl group, a C1-5 alkoxy-C1-5 alkyl group, a C2-4 alkoxycarbonyl-C1-5 alkyl group, a carboxyl-C1-5 alkyl group, a cyano-C1-5 alkyl group, a C1-5 alkyl group substituted with a group represented by the formula: —NR7R8, an acyl group, a group represented by the formula: —(CH2)t2CH(NH2)COOR9, etc., and R3 is a hydrogen atom, a C1-10 alkyl group, etc.], a pharmaceutically acceptable salt thereof or a hydrate thereof.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: September 2, 2003
    Assignees: Taisho Pharmaceutical Co., Ltd., Fumie Sato
    Inventors: Fumie Sato, Tohru Tanami, Hideo Tanaka, Naoya Ono, Makoto Yagi, Hitomi Hirano
  • Publication number: 20030149293
    Abstract: A method for producing 1,3-cyclohexanediol compounds, particularly a 1,3-cyclohexanediol compound rich in cis-form. A 1,3-cyclohexanediol compound is reduced with a boron hydride compound such as sodium borohydride. Selectivity of cis-form is improved when an alkali metal compound and/or an alkaline earth metal compound, particularly a halide, is allowed to exist in the reaction system.
    Type: Application
    Filed: February 5, 2003
    Publication date: August 7, 2003
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shuji Ichikawa, Hisao Urata, Shihomi Suzuki
  • Patent number: 6602515
    Abstract: A compound of formula I wherein A is a moiety which provides UV absorbing activity to the compound of formula I that comprises 1 divalent group or 2 monovalent groups, with at least one group having carbonyl (C═O) functionality, and each R is independently linear or branched C1-C8 alkyl. Sunscreen formulations which contain these compounds and methods using these compounds to prepare formulations are also provided.
    Type: Grant
    Filed: July 16, 2001
    Date of Patent: August 5, 2003
    Assignee: EM Industries
    Inventor: Ratan K. Chaudhuri
  • Publication number: 20030119712
    Abstract: The present invention relates to a compound of formula 1
    Type: Application
    Filed: November 1, 2002
    Publication date: June 26, 2003
    Inventors: Charles Fehr, Pierre-Alain Blanc
  • Publication number: 20030114712
    Abstract: The present invention provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound thereon and an oxidative catalyst thereon, and oxidizing the alcohol compound in the presence of an oxidizing agent, giving an oxide higher in oxidizing degree than the alcohol compound, and also provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound, and subjecting the alcohol compound to an electrolytic oxidation, giving an oxide higher in oxidizing degree than the alcohol compound.
    Type: Application
    Filed: November 28, 2001
    Publication date: June 19, 2003
    Inventors: Hideo Tanaka, Yutaka Kameyama
  • Publication number: 20030109741
    Abstract: Described are complex mixtures of partial esters of polybasic organic acids and long-chain alkanols, alkoxyalkanols and diols, especially thick oils from the oxo process, their preparation and their use as inexpensive high-performance emulsifiers and especially as assistants in leather manufacture.
    Type: Application
    Filed: September 16, 2002
    Publication date: June 12, 2003
    Inventors: Peter Weyland, Susanne Demharter, Peter Danisch, Gunter Oetter
  • Publication number: 20030073861
    Abstract: The invention relates to a preparation process for making peroxy esters and peroxy carbonates, peroxy ester peroxy carbonates, mixed diperoxides, mixed diperoxy esters, and mixed diperoxy carbonates, and to specific monoperoxy esters, monoperoxy carbonates, mixed peroxides, mixed diperoxy esters, mixed diperoxy carbonates, peroxy ester peroxy carbonates, and mixtures thereof. The process involves the reaction of a type-3 ketone peroxide with a reactive carbonyl compound and optional subsequent reaction with an alkyl vinyl ether, acetal, halogen formate, or carboxylic acid anhydride.
    Type: Application
    Filed: October 23, 2002
    Publication date: April 17, 2003
    Inventors: Anna Gerdine Van De Bovenkamp-Bouwman, Joachim Willem J. Van Gendt, John Meijer, Bart Fischer, Andreas Herman Hogt
  • Publication number: 20030045749
    Abstract: A method for producing an organic acid and/or an organic acid ester which utilizes a steam system permitting stable production of an organic acid and/or an organic acid ester and realizing a high thermal efficiency constantly relative to the waste heat generated in the process of the production is provided. More particularly, this invention concerns a method for the production of an organic acid and/or an organic acid ester, wherein heat generated in the process for producing an organic acid and/or an organic acid ester is recovered in the form of steam, and the steam is used in any of the following forms: {circle over (1)} thermal energy, {circle over (2)} dynamic energy, and {circle over (3)} electrical energy in the process for producing an organic acid and/or an organic acid ester.
    Type: Application
    Filed: August 21, 2002
    Publication date: March 6, 2003
    Inventors: Takeshi Nishimura, Tetsuji Mitsumoto, Kazuhiko Sakamoto, Hidefumi Haramaki
  • Patent number: 6509312
    Abstract: The compounds of formula wherein R1 represents a methyl or ethyl group, R2 represents an ethyl group, a linear or branched propyl group, or an isobutyl group and the wavy bond indicates that the carbon number 2 is asymmetric and can adopt a configuration R or S, are useful as perfuming ingredients for the preparation of perfumes, perfuming compositions and perfumed articles. They can be used to impart a very natural fruity note.
    Type: Grant
    Filed: June 26, 2000
    Date of Patent: January 21, 2003
    Assignee: Firmenich SA
    Inventor: Wolfgang Klaus Giersch
  • Patent number: 6479627
    Abstract: An object of the present invention is to provide an aqueous solution of lactoferrin which can be preserved for a long period of time. The aqueous preparation according to the present invention is an aqueous preparation which is characterized by containing a polyvalent inorganic or organic acid or a salt thereof whereby stability of lactoferrin is improved and is an aqueous preparation in which concentration of the polyvalent inorganic or organic acid or a salt thereof is 0.005% (w/v) or more. In the case of ophthalmic solutions, for example, the polyvalent inorganic or organic acid or a salt thereof is preferably 0.01-3.0% (w/v), particularly preferably 0.1-1.0% (w/v).
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: November 12, 2002
    Assignee: Santen Pharmaceutical Co., Ltd.
    Inventors: Atsutoshi Ota, Mitsuaki Kuwano, Hiroyuki Asada
  • Patent number: 6479710
    Abstract: A solid acid-base catalyst contains vanadium pentoxide hydrate. Moreover, it is preferable that the vanadium pentoxide hydrate in the solid acid-base catalyst has a composition which is represented by the following general equation (1): V2O5.nH2O  (1) (n: 0.1-3). Creation of the vanadium pentoxide hydrate was confirmed by measuring X-ray diffraction spectrum shown in FIG. 1. In accordance with the above arrangement, the solid acid-base catalyst can sufficiently display catalytic activity under mild conditions, and it can be suitably applied to various reactions, such as the syntheses of olefins or ethers through dehydration reactions of alcohols, the syntheses of aldehydes or ketones through dehydrogenation reactions of alcohols, hydrations and isomerization reactions of olefins, alkylations, esterifications, amidations, acetalizations, aminations, hydrogen shift reactions, aldol condensation reactions and polymerization reactions.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: November 12, 2002
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Nobuji Kishimoto, Etsushige Matsunami
  • Patent number: 6465676
    Abstract: An aminopolycarboxylate is described, which is represented by the following formula (1): wherein M1, M2, M3 and M4 independently represent each an alkali metal ion. A process for producing the aminopolycarboxylate; a biodegradable chelating agent which comprises as the active component the aminopolycarboxylate; and a sequestering agent which comprises as the active component the aminopolycarboxylate are also described.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: October 15, 2002
    Assignee: Tosoh Corporation
    Inventors: Masahiro Aoki, Yasushi Hara
  • Patent number: 6458948
    Abstract: A method of preparing carboxylic acid derivatives comprising mixing a quaternary ammonium salt having a particular triazine ring in the molecules thereof, a carboxylic acid compound and a compound having a nucleophilic functional group, to condense the carboxylic acid with the compound having the nucleophilic functional group. The invention further provides a condensing agent comprising the quaternary ammonium salt. The condensation is conducted under mild conditions to form carboxylic acid derivatives and, particularly, amide compounds or ester compounds maintaining high yields.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: October 1, 2002
    Assignee: Tokuyama Corporation
    Inventors: Fumiaki Iwasaki, Shohei Tani, Munetaka Kunishima, Keiji Terao, Michiko Miharu, Naoki Hirano, Masako Saijyo
  • Patent number: 6448420
    Abstract: A novel ester compound having an exo-form 2-alkylbicyclo[2.2.1]heptan-2-yl ester as the acid-decomposable site is used as a dissolution regulator to formulate a resist composition having a high sensitivity, resolution, etching resistance and storage stability.
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: September 10, 2002
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Takeshi Kinsho, Tsunehiro Nishi, Takeru Watanabe, Koji Hasegawa, Mutsuo Nakashima, Jun Hatakeyama
  • Patent number: 6444841
    Abstract: A highly pure hydroquinone dietser derivative can be produced from the reaction product of ketoisophorone with an acylating agent in a high yield by a simple and easy operation. In the presence of an acid catalyst, a cyclohex-2-ene-1,4-dione derivative shown by the following formula (3) was allowed to react with an acylating agent (e.g., acetic anhydride), and the reaction product was purified by crystallization to obtain a hydroquinone diester derivative shown by the following formula (1). The compound (1) contains about 0 to 4% by weight of a catechol diester derivative represented by the following formula (2), being highly pure. As a solvent for crystallization, a mixed solvent of an organic carboxylic acid (e.g., acetic acid) corresponding to the acylating agent and water may be used. In the formulae, R1 and R2 each represents an alkyl group, a cycloalkyl group, an aryl group or a heterocyclic group.
    Type: Grant
    Filed: October 30, 1998
    Date of Patent: September 3, 2002
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Ikuo Takahashi, Hikaru Shibata
  • Patent number: 6436373
    Abstract: Oligomeric 4,4-diarylbutadienecarboxylates and -carboxamides of the formula I in which R1 and R2 independently of one another are hydrogen, an aliphatic, cycloaliphatic, aromatic, araliphatic or heterocyclic radical or substituents which confer solubility in water, chosen from the group consisting of carboxylate, sulfonate or ammonium radicals; R3 is an aliphatic, cycloaliphatic, aromatic, araliphatic or heterocyclic radical or a radical which is bonded by a carbonyl, sulfonyl or a phosphonyl group, or is a carboxylate or a cyano group; Y is the group; in which R4 is hydrogen, an aliphatic, cycloaliphatic, aromatic, araliphatic or heterocyclic radical and m is from 2 to 10, n is from 1 to 3, and x is the m-valent radical of a polyol having from 2 to 10 hydroxyl groups.
    Type: Grant
    Filed: December 6, 1999
    Date of Patent: August 20, 2002
    Assignee: BASF Aktiengesellschaft
    Inventors: Thorsten Habeck, Thomas Wünsch, Horst Westenfelder
  • Publication number: 20020087017
    Abstract: P-chiral bisphospholane ligands and methods for their preparation are described. Use of metal/P-chiral bisphospholane complexes to catalyze asymmetric transformation reactions to provide high enantiomeric excesses of formed compounds is also described.
    Type: Application
    Filed: December 12, 2001
    Publication date: July 4, 2002
    Inventors: Garrett Stewart Hoge, Om Prakash Goel
  • Patent number: 6399810
    Abstract: Methyl cyclohexyl-propionate is prepared by the hydrogenation of methyl cinnamate in the presence of a ruthenium and/or palladium catalyst.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: June 4, 2002
    Assignee: Haarmann & Reimer GmbH
    Inventors: Walter Kuhn, Hans-Ulrich Funk, Gerhard Senft, Wolfgang Kiel
  • Patent number: 6380156
    Abstract: Disclosed is a synthetic method for the preparation of analogs of Didemnin A (1), particularly the Amino-Hip analog of Didemnin A, also known as “AipDidemnin A” (8).
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: April 30, 2002
    Assignee: The Board of Trustees of the University of Illnois
    Inventors: Kenneth L. Rinehart, Alexandra J. Katauskas
  • Patent number: 6369263
    Abstract: A hydroquinone diester derivative represented by the formula (1): wherein R1 and R2 are the same or different, each representing an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group is crystallized from a reaction mixture containing the hydroquinone diester derivative, and the resulting product in crystallized form is washed. A solvent for the crystallization is composed of an organic carboxylic acid and water, and the crystallized product is washed with warm or hot water of 40° C. or above. In the formula (1), R1 and R2 are C1-4alkyl groups.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: April 9, 2002
    Assignee: Daicel Chemical Industries, Ltd.
    Inventor: Tomohide Ina
  • Publication number: 20020037922
    Abstract: This invention provides O-&agr;-acyloxyalkyl ethers of the venlafaxine metabolite 4-[2-(Dimethylamino-1-(1-hydroxycyclohexyl)ethyl]phenol, represented by Formula (I): 1
    Type: Application
    Filed: November 21, 2001
    Publication date: March 28, 2002
    Applicant: American Home Products Corporation
    Inventors: John P. Yardley, Magid A. Abou-Gharbia, John W. Ullrich
  • Patent number: 6350897
    Abstract: A process for preparing trimethylhydroquinone diacetate, with subsequent hydrolysis to give trimethylhydroquinone, the process including reacting 2,2,6-trimethylcyclohexane-1,4-dione under oxidative conditions, in the presence of a sulfonating agent and a strong acid, and in the presence of an acylating agent.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: February 26, 2002
    Assignee: Degussa AG
    Inventors: Steffen Krill, Klaus Huthmacher
  • Patent number: 6348563
    Abstract: The present invention provides a p-hydroxybenzoic ester represented by the formula (1) wherein R1 represents a C6-C10 straight-chain or branched-chain alkyl group, A1 represents a C2-C4 alkylene group and n in an integer of 1 to 8, a plasticizer for at least one polyamide resin selected from nylon 11 and nylon 12 which comprises the ester, a polyamide resin composition comprising the ester and at least one polyamide resin selected from nylon 11 and nylon 12, and a polyamide resin molded article comprising the ester and having excellent high-temperature volatilization resistance and low-temperature impact resistance.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: February 19, 2002
    Assignee: New Japan Chemical Co., Ltd.
    Inventors: Hideo Fukuda, Yoshifumi Fujitani, Ryuichi Kohzu
  • Patent number: 6337350
    Abstract: Derivatives of aryl and heterocyclic ureido and aryl and heterocyclic carboxamido phenoxy isobutyric acids have been found to inhibit the nonenzymatic glycation of proteins which often results in formation of advanced glycation endproducts and crosslinks. Many other phenoxyisobutyric acid derivatives as well as certain other compounds as set out in this disclosure also have been found to inhibit the nonenzymatic glycation of proteins. The nonenzymatic glycation and crosslinking of proteins is a part of the aging process with the glycation endproducts and crosslinking of long-lived proteins increasing with age. This process is increased at elevated concentrations of reducing sugars in the blood and in the intracellular environment such as occurs with diabetes. The structural and functional integrity of the affected molecules become perturbed by these modifications and can result in severe consequences.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: January 8, 2002
    Assignee: City of Hope
    Inventors: Samuel Rahbar, Iraj Lalezari