Forming The Benzene Ring Patents (Class 570/146)
  • Patent number: 6784327
    Abstract: A process for the production of a fluorinated organic compound, characterized by fluorinating an organic compound having a hydrogen atoms using IF5; and a novel fluorination process for fluorinating an organic compound having a hydrogen atoms by using a fluorinating agent containing IF5 and at least one member selected from the group consisting of acids, bases, salts and additives.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: August 31, 2004
    Assignee: Daikin Industries, Ltd.
    Inventors: Norihiko Yoneda, Tsuyoshi Fukuhara, Kazuhiro Shimokawa, Kenji Adachi, Satoshi Oishi
  • Patent number: 6297205
    Abstract: A monohydric alcohol-free, transparent, moisturizing bar soap having a high humectant solvent content. The formulation includes: (i) from about 38% to about 96% of one or more humectant solvents and (ii) from about 3% to about 20% of insoluble and/or soluble fatty acid soaps, with at least about 3% insoluble fatty acid soap. The weight ratio of humectant solvent to insoluble fatty acid soap ranges from about 3:1 to about 23:1. The bar soap has a standardized wear rate of less than about 15% and a hardness of from about 30 to about 100 hardness units. The transparent solid bar soap may be manufactured by a “hot pour” process with conventional batch mixing equipment designed for relatively moderate temperatures; accordingly, the bar soap may be packaged for final consumer use in the mold in which it was formed.
    Type: Grant
    Filed: August 30, 1999
    Date of Patent: October 2, 2001
    Assignee: Amway Corporation
    Inventors: Rahul Saxena, William M. Luke
  • Patent number: 6008407
    Abstract: The present invention provides a method of preparing ortho-difluorobenzene derivatives, which comprises (a) providing a mixture of cyclohexenes by reacting chlorotrifluoroethylene (CTFE) and 1.3-diene in a flow reactor and distilling the resultant, and (b) dehydrohalogenating the mixture of cyclohexenes with a phase transition catalyst in :he presence of alkali metal hydroxide at temperature range of 40 to 150.degree. C. without using any organic solvent. The distillate having low boiling point, which is obtained during distillation of the resultant, is recycled into the flow reactor. The present invention also provides a method of preparing 2-chloro-4,5-difluorobenzoic acid, which comprises (a) providing a mixture of 4-chloro-1-methyl-4,5,5-trifluorocyclohexene and 5-chloro-1-methyl-4,4,5-trifluorocyclohexene by reacting chlorotrifluoroethylene (CTFE) and isoprene and distilling the resultant.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: December 28, 1999
    Assignees: Zelinsky Institute of Organic Chemistry, Samsung General Chemicals Co., Ltd.
    Inventors: Oleg Matveyevich Nefedov, Nikolay Vasiljcvich Volchkov, Mariya Borisovna Lipkind, Ho Seong Lee, Young Jun Park, Min Hwan Kim
  • Patent number: 5026929
    Abstract: A process is disclosed for making a highly fluorinated aromatic compound by contacting a perfluorocycloalkane, such as perfluorodecahydronaphthalene, with a complex of a metal from Groups IA and IIA of the Periodic Table and an organic electron acceptor. The reaction is carried out in an organic solvent and under reducing conditions which are relatively moderate. Best results are obtained using a perfluorocycloalkane having 2-4 condensed rings and a complex of either sodium or lithium and benzophenone thereby making a perfluorinated condensed ring aromatic compound such as perfluoronaphthalene or perfluorophenanthrene.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: June 25, 1991
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John A. Marsella, Guido P. Pez, Anne M. Coughlin
  • Patent number: 4990699
    Abstract: Despite the instabity of perfluoralkyl anions, it is possible to perfluoroalkylate aromatic compounds if appropriately substituted by suitable electronegative substituents (e.g., nitro, trifluoromethylsulfonyl, etc.). Thus a novel Meisenheimer complex is formed by thermally decomposing a salt of a perfluoroalkanoic acid in the presence of an aromatic compound such as 1,3,5-trinitrobenzene. Oxidation with organic hypochlorite yields the corresponding perfluoroalkylated aromatic compound.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: February 5, 1991
    Assignee: Ethyl Corporation
    Inventor: G. Patrick Stahly
  • Patent number: 4968830
    Abstract: Halogen substituted aromatic compounds of the formula ##STR1## wherein Y is selected from the group CO.sub.2 H, COF, COCl, COBr, CF.sub.3, CN, NCO, or F, and X and X' are independently hydrogen or a halogen selected from the group F-, Cl- and Br-, at least one of X and X' being halogen; may be prepared by the liquid phase reaction of a brominating agent, at temperatures below about 190.degree. Celsius, with a correspondingly substituted cyclohexene or cyclohexadiene.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: November 6, 1990
    Assignee: Occidental Chemical Corporation
    Inventor: David Y. Tang
  • Patent number: 4754084
    Abstract: Substituted fluorobenzenes are produced by pyrolyzing vinylfluorocyclobutanes at a temperature of 250.degree.-450.degree. C. in the presence of activated carbon or certain metal oxides or mixtures of metal oxides.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: June 28, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Frank J. Weigert
  • Patent number: 4390740
    Abstract: Monofluorobenzene is prepared in a good yield by reacting cyclopentadiene or its dimer of the formula: ##STR1## with fluorohalomethane of the formula:CHFX.sub.2wherein Xs are, same or different, halogen atoms in the presence of a phase transfer catalyst and an acid acceptor.
    Type: Grant
    Filed: December 10, 1981
    Date of Patent: June 28, 1983
    Assignee: Daikin Kogyo Co., Ltd.
    Inventors: Iwao Tabushi, Kazuhiro Shimokawa, Daiji Naito, Susumu Misaki, Tsutomu Yoshida