Halogen Containing Patents (Class 568/74)
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Patent number: 7087661Abstract: The present invention provides compounds and materials that reduce the accumulation of microorganisms a surface, by interfering with the attachment of the organisms to the surface. The compounds and materials are thus useful in preventing the formation of biofilms on surfaces in health-related environments. By preventing the formation of biofilms, the compounds formulated according to the present invention can be used in the fabrication of grafts, implants, medical devices in order to prevent infection thereof. The compounds formulated according to the present invention display an additional anticoagulant property, permitting their use in settings where decrease in blood coagulability is desirable.Type: GrantFiled: September 23, 1999Date of Patent: August 8, 2006Assignee: Cernofina, LLCInventors: Randall S. Alberte, Richard C. Zimmerman
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Patent number: 7060858Abstract: It is an object of the invention to provide a method which makes it possible to manufacture the desired sulfonium salts directly without using a metathesis process and without using acids in large excess amounts. An aryl compound (A) in which a hydrogen atom is bonded to at least one of the carbon atoms of the aryl group, and a sulfoxide compound (B) which can be expressed by the formula: R1 SO R2 (where R1 and R2 indicate hydrocarbon groups or heterocyclic groups which may be substituted, and which may be the same or different) are reacted in the presence of a strong acid (C) which can be expressed by the formula: HMXmYn (where M indicates an element of group IIIa or group Va of the periodic table, X indicates a halogen atom, Y indicates a hydroxyl group, m and n are integers which are such that m+n=4 and n=0 to 3 in cases where M is an element of group IIIa, and m and n are integers which are such that m+n=6 and n=0 to 2 in cases where M is an element of group Va).Type: GrantFiled: December 17, 2001Date of Patent: June 13, 2006Assignee: San-Apro LimitedInventors: Masashi Date, Hideki Kimura, Jiro Yamamoto
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Patent number: 7033727Abstract: A photosensitive composition of the present invention has excellent sensitivity and pattern profile, which comprises an acid generator having a specific structure.Type: GrantFiled: September 24, 2003Date of Patent: April 25, 2006Assignee: Fuji Photo Film Co., Ltd.Inventor: Kunihiko Kodama
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Patent number: 7015176Abstract: A process is described for the synthesis of an aryl sulfur pentafluoride compound. In one embodiment of the present invention, there is provided a process for preparing an aryl sulfurpentafluoride compound comprising: combining an at least one aryl sulfur compound with a fluorinating agent to at least partially react and form an intermediate aryl sulfurtrifluoride product; and exposing the intermediate aryl sulfurtrifluoride product to the fluorinating agent and optionally a fluoride source to at least partially react and form the aryl sulfurpentafluoride compound.Type: GrantFiled: June 3, 2003Date of Patent: March 21, 2006Assignee: Air Products and Chemicals, Inc.Inventors: Wade H. Bailey, III, William J. Casteel, Jr., Reno J. Pesaresi, Frank M. Prozonic
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Patent number: 6919484Abstract: The subject invention provides convenient, regiospecific and highly stereoselective addition of SF5Cl in high yield to a variety of alkenes and alkynes.Type: GrantFiled: July 24, 2003Date of Patent: July 19, 2005Assignee: University of FloridaInventors: William R. Dolbier, Jr., Samia Aït-Mohand, Tatiana Sergeeva
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Patent number: 6824706Abstract: The invention relates to new mono-, oligo- and poly-difluorovinyl(hetero)arylenes comprising one or more identical or different recurring units of formula I wherein D, D′, Ar, a and b have the meanings as defined in herein. Furthermore the inventions relates to their synthesis, their use as semiconductors or charge transport materials and their different applications.Type: GrantFiled: July 24, 2002Date of Patent: November 30, 2004Assignee: Merck Patent Gesellschaft mit beschrank HaftungInventors: Martin Heeney, Louise Farrand, Mark Giles, Marcus Thompson, Steven Tierney, Maxim Shkunov, David Sparrowe, Iain McCulloch
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Patent number: 6806388Abstract: The invention provides polyfluorinated aromatic or heterocyclic compounds comprising at least three ring substituents, at least one of which comprises a sulfurpentafluoride group and at least one of which comprises a labile group; methods for their preparation are also disclosed. Preferably, the compounds comprise either two sulfurpentafluoride groups or one sulfurpentafluoride group and one other polyfluorinated group, such as a trifluoromethyl group. Said labile group preferably comprises an amino, bromo or nitro group. Said compounds are useful in the preparation of medicaments.Type: GrantFiled: November 15, 2002Date of Patent: October 19, 2004Assignee: F2 Chemicals LimitedInventors: Roy Dennis Bowden, Martin Paul Greenhall
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Patent number: 6770776Abstract: Fluorocarbon compounds are synthesized by reacting a substrate hydrocarbyl compound containing at least one sp3-hybridized halophoric carbon atom bearing at least two halogen atom substituents, at least one of which is a halogen atom having an atomic number greater than that of fluorine and the at least one halophoric carbon atom being bonded to at least one chalcogen, with at least one reactant which comprises a complex of a Bronstedt base with a defined amount n of hydrofluoric acid, n being at least 3 and not greater than 20.Type: GrantFiled: September 25, 2001Date of Patent: August 3, 2004Assignee: Rhone-Poulenc ChimieInventors: Robert Janin, Laurent Saint-Jalmes
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Electrochemically stable onium salts and electrolytes containing such for electrochemical capacitors
Patent number: 6743947Abstract: Based on the discovery that the melting point and solubility of onium salts are affected by the asymmetry of the substitution on cation, and that the branched substituents effectively shield onium cations from electrochemical reduction, new onium salts are synthesized and high performance electrolytes based on these salts for electrochemical capacitor are provided. The composition of the new electrolyte comprises an onium salt or mixture of such onium salts dissolved in aprotic, non-aqueous solvents or mixture of such solvents. The electrolyte is able to perform at high rate of charge/discharge, at low ambient temperatures, and within wide operating voltage, due to the high solubility, low melting temperature, and the improved reduction stability of the new onium cations, respectively.Type: GrantFiled: May 10, 1999Date of Patent: June 1, 2004Assignee: The United States of America as represented by the Secretary of the ArmyInventors: Kang Xu, Shengping Ding, T. Richard Jow -
Patent number: 6630210Abstract: The invention relates to pentafluorosulfuranylbenzene derivatives of the formula I in which R1, A1, A2, Z1, L1, L2, L3 and n are as defined herein and to the use thereof in liquid-crystalline media.Type: GrantFiled: June 27, 2001Date of Patent: October 7, 2003Assignee: Merck GmbHInventors: Peer Kirsch, Joachim Krause, Michael Heckmeier
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Patent number: 6576684Abstract: Disclosed are compositions from which radically initiated oligomers/polymers having a controlled molecular weight, low polydispersity and a vinyl or dienyl end group are prepared. Further subjects of the invention are a process for controlled radical polymerization, oligomers/polymers obtainable by said process and the use of specific addition fragmentation agents for the polymerization process. The addition fragmentation agents are new in part and these are also subject of the present invention. The addition fragmentation agents are of the formula (Ia), (Ib) or (Ic) where Y is a group which activates the double bond towards Michael addition.Type: GrantFiled: February 15, 2001Date of Patent: June 10, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Vincent Desobry, Peter Murer, Anne Schuwey
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Publication number: 20030060664Abstract: A method for producing a fluoropolymer, which comprises polymerizing a monomer containing a fluoromonomer having a polymerizable double bond, using an initiator, in a medium containing fluoroform and water, under a condition such that fluoroform is in a supercritical state.Type: ApplicationFiled: September 26, 2002Publication date: March 27, 2003Applicant: Asahi Glass Company, LimitedInventors: Yoshio Okahata, Toshiaki Mori, Yuri Tsuchiya
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Patent number: 6380277Abstract: The present invention relates to iodonium salts containing urethane groups of reduced crystallization tendency, to a process for their preparation, and to their use for the radiation curing of cationically curing compositions.Type: GrantFiled: September 19, 2000Date of Patent: April 30, 2002Assignee: Goldschmidt AGInventors: Sascha Oestreich, Andreas Weier, Stefanie Volkmer
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Patent number: 6365676Abstract: The invention concerns a process for the reaction of a perfluoroalkyl iodide of the formula CF3(CF2)h—I, where h is an integer from 4 to 18, with a compound having a terminal olefinic group, which comprises conducting said reaction in an aqueous medium containing 5 to 40% by weight of a water-soluble solvent and in the presence of from 0.02 to 0.5 equivalents of dithionite ion, based on the perfluoroalkyl iodide, at a temperature of from 0 to 40° C. and at a pH greater than 7.0.Type: GrantFiled: October 16, 2000Date of Patent: April 2, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: John Jennings, Ted Deisenroth, Marlon Haniff
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Patent number: 6207837Abstract: Efficient synthesis of diaryl sulfide derivatives useful as intermediates for pharmaceutical compounds. Provision of a convenient process for producing large quantities of dibenzo[b,f]thiepine derivatives using such intermediates.Type: GrantFiled: January 18, 2000Date of Patent: March 27, 2001Assignee: Nippon Suisan Kaisha, Ltd.Inventors: Naomi Ohtsuka, Shuji Jinno, Takaaki Okita
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Patent number: 6153322Abstract: The present invention discloses fluorocarbon-containing surface modifying agents having an .omega.-fluorocarbon-containing tail group and a head group for reacting or interacting with surfaces such as metal, non-metallic, ceramic, other inorganic oxide or organic surfaces, cost effective method for making the agents, methods for treating surfaces therewith, the treated surfaces and devices made therefrom.Type: GrantFiled: March 11, 1998Date of Patent: November 28, 2000Inventors: T. Randall Lee, Nupur Garg, Michael Graupe, Young Seok Shon
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Patent number: 6057120Abstract: The invention concerns the use of redox-active compounds for the production of detection reagents for a method for the determination of an analyte as well as reagent kits that contain these redox-active compounds. In addition new redox-active compounds are disclosed.Type: GrantFiled: September 22, 1997Date of Patent: May 2, 2000Assignee: Roche Diagnostics GmbHInventors: Dieter Heindl, Rupert Herrmann, Joachim Hones, Hans-Peter Josel, Martina Junius-Comer, Hartmut Merdes, Axel Schmidt, Ernst Selbertinger
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Patent number: 6043360Abstract: The instant invention provides intermediates and processes for the preparation of compounds of formula IV ##STR1## wherein: n is 0, 1, or 2;R is hydrogen or C.sub.1 -C.sub.4 alkyl;X.sup.1 is hydrogen, cyano, 4-hydroxybenzoyl, 4-halobenzoyl, or 4-(C.sub.1 -C.sub.4 alkoxy)benzoyl;Y is NR.sup.4 R.sup.5, 4-hydroxyphenyl, or 4-(C.sub.1 -C.sub.4 alkoxy)phenyl;and R.sup.4 and R.sup.5 are independently hydrogen or C.sub.1 -C.sub.4 alkyl.Type: GrantFiled: April 29, 1998Date of Patent: March 28, 2000Assignee: Eli Lilly and CompanyInventors: Tony Yantao Zhang, John Paul Gardner
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Patent number: 5919983Abstract: A catalyst activator, comprising a cation which is a Bronsted acid capable of donating a proton, and an inert, compatible, noncoordinating, anion, characterized by a solubility constant at 25.degree. C. in hexane, cyclohexane or methylcyclohexane of at least 5 weight percent.Type: GrantFiled: March 14, 1997Date of Patent: July 6, 1999Assignee: The Dow Chemical CompanyInventors: Robert K. Rosen, Daniel D. VanderLende
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Patent number: 5798396Abstract: The present invention is directed to sulfonium salt-containing compounds represented by a following general formula; ##STR1## wherein R.sub.1 is alkyl containing from 1 to 18 carbon atoms, hydroxy, alkoxy containing from 1 to 18 carbon atoms, alkylcarbonyloxy containing from 1 to 18 carbon atoms or halogen, n is any of 0, 1, 2 or 3, however, each of R.sub.1 may be different from the others when n is 2 or more, R.sub.2 is alkyl containing from 1 to 6 carbon atoms, R.sub.3 and R.sub.4 are each independently hydrogen or alkyl containing from 1 to 6 carbon atoms, R.sub.5 and R.sub.6 are each independently hydrogen, alkyl containing from 1 to 6 carbon atoms, hydroxy, alkoxy containing from 1 to 6 carbon atoms, alkylcarbonyloxy containing from 1 to 18 carbon atoms or aromatic carbonyloxy, and R.sub.7 is alkyl containing from 4 to 20 carbon atoms or a group represented by a following formula; ##STR2## wherein R.sub.Type: GrantFiled: September 4, 1996Date of Patent: August 25, 1998Assignee: Nippon Soda Co., Ltd.Inventors: Eiji Takahashi, Hiroo Muramoto
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Patent number: 5741935Abstract: A process for the preparation of organic pentafluorosulphur compounds which comprises reacting an organic disulphide in a substantially inert solvent with elemental fluorine.Type: GrantFiled: March 28, 1997Date of Patent: April 21, 1998Assignee: British Nuclear Fuels plcInventors: Roy D. Bowden, Martin P. Greenhall, John S. Moilliet, Julie Thomson
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Patent number: 5705165Abstract: The present invention concerns the use in a cosmetic composition of a hydrofluorocarbon compound with formula (I):R.sub.F --(CH.sub.2).sub.n --X--?C.sub.3 H.sub.5 (OH)!--Y--R.sub.H(I)whereC.sub.3 H.sub.5 (OH) represents the structures: ##STR1## R.sub.F represents a perfluorinated C.sub.4 -C.sub.20 alkyl radical or a mixture of perfluorinated C.sub.4 -C.sub.20 alkyl radicals;R.sub.H represents a linear or branched C.sub.1 -C.sub.22 alkyl radical or a mixture of linear or branched C.sub.1 -C.sub.22 alkyl radicals, an aryl radical or an aralkyl radical;n is between 0 and 4;X and Y represent ##STR2## It also concerns certain sulfoxide and sulfone compounds and cosmetic compositions including the compounds of the invention.Type: GrantFiled: March 21, 1995Date of Patent: January 6, 1998Assignee: L'OrealInventors: Eric Bollens, Claude Mahieu
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Patent number: 5705702Abstract: By reacting an aryl Grignard reagent of the following general formula (1) with thionyl chloride and then reacting the reaction product with a triorganosilyl sulfonate or triorganohalide of the general formula (2): (R.sup.6).sub.3 SiY wherein R.sup.6, which may be the same or different, is a monovalent hydrocarbon group and Y is a substituted or unsubstituted alkylsulfonate or arylsulfonate or halogen atom, there is prepared a triarylsulfonium salt of the following general formula (3). ##STR1## In the formulae, each of R.sup.1 to R.sup.5, which may be the same or different, is a hydrogen atom or a monovalent organic group, especially alkyl, aryl, alkoxy, aryloxy, dialkylamino, dialkylaminoalkyl, alkylthio or arylthio group and X is a bromine or chlorine atom.Type: GrantFiled: September 12, 1996Date of Patent: January 6, 1998Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yoichi Osawa, Satoshi Watanabe, Junji Shimada, Toshinobu Ishihara
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Patent number: 5668192Abstract: Novel onium borates of an element of Groups 15 to 17 of the Periodic Table, or borates of an organometallic complex of an element of Groups 4 to 10 of the Periodic Table, well suited for the photochemical/electron beam cationic initiation of polymerization/crosslinking, the anionic borate moiety of which having the formula:[BX.sub.a R.sub.b ].sup.-in which a and b are integers ranging from 0 to 4 and a+b=4; the symbols X are each a halogen atom when a ranges up to 3 and an OH functional group when a ranges up to 2; and the symbols R, which may be identical or different, are each a phenyl radical substituted by at least one element or electron-withdrawing substituent or by at least two halogen atoms, or an aryl radical containing at least two aromatic ring members, or such aryl radical bearing at least one electron-withdrawing substituent.Type: GrantFiled: April 18, 1996Date of Patent: September 16, 1997Assignee: Rhone-Poulenc ChimieInventors: Frederic Castellanos, Jacques Cavezzan, Jean-Pierre Fouassier, Christian Priou
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Patent number: 5502083Abstract: The composition of the present invention is excellent in compatibility, transparency and curability and give a cured coat of excellent gloss and of less smell, and cured products of excellent properties can be obtained by curing the composition.The present invention relates to an onium salt represented by the following formula (1): ##STR1## wherein Ar is a mono- to tetra-valent aromatic group, X is a bisphenylsulfonio group which may have a substituent, a is 1-4, b is 0 or 1-3, a+b is 1-4, n is 1-4, and Z is a halide represented by the following formula (3):MQ.sub.m (OH).sub.l (3)where M is a boron atom, a phosphorus atom, an arsenic atom or an antimony atom, Q is a halogen atom, m is 3-6, l is 0 or 1, and m+l is 4-6; a photopolymerization initiator containing the onium salt as an active ingredient; an energy ray-curable composition containing the initiator; and a cured product.Type: GrantFiled: June 8, 1994Date of Patent: March 26, 1996Assignee: Nippon Kayaku Kabushiki KaishaInventors: Tetsuya Abe, Kazuhiko Ishii, Minoru Yokoshima
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Patent number: 5470994Abstract: Sulfonium and oxysulfonium salts, useful as photoinitiators, have directly attached to the sulfur atom thereof:at least one aromatic or heterocyclic aromatic substituent containing at least 14 aromatic atoms and having a removable positive hydrogen ion, said substituent exhibiting a higher energy occupied molecular orbital than at least one other substituent directly attached to said sulfur atom;and at least one substituent comprising an electron withdrawing group and exhibiting a lower energy unoccupied molecular orbital than at least one other substituent directly attached to said sulfur atom;said salt being capable, upon exposure to visible radiation, of undergoing irreversible intramolecular rearrangement to form a Bronsted acid comprising the anion of said salt and said removable positive hydrogen ion.Type: GrantFiled: April 5, 1990Date of Patent: November 28, 1995Assignee: Eastman Kodak CompanyInventors: Franklin D. Saeva, David T. Breslin
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Patent number: 5468902Abstract: Novel onium borates of an element of Groups 15 to 17 of the Periodic Table, or borates of an organometallic complex of an element of Groups 4 to 10 of the Periodic Table, well suited for the photochemical/electron beam cationic initiation of polymerization/crosslinking, the anionic borate moiety of which having the formula:[BX.sub.a R.sub.b ].sup.-in which a and b are integers ranging from 0 to 4 and a+b=4; the symbols X are each a halogen atom when a ranges up to 3 and an OH functional group when a ranges up to 2; and the symbols R, which may be identical or different, are each a phenyl radical substituted by at least one element or electron-withdrawing substituent or by at least two halogen atoms, or an aryl radical containing at least two aromatic ring members, or such aryl radical bearing at least one electron-withdrawing substituent.Type: GrantFiled: March 23, 1993Date of Patent: November 21, 1995Assignee: Rhone-Poulenc ChimieInventors: Frederic Castellanos, Jacques Cavezzan, Jean-Pierre Fouassier, Christian Priou
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Patent number: 5453220Abstract: Calixarene-based, noncentrosymmetric transition metal complexes that exhibit large second order nonlinear optical and related electro-optical properties are provided, as are materials and devices comprising the same.Type: GrantFiled: January 29, 1993Date of Patent: September 26, 1995Assignee: The Trustees of the University of PennsylvaniaInventors: Timothy M. Swager, Bing Xu
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Patent number: 5393764Abstract: The compounds of the present invention comprise substituted phenolic thioethers represented by the formula ##STR1## wherein: R.sup.1 and R.sup.2 are the same or different and independently represent tert-alkyl or phenyl; R.sup.3 represents hydrogen or alkyl; X represents --(CH.sub.2).sub.w --B--(CH.sub.2).sub.y -- wherein B represents O, S, or CH.sub.2 and w and y can each independently be an integer from 0 to 3 with the proviso that the sum of w+y is equal to or less than 3; A represents O or S(O).sub.n wherein n is 0, 1 or 2; p is an integer from 1 to 4; and R represents alkyl; OH; OR.sup.4 wherein R.sup.4 is alkyl of 1 to 4 carbon atoms; NR.sup.5 R.sup.6 wherein R.sup.5 is hydrogen or alkyl and R.sup.6 is hydrogen, alkyl, heterocyclealkyl in which the hetercyclic ring may optionally be substituted; cycloalkyl; substituted cycloalkyl; phenyl; substituted phenyl; phenylalkyl; or substituted phenylalkyl; or NR.sup.5 R.sup.6 together form a heterocyclic ring which may optionally be substituted; or R is (CH.Type: GrantFiled: August 25, 1993Date of Patent: February 28, 1995Assignee: G. D. Searle & Co.Inventors: Richard A. Mueller, Richard A. Partis
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Patent number: 5350878Abstract: This invention provides 1) novel reactive fluorinated compounds derived from a specified class of telomers or cotelomers of fluoroolefins; and 2) stable products and stable polymers thereof obtained by reaction or polycondensation of the novel reactive fluorinated compounds with specified classes of hydrogenated aliphatic, alicyclic, aromatic reactive compounds, telechelic oligomers and block polymers wherein said stable products and polymers contain hetero atoms such as oxygen, sulfur or nitrogen and are characterized by high thermal and chemical resistance.Type: GrantFiled: February 10, 1993Date of Patent: September 27, 1994Assignee: Dow Corning CorporationInventor: Gerardo Caporiccio
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Patent number: 5279764Abstract: The invention relates to dihalogenobenzene derivatives of the formula IR.sup.1 --A.sup.1 --Z.sup.1 --A.sup.2 --(Z.sup.2 --A.sup.3).sub.n --R.sup.2wherein R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, Z.sup.1, Z.sup.2 and n are as defined in the specification.Type: GrantFiled: November 23, 1992Date of Patent: January 18, 1994Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Volker Reiffenrath, Joachim Krause, Georg Weber, Ulrich Finkenzeller, Andreas Wachtler, Thomas Geelhaar, David Coates, Ian C. Sage, Simon Greenfield
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Patent number: 5276205Abstract: Novel insecticides have the formula ##STR1## in which R.sub.1 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 haloalkylthio, C.sub.2 -C.sub.5 carboalkoxy, C.sub.2 -C.sub.5 alkylcarbonyl, nitro or cyano;R.sub.2 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 haloalkylthio, C.sub.3 haloalkenoxy, nitro, cyano, C.sub.2 -C.sub.5 alkylcarbonyl, C.sub.1 -C.sub.4 alkylsulfonyl or C.sub.2 -C.sub.5 carboalkoxy;R.sub.3 is hydrogen, halogen, C.sub.1 -C.sub.4 haloalkyl or C.sub.1 -C.sub.4 alkoxy;provided that:R.sub.1, R.sub.2 and R.sub.3 are not all hydrogen; orR.sub.1 and R.sub.2 taken together are C.sub.2 -C.sub.4 alkylene, C.sub.2 -C.sub.4 alkyleneoxy, C.sub.1 -C.sub.2 perhaloalkyleneoxy, C.sub.1 -C.sub.4 alkylenedioxy or halo-C.sub.1 -C.sub.3 alkylenedioxy;R.sub.Type: GrantFiled: May 11, 1989Date of Patent: January 4, 1994Assignee: ICI Americas Inc.Inventor: Karl J. Fisher
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Patent number: 5117055Abstract: A perfluoroalkyl halogenide represented by the formula: ##STR1## wherein X stands for one element selected from the group consisting of iodine and bromine, R.sub.f for a perfluorohydrocarbon group, n for an integer in the range of 1 to 3, and m for an integer in the range of 1 to 3, provided that n and m satisfy the relationship, n.gtoreq.m, is produced by a method which consists essentially in subjecting a perfluorocarboxylic acid fluoride represented by the formula, ##STR2## wherein R.sub.f and n have the same meanings as defined above, to a thermal reaction with a lithium halogenide represented by XI, wherein X has the same meaning as defined above.Type: GrantFiled: February 22, 1990Date of Patent: May 26, 1992Assignees: Agency of Industrial Science and Technology, Ministry of International Trade & IndustryInventors: Takashi Abe, Eiji Hayashi, Haruhiko Fukaya
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Patent number: 5055223Abstract: Aryl-sulfur pentafluorides of the formula I ##STR1## wherein R, A, Z, n, m and X.degree. have the meaning indicated in claim 1 are suitable for use as components of liquid-crystal phases for field-effect and/or bi-stability effect displays.Type: GrantFiled: December 27, 1989Date of Patent: October 8, 1991Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Volker Reiffenrath, Rudolf Eidenschink, Georg Weber
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Patent number: 5045229Abstract: Difluoromethylene compounds of the formula IR.sup.1 --(A.sup.1 --Z.sup.1).sub.m --A.sup.2 --Q--CF.sub.2 --(A.sup.3 --Z.sup.2).sub.n --A.sup.4 --R.sup.2 Iin which R.sup.1, R.sup.2, A.sup.1, A.sup.2, A.sup.3, A.sup.4, Z.sup.1, Z.sup.2, m and n are as defined herein and Q is --CO--, --O-- or --S--, can be used as components of liquid-crystalline media for liquid-crystal and electrooptical display elements.Type: GrantFiled: March 16, 1990Date of Patent: September 3, 1991Assignee: Merck Patent Gesellschaft mit beschrankter HaftungInventors: Ekkehard Bartmann, Reinhard Hittich, Hans-Adolf Kurmeier, Eike Poetsch, Herbert Plach
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Patent number: 4621160Abstract: A process for the chlorination of aromatic derivatives. The aromatic derivative is reacted with chlorine gas in liquid hydrofluoric acid. The products obtained are useful as intermediates for the synthesis of compounds having a plant-protecting or pharmaceutical activity.Type: GrantFiled: June 22, 1984Date of Patent: November 4, 1986Assignee: Rhone-Poulenc Specialites ChimiquesInventors: Michel Desbois, Camille Disdier
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Patent number: 4575571Abstract: A process for the stimulaneous halogenation and fluorination of aromatic derivatives substituted by at least one group containing a halogenoalkyl unit. The aromatic derivative is reacted with the halogen in liquid hydrofluoric acid. The products obtained are useful as intermediates for the synthesis of compounds having a plant-protecting or pharmaceutical activity.Type: GrantFiled: June 22, 1984Date of Patent: March 11, 1986Assignee: Rhone-Poulenc Specialites ChimiquesInventors: Michel Desbois, Camille Disdier
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Patent number: 4428889Abstract: Novel p-alkoxyphenylthionophosphine sulfide dimers useful for preparing thiopeptides from peptides.Type: GrantFiled: May 14, 1981Date of Patent: January 31, 1984Assignee: Bristol-Myers CompanyInventors: Bernard R. Belleau, Carlo Franchini
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Patent number: 4283566Abstract: An improved process for obtaining halogenated diphenols which can be pure dihalodiphenols or predetermined, statistical mixtures comprising unreacted diphenol, monohalodiphenols and dihalodiphenols.Type: GrantFiled: January 21, 1980Date of Patent: August 11, 1981Assignee: General Electric CompanyInventor: Victor Mark
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Patent number: 4251521Abstract: Alkyl diaryl sulfonium salts, e.g., cyclopropyl diphenylsulfonium tetrafluoroborate, are useful as hypoglycemic agents.Type: GrantFiled: February 7, 1979Date of Patent: February 17, 1981Assignee: Sandoz, Inc.Inventor: Faizulla G. Kathawala
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Patent number: 4246259Abstract: Higher alkyl diaryl sulfonium salts, e.g., octadecyldiphenylsulfonium tetrafluoroborate, are useful as anti-obesity agents.Type: GrantFiled: February 7, 1979Date of Patent: January 20, 1981Assignee: Sandoz, Inc.Inventor: Faizulla G. Kathawala
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Patent number: 4210765Abstract: An improved process for obtaining halogenated diphenols which can be pure dihalodiphenols or predetermined, statistical mixtures comprising unreacted diphenol, monohalodiphenols and dihalodiphenols.Type: GrantFiled: February 28, 1978Date of Patent: July 1, 1980Assignee: General Electric CompanyInventor: Victor Mark