Esters Having The -x-c(=x)x- Group, Wherein The X's Are The Same Or Diverse Chalcogens And At Least One X Is Sulfur, And Wherein One Of The Single Bonded X's Is Bonded Directly To Carbon, Which Carbon May Be Single Bonded To Any Atom, But May Be Multiple Bonded Only To Carbon (e.g., Thiocarbonates, Etc.) Patents (Class 558/243)
  • Publication number: 20140303391
    Abstract: Monomers having a C-B-A-B-C structure are disclosed, where A is a core of either trithiocarbonate and allyl sulfide, where B are linker units, and where C are end units. The end units may comprise acrylates, methacrylates, alcohol(s), amine(s), and alkynes, among others. The linker units may include an alkane, alkene, phenyl, diphenyl, or benzylic group, among others. Methods of synthesizing such compounds are also disclosed.
    Type: Application
    Filed: April 7, 2014
    Publication date: October 9, 2014
    Inventors: Christopher R. Fenoli, Christopher N. Bowman
  • Patent number: 8791286
    Abstract: The present invention provides a low cost technique for synthesizing substituted trithiocarbonates and derivates thereof, by a one-step process which does not require solvent washes or re-crystallization steps, and results in practical yields more than double that of processes disclosed in the prior art.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: July 29, 2014
    Assignee: The Lubrizol Corporation
    Inventors: Richard Yodice, John R. Johnson, Ross L. Beebe, Anthony J. Brzytwa, Christopher D. Hilker
  • Patent number: 8492576
    Abstract: Carboxylate terminated thiocarbonates are reacted with a polyfunctional alcohol to form a hydroxyl-terminated thiocarbonate compound.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: July 23, 2013
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Ronald P. Shea
  • Patent number: 8470750
    Abstract: The invention relates to novel sulphur compounds, to the production thereof by a method carried out in an aqueous medium and the use thereof in the form of transfer agents in a method for controlled radical polymerization of acrylic acid and/or acrylic acid with water-soluble monomers in water. The thus obtained polymers are usable in the form of dispersing agents or grinding aid agents and/or aid agents for combined grinding of mineral materials in an aqueous suspension and in the form of dispersing agents directly incorporated into aqueous formulations containing mineral materials.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: June 25, 2013
    Assignee: Coatex S.A.S
    Inventors: Jean-Marc Suau, Christian Jacquemet
  • Patent number: 8227633
    Abstract: The invention relates to novel sulphur compounds, to the production thereof by a method carried out in an aqueous medium and the use thereof in the form of transfer agents in a method for controlled radical polymerization of acrylic acid and/or acrylic acid with water-soluble monomers in water. The thus obtained polymers are usable in the form of dispersing agents or grinding aid agents and/or aid agents for combined grinding of mineral materials in an aqueous suspension and in the form of dispersing agents directly incorporated into aqueous formulations containing mineral materials.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: July 24, 2012
    Assignee: Coatex S.A.S.
    Inventors: Jean-Marc Suau, Christian Jacquemet
  • Patent number: 8123982
    Abstract: Alternative inhibitors that offer an improvement over tolyltriazole in inhibiting yellow metal corrosion. The dithiocarbamate compounds and their salts were compared to that of tolyltriazole under identical conditions. These comparative tests were conducted in common corrosion testing systems, using both electrochemical corrosion cells and pilot cooling rigs, using various water conditions. The test methods included electrochemical studies such as linear polarization resistance, open circuit potential versus time, Tafel and cyclic polarization.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: February 28, 2012
    Assignee: Akzo Nobel N.V.
    Inventors: Eric C. Ward, Alvie L. Foster, Jr., Michael L. Standish, Ivonne C. Weidner
  • Publication number: 20110186773
    Abstract: The invention relates to novel sulphur compounds, to the production thereof by a method carried out in an aqueous medium and the use thereof in the form of transfer agents in a method for controlled radical polymerisation of acrylic acid and/or acrylic acid with water-soluble monomers in water. The thus obtained polymers are usable in the form of dispersing agents or grinding aid agents and/or aid agents for combined grinding of mineral materials in an aqueous suspension and in the form of dispersing agents directly incorporated into aqueous formulations containing mineral materials.
    Type: Application
    Filed: April 12, 2011
    Publication date: August 4, 2011
    Applicant: COATEX S.A.S.
    Inventors: Jean-Marc SUAU, Christian JACQUEMET
  • Patent number: 7956211
    Abstract: The invention relates to novel sulphur compounds, to the production thereof by a method carried out in an aqueous medium and the use thereof in the form of transfer agents in a method for controlled radical polymerization of acrylic acid and/or acrylic acid with water-soluble monomers in water. The thus obtained polymers are usable in the form of dispersing agents or grinding aid agents and/or aid agents for combined grinding of mineral materials in an aqueous suspension and in the form of dispersing agents directly incorporated into aqueous formulations containing mineral materials.
    Type: Grant
    Filed: March 23, 2005
    Date of Patent: June 7, 2011
    Assignee: Coatex S.A.S.
    Inventors: Jean-Marc Suau, Christian Jacquemet
  • Publication number: 20100261927
    Abstract: The present invention provides a low cost technique for synthesizing substituted trithiocarbonates and derivates thereof, by a one-step process which does not require solvent washes or re-crystallization steps, and results in practical yields more than double that of processes disclosed in the prior art.
    Type: Application
    Filed: August 4, 2008
    Publication date: October 14, 2010
    Applicant: The Lubrizol Corproation
    Inventors: Richard Yodice, John J. Johnson, Ross L. Beebe, Anthony J. Brzytwa, Chrístopher D. Hiiker
  • Publication number: 20100227975
    Abstract: The invention provides a method for preparing an aqueous dispersion of polymer particles comprising the following steps: (i) preparing a dispersion having a continuous aqueous phase, a dispersed organic phase comprising one or more ethylenically unsaturated monomers, and an amphiphilic RAFT agent as a stabiliser for said organic phase, and (ii) polymerising said one or more ethylenically unsaturated monomers under the control of said amphiphilic RAFT agent to form said aqueous dispersion of polymer particles, novel amphiphilic RAFT agents for use in this method, novel RAFT agents useful in making these amphiphilic RAFT agents and methods for their manufacture.
    Type: Application
    Filed: May 14, 2010
    Publication date: September 9, 2010
    Applicant: UNIVERSITY OF SYDNEY
    Inventors: Christopher Henry SUCH, Ezio RIZZARDO, Algirdas Kazimieras SERELIS, Brian Stanley HAWKETT, Robert Goulston GILBERT, Christopher James FERGUSON, Robert John HUGHES, Edna Olejnik
  • Patent number: 7759513
    Abstract: The present invention discloses novel and improved nucleosidic and nucleotidic compounds that are useful in the light-directed synthesis of oligonucleotides, as well as, methods and reagents for their preparation. These compounds are characterized by novel photolabile protective groups that are attached to either the 5?- or the 3?-hydroxyl group of a nucleoside moiety. The photolabile protective group is comprised of a 2-(2-nitrophenyl)-ethyoxycarbonyl skeleton with at least one substituent on the aromatic ring that is either an aryl, an aroyl, a heteroaryl or an alkoxycarbonyl group. The present invention includes the use of the aforementioned compounds in light-directed oligonucleotide synthesis, the respective assembly of nucleic acid microarrays and their application.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: July 20, 2010
    Assignee: NIGU Chemie GmbH
    Inventors: Sigrid Bühler, Markus Ott, Wolfgang Pfleiderer
  • Patent number: 7659345
    Abstract: A s,s?-bis-(?,??-disubstituted-??-acetic acid)-trithiocarbonate and derivatives thereof can be used as an initiator, chain transfer agent, or terminator for polymerization of monomers such as free radical polymerizable monomers. Homopolymers, copolymers, and the like as well as block copolymers can be made utilizing the trithio carbonate compound such as in a living free radical polymerization as well as to form telechelic polymers.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: February 9, 2010
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventor: John Ta-Yuan Lai
  • Publication number: 20090312496
    Abstract: Carboxylate terminated thiocarbonates are reacted with a polyfunctional alcohol to form a hydroxyl-terminated thiocarbonate compound.
    Type: Application
    Filed: June 4, 2009
    Publication date: December 17, 2009
    Inventors: John Ta-Yuan Lai, Ronald P. Shea
  • Patent number: 7632966
    Abstract: This invention provides an efficient method for synthesizing trithiocarbonate RAFT agents, RSC(S)SR?, that can be used in the living polymerization of methacrylates and other olefinic monomers. This invention also provides an efficient method of synthesizing bis(alkylsulfanylthiocarbonyl) disulfides that are useful as intermediates in the synthesis of trithiocarbonate RAFT agents.
    Type: Grant
    Filed: May 11, 2005
    Date of Patent: December 15, 2009
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: William Brown Farnham
  • Patent number: 7557235
    Abstract: Carboxylate terminated thiocarbonates are reacted with a polyfunctional alcohol to form a hydroxyl-terminated thiocarbonate compound.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: July 7, 2009
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Ronald P. Shea
  • Patent number: 7495050
    Abstract: Thiocarbonate compounds which, in one embodiment, are utilized as a rheology modifier or associative thickener. The thiocarbonate compounds thicken or increase the viscosity of a composition, preferably an aqueous composition when used in an effective amount. In one preferred embodiment, the thiocarbonate compounds include at least one hydrophilic group containing repeat unit such as derived from acrylic acid, and at least one hydrophobic group to enhance association with other compounds and thus increase viscosity of a composition. Aqueous composition comprising a latex and thiocarbonate associative thickeners are described.
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: February 24, 2009
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Shui-Jen Raymond Hsu
  • Patent number: 7402690
    Abstract: Polymers and copolymers synthesized by means that yield a narrow range of molecular weights can have different properties than polymers synthesized by conventional means. In order to obtain such polymers, however, polymerization must be controlled. One type of controlled polymerization is the reversible addition-fragmentation chain transfer (RAFT) process, which has characteristics of a living polymerization. The present invention discloses a group of dithioesters and trithioesters suitable as chain transfer agents for RAFT polymerization. The present invention also discloses RAFT polymerizations conducted in aqueous media.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: July 22, 2008
    Assignee: University of Southern Mississippi
    Inventors: Charles L. McCormick, Michael S. Donovan, Andrew B. Lowe, Brent S. Sumerlin, David B. Thomas
  • Publication number: 20070149741
    Abstract: The present invention is directed to a free radical control agent of the structural formula: wherein R1 is a divalent alkyl group of 1 to 12 carbon atoms, R2 and R3 are each independently hydrogen or an alkyl group of 1 to 12 carbon atoms, and R4 is —OH or —COOH, with the proviso that the total carbon atoms of R1, R2, and R3 is no greater than 12; and wherein Y represents a functional group that is capable of activating a vinylic carbon toward free radical addition.
    Type: Application
    Filed: October 19, 2006
    Publication date: June 28, 2007
    Inventor: Dane Kenton Parker
  • Patent number: 7230063
    Abstract: The present invention is directed to a free radical control agent of the structural formula: wherein R1 is a divalent alkyl group of 1 to 12 carbon atoms, R2 and R3 are each independently hydrogen or an alkyl group of 1 to 12 carbon atoms, and R4 is —OH or —COOH, with the proviso that the total carbon atoms of R1, R2, and R3 is no greater than 12; and wherein Y represents a functional group that is capable of activating a vinylic carbon toward free radical addition.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: June 12, 2007
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Dane Kenton Parker
  • Patent number: 6894116
    Abstract: A toughener comprising a trithiocarbonate polymer having an epoxy end group is described which is utilized with various thermosettable polymers such as epoxy, polyurethane, and the like. A toughened composition is made by curing the thermosettable polymer and the toughener utilizing various curing agents.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: May 17, 2005
    Assignee: Noveon IP Holdings Corp.
    Inventors: John Ta-Yuan Lai, Carole Angele Lepilleur, Carl Duane Weber, David Richard Egan, Deborah Susan Filla
  • Patent number: 6596899
    Abstract: A s,s′-bis-(&agr;,&agr;′-disubstituted-&agr;″-acetic acid)-trithiocarbonatte and derivatives thereof can be used as an initiator, chain transfer agent, or terminator for polymerization of monomers such as free radical polymerizable monomers. Homopolymers, copolymers, and the like as well as block copolymers can be made utilizing the trithio carbonate compound such as in a living free radical polymerization as well as to form telechelic polymers.
    Type: Grant
    Filed: February 16, 2000
    Date of Patent: July 22, 2003
    Assignee: Noveon IP Holdings Corp.
    Inventor: John T. Lai
  • Patent number: 6562988
    Abstract: The present invention includes 16-HETE analogs which are agonists and antagonists of 16-HETE. The compositions may be formulated in pharmaceutically acceptable formulations. The invention also includes methods and products for inhibiting neutrophil adhesion and neutrophil aggregation using the 16-HETE agonists. One method of the invention involves the administration of a 16-HETE agonist in combination with a thrombolytic agent to a patient suffering from thromboembolic stroke.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: May 13, 2003
    Assignees: Univ. Vermont and State Agricultural College, Univ. of Texas System Board of Regents, New York Medical College
    Inventors: John R. Falck, Martin M. Bednar, Cordell E. Gross, Michael Balazy
  • Publication number: 20020151740
    Abstract: A method for making a vinyl carbonate represented by the formula (I):
    Type: Application
    Filed: May 29, 2002
    Publication date: October 17, 2002
    Inventors: David Lewis Allen, Heather Fort Henry, Becky Lynn Cahill, John Ponton, Kathryn Marie Church
  • Patent number: 6426365
    Abstract: The present invention provides a CETP activity inhibitor comprising as an active ingredient a compound represented by the formula (I): wherein R represents a straight chain or branched alkyl group; a straight chain or branched alkenyl group; a lower haloalkyl group; a substituted or unsubstituted cycloalkyl group; a substituted or unsubstituted cycloalkenyl group; a substituted or unsubstituted cycloalkylalkyl group; a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, X1, X2, X3, and X4 may be the same or different and each represents a hydrogen atom, a halogen atom, a lower alkyl group, a lower haloalkyl group; a lower alkoxy group; a cyano group; a nitro group; an acyl group; or an aryl group, Y represents —CO— or —SO2—, and Z represents a hydrogen atom or a mercapto-protecting group, or a prodrug compound, a pharmaceutically acceptable salt, or hydrate or solvate thereof.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: July 30, 2002
    Assignee: Japan Tobacco Inc.
    Inventors: Hisashi Shinkai, Kimiya Maeda, Hiroshi Okamoto
  • Patent number: 5977395
    Abstract: "Esters" are synthesized by reacting a nucleophile with a propargyl xanthate advantageously having the formula (I):R.sub.3 --C.tbd.C--CR.sub.1 R.sub.2 --S--CS--Y--R (I)in the presence of at least one acid, Bronsted or otherwise, and at a temperature ranging from 0.degree. to 300.degree. C.; the subject reaction is particularly applicable to a wide variety of chiral organic syntheses.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: November 2, 1999
    Assignee: Rhone-Poulenc Chimie
    Inventors: Jean Boivin, Eric B. Henriet, Samir Z. Zard
  • Patent number: 5663406
    Abstract: A carbonate ester is produced by the metal-induced reaction of a hydroxy compound with a sulfur compound in a melt process. An orthocarbonate can also be produced. The orthocarbonate can be converted into carbonate ester in a subsequent operation.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: September 2, 1997
    Assignee: General Electric Company
    Inventors: Joseph Anthony King, Jr., Robert Edgar Colborn, Deborah Ann Haitko, Jimmy Lynn Webb
  • Patent number: 5476944
    Abstract: The present invention relates to derivatives of cyclic phenolic thioethers of the formula: ##STR1## and the pharmaceutically acceptable salts thereof, which are inhibitors or stimulators of superoxide generation, and which may also inhibit cyclooxygenase and/or 5-lipoxygenase, to pharmaceutical compositions containing one or more of these compounds in combination with a pharmaceutically-acceptable carrier, and to medical methods of treatment employing these compounds.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: December 19, 1995
    Assignee: G. D. Searle & Co.
    Inventors: Richard A. Partis, Richard A. Mueller, Francis J. Koszyk, Richard M. Weier
  • Patent number: 5468870
    Abstract: Dye-donor element for use according to thermal dye sublimation transfer comprising a support having thereon a dye layer containing a dye corresponding to the following formula ##STR1## wherein Z represents CN, COOR.sup.1 or CONR.sup.2 R.sup.3 ;R.sup.1, R.sup.2 and R.sup.3 each independently represent hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, or R.sup.2 and R.sup.3 together represent the necessary atoms to close a heterocyclic nucleus or substituted heterocyclic nucleus;Y represents OR.sup.4 or NR.sup.5 R.sup.6 or CN;R.sup.4 represents hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aryl, SO.sub.2 R.sup.7, COR.sup.7, CSR.sup.7, POR.sup.7 R.sup.8 ;R.sup.5 and R.sup.6 each independently has one of the significances given to R.sup.4 or represent substituted or unsubstituted amino, or R.sup.5 and R.sup.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: November 21, 1995
    Assignee: AGFA-GAVAERT, N.V.
    Inventor: Luc J. Vanmaele
  • Patent number: 5455373
    Abstract: A method of producing perfluorocarbon halides in a one-pot reaction is described. The method employs a perfluorocarbon acid, a first halogenating agent and a second halogen which drives the reaction forward. Novel perfluorocarbon halides and a direct method for producing perfluorocarbon hypohalites also are described.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: October 3, 1995
    Assignee: Exfluor Research Corporation
    Inventor: Hajimu Kawa
  • Patent number: 5359003
    Abstract: Polysulfide derivatives, having the general formula (A--S--S--).sub.2 X--S--S--A processes for their production and their use for crosslinking of reversion-stable rubber vulcanizates are provided. Crosslinking with reduced reversion and loss of elastomeric properties with age is achieved by the crosslinking system provided by the invention.
    Type: Grant
    Filed: August 11, 1993
    Date of Patent: October 25, 1994
    Assignee: Huls Aktiengesellschaft
    Inventors: Gerhard Horpel, Karl-Heinz Nordsiek
  • Patent number: 5173306
    Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: December 22, 1992
    Assignee: Union Oil Company of California
    Inventors: James A. Green, II, Donald C. Young
  • Patent number: 5041611
    Abstract: Organic compounds having aromatic ester, thioester, or carbonate groups are prepared by reacting an organometallic reactant where the metal is germanium, tin, lead, gallium, indium, thallium, arsenic, antimony, or bismuth with a suitable second reactant. For example, the ester ##STR1## is prepared by reacting the bis-tri--n-butyl tin derivative of ethyl 4-hydroxybenzoate with 4-phenoxybenzoyl chloride.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: August 20, 1991
    Assignee: Raychem Limited
    Inventor: Ian D. H. Towle
  • Patent number: 5041240
    Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: August 20, 1991
    Assignee: Union Oil Company of California
    Inventors: James A. Green, II, Donald C. Young
  • Patent number: 4879314
    Abstract: Dihaloformaldoximes of the formula: ##STR1## wherein R, X, X.sup.1 and Y are as defined herein having biocidal, fungicidal and pesticidal activity are disclosed.
    Type: Grant
    Filed: January 8, 1986
    Date of Patent: November 7, 1989
    Inventor: Adam C. Hsu
  • Patent number: 4868322
    Abstract: A new process is described for the preparation of trithiocarbonic acid esters of formula: ##STR1## in which R and R.sub.1, which can be the same or different, are aliphatic, alicyclic, aromatic or heterocyclic radicals. The new process is characterized in that an organic hydrosulphide and a base, or an inorganic sulphide, are reacted with carbon disulphide and an organic halide in stoichiometric proportions in the absence of organic solvents, in the presence of an aqueous phase and a phase transfer catalyst.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: September 19, 1989
    Assignee: Consiglio Nazionale Delle Ricerche
    Inventors: Iacopo Degani, Rita Fochi, Valeria Regondi
  • Patent number: 4748186
    Abstract: S-trifluorobutenyl thiocarbonic acid esters of the formula ##STR1## and salts thereof, wherein X is R.sup.1 N or S and Y is RS or R.sup.3 R.sup.2 N;wherein R is a metal or a radical selected from alkyl, cycloalkylalkyl, halocycloalkylalkyl, alkenyl, haloalkyl, haloalkenyl, alkynyl, alkoxyalkyl, alkylthioalkyl, alkoxycarbonylalkyl, halophenoxyalkyl, trialkylsilylalkyl, (vinyl)dialkylsilylalkyl, (allyl)dialkylsilylalkyl, 2-chlorothiophene-5-ylmethyl, phenylalkyl, halophenylalkyl, nitrophenylalkyl, haloalkylphenylalkyl, dialkyl-2,3-dihydrobenzofuran-7-yl, [2-methyl-(1,1'-biphenyl)-3-yl]methyl, 3-phenoxybenzyl, phenylthioalkyl, halophenylthioalkyl, dialkylphosphoryl, dialkylthiophosphoryl, dialkylisoxazolylalkyl and thienylisoxazolylalkyl;wherein R.sup.1 is alkyl, cycloalkyl, cyano, dialkyl-2,3-dihydrobenzofuran-7-yl, halophenyl, halophenylalkyl, haloalkoxyphenyl, pyridinyl, halopyridinyl, alkyl-1,3,4-thiadiazolyl, haloalkyl-1,3,4-thiadiazolyl, benzothiazolyl, dialkyloxazolyl or thiazolinyl;wherein R.sup.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: May 31, 1988
    Assignee: FMC Corporation
    Inventors: Thomas G. Cullen, Anthony J. Martinez, Jacob J. Vukich
  • Patent number: 4715882
    Abstract: The invention relates to certain substituted phenoxypropionaldehyde derivatives, formulations of said derivatives and the use thereof for preemergence or postemergence control of noxious plants, i.e., weeds.
    Type: Grant
    Filed: October 15, 1986
    Date of Patent: December 29, 1987
    Assignee: PPG Industries, Inc.
    Inventor: Muppala S. Raju
  • Patent number: 4711967
    Abstract: An S-aryl S-alkyl dithiocarbonate is prepared by pyroltically isomerizing an O-aryl S-alkyl dithiocarbonate at a temperature in the range 150.degree.-600.degree. C. The reaction product may be hydrolyzed to form an arenethiol or may be further reacted with an alcohol in the presence of a basic catalyst to form an aryl thioether.
    Type: Grant
    Filed: April 28, 1986
    Date of Patent: December 8, 1987
    Assignee: Courtaulds PLC
    Inventor: Peter G. Urben
  • Patent number: 4686033
    Abstract: The efficiency of metals separation using ore flotation is improved by the use of certain substituted hydrocarbylene trithiocarbonates as suppressants for undesired metals.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: August 11, 1987
    Assignee: Phillips Petroleum Company
    Inventors: Clarence R. Bresson, Robert M. Parlman, James B. Kimble
  • Patent number: 4677218
    Abstract: A process for the preparation of racemic or optically active isomers of alkyl esters of cis chrysanthemic of the formula ##STR1## wherein R is alkyl of 1 to 6 carbon atoms comprising reacting a racemic or optically active cis compound of the formula ##STR2## wherein R has the above definition with an aryl halothioformate of the formula ##STR3## wherein Hal is a halogen and Ar is aryl of 6 to 12 carbon atoms optionally substituted with at least one alkyl of 1 to 3 carbon atoms to obtain a compound of the formula ##STR4## of cis configuration and heating the latter optionally in an organic solvent to obtain the compound of formula I and novel intermediates.
    Type: Grant
    Filed: July 16, 1985
    Date of Patent: June 30, 1987
    Assignee: Roussel Uclaf
    Inventors: Michel Frank-Neumann, Madjid Sedrati, Jean-Pierre Vigneron, Vincente Bloy
  • Patent number: 4661515
    Abstract: Novel compounds possessing both angiotensin enzyme inhibitory activity and diuretic activity are disclosed. The compounds are represented by the general formula ##STR1## in which X is ##STR2## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are hydrogen, alkyl, alkenyl, alkynyl, phenyl-alkyl, and cycloalkyl, and may be the same or different; n is an integer from 0 to 4 inclusive; M is alkenyl, alkynyl, cycloalkyl, cycloalkyl-alkyl, polycycloalkyl, polycycloalkyl-alkyl, aryl, aralkyl, heteroaryl, heteroaryl-alkyl, hetero-cyloalkyl, hetero-cycloalkyl-alkyl, fused aryl-cycloalkyl, fused aryl-cycloalkyl-alkyl, fused heteroaryl-cycloalkyl, fused heteroaryl-cycloalkyl-alkyl, alkoxyalkyl, alkylthioalkyl, alkylamino-alkyl, or dialkylaminoalkyl, or M and R.sub.6 taken together with the nitrogen to which M is bonded and the carbon to which R.sub.
    Type: Grant
    Filed: January 17, 1986
    Date of Patent: April 28, 1987
    Assignee: USV Pharmaceutical Corporation
    Inventors: Edward S. Neiss, John T. Suh, John J. Piwinski
  • Patent number: 4650568
    Abstract: Polyhydroxytrithiocarbonates can be used as depressants in ore flotation.
    Type: Grant
    Filed: March 22, 1985
    Date of Patent: March 17, 1987
    Assignee: Phillips Petroleum Company
    Inventors: Kenneth B. Kimble, Clarence R. Bresson, Harold W. Mark
  • Patent number: 4640789
    Abstract: Ammonium dialkylaminoalkyl (thiocarbonyldithio) alkanoates, alkali metal dialkylaminoalkyl (thiocarbonyldithio) alkanoates, their use as flotation agents, and a process for the production of these novel compositions are disclosed. N,N-dialkylaminoalkyl mercaptoalkanoate, its use as an intermediate in the production of the novel ammonium dialkylaminoalkyl (thiocarbonyldithio) alkanoates and alkali metal dialkylaminoalkyl (thiocarbonyldithio) alkanoates, and a process for the production of this novel composition are also disclosed.
    Type: Grant
    Filed: February 12, 1985
    Date of Patent: February 3, 1987
    Assignee: Phillips Petroleum Company
    Inventors: Clarence R. Bresson, Rector P. Louthan
  • Patent number: 4619760
    Abstract: Process for the preparation of ore flotation collectors is disclosed comprising reacting an alkali metal salt of a 2-mercaptobenzimidazole with carbon disulfide. Also disclosed is process for recovery of minerals by flotation employing the novel ore flotation collectors prepared as described above.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: October 28, 1986
    Assignee: Phillips Petroleum Company
    Inventors: Kenneth B. Kimble, Clarence R. Bresson, Harold W. Mark
  • Patent number: 4617416
    Abstract: There is disclosed a process for the preparation of thiocarbamates having the following general formula: ##STR1## wherein: R represents alkyl C.sub.1 -C.sub.4 optionally substituted with one or more halogen atoms, alkenyl C.sub.2 -C.sub.4 optionally substituted with one or more halogen atoms, phenyl optionally substituted with one or more halogen atoms, benzyl optionally substituted with one or more halogen atoms on the phenyl ring;R.sup.1 and R.sup.2, equal or different from one another, represent alkyl C.sub.1 -C.sub.4 or cycloalkyl;consisting in reacting organic dithiocarbonates with organic carbamoyl halides, in the presence of an aqueous solution of an inorganic base and a phase transfer catalyst, at a temperature of 10.degree. to 50.degree. C. for time periods of 5 to 10 hours.The thiocarbamates obtained are used as herbicides, fungicides, etc., and in general in various fields of "fine chemicals".
    Type: Grant
    Filed: March 19, 1985
    Date of Patent: October 14, 1986
    Assignee: Montedison S.p.A.
    Inventors: Renato Ugo, Stefano Campolmi, Vittorio Carletti