Patents Examined by M. C. Eakin
  • Patent number: 4377700
    Abstract: A process for the preparation of N-(cyclohexylthio)-phthalimide by the reaction of phthalimide with cyclohexylsulphenylchloride in the presence of a base, characterized in that an alkali or alkaline earth metal hydroxide is used as the base.
    Type: Grant
    Filed: September 8, 1981
    Date of Patent: March 22, 1983
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Wassen, Heinrich Konigshofen
  • Patent number: 4377693
    Abstract: 2-chloro-4,5-disubstituted-thiazoles have been found to be effective in reducing herbicidal injury to sorghum plants due to the application thereto of acetanilide and thiocarbamate herbicides.
    Type: Grant
    Filed: August 28, 1980
    Date of Patent: March 22, 1983
    Assignee: Monsanto Company
    Inventors: Robert K. Howe, Len F. Lee
  • Patent number: 4374662
    Abstract: A compound of the formula: ##STR1## wherein R is a hydrogen atom or a lower alkoxy group and X and Y are, the same or different, each a hydrogen atom, a halogen atom, a lower alkyl group, a lower alkoxy group, a carboxy(lower)alkoxy group or a lower alkoxycarbonyl(lower)alkoxy group, which is useful as a herbicide.
    Type: Grant
    Filed: November 6, 1981
    Date of Patent: February 22, 1983
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Hiroyuki Konishi, Naganori Hino, Hiroshi Matsumoto, Ryo Yoshida
  • Patent number: 4370276
    Abstract: The present invention provides a process for the continuous production of dialkylperoxydicarbonates of the general formula: ##STR1## in which R stands for the same or different, straight-chained, cyclic or branched alkyl radicals containing 6 to 18 carbon atoms, by the continuous reaction of a chloroformic acid ester of the general formula: ##STR2## wherein R has the above-given meanings, in an aqueous medium with hydrogen peroxide and an alkali metal hydroxide at a temperature of from -10.degree. C. to +50.degree. C. in at least two reaction zones connected in series and continuous isolation of the dialkylperoxydicarbonate formed from the solvent-free reaction mixture with the use of a centrifuge, wherein the reaction is carried out in the presence of a surfactant and the dialkylperoxydicarbonate formed is separated in molten form from the alkaline reaction mixture heated to or just above the melting temperature of the dialkylperoxydicarbonate.
    Type: Grant
    Filed: September 16, 1981
    Date of Patent: January 25, 1983
    Assignee: Peroxide Chemie GmbH
    Inventors: Hans Appel, Gottfried Brossmann
  • Patent number: 4370341
    Abstract: Herein is disclosed compounds of the formula ##STR1## in which R.sup.1,R.sup.2,R.sup.3,R.sup.4 and R.sup.5 each is hydrogen or lower alkyl, therapeutically acceptable acid addition salts thereof, processes for their preparation, methods of using the compounds and pharmaceutical compositions. The compounds exhibit dopamine-receptor stimulating activity in a mammal and are useful for treating hyperprolactinemia, galactorrhea, amenorrhea, impotence, Parkinsonism, diabetes, acromegaly, hypertension and other central nervous system disorders.
    Type: Grant
    Filed: December 11, 1980
    Date of Patent: January 25, 1983
    Assignee: Ayerst, McKenna & Harrison, Ltd.
    Inventors: Andre A. Asselin, Leslie G. Humber
  • Patent number: 4362548
    Abstract: Compounds of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are alkyl or halo; R.sup.3 is hydrogen or alkyl; Z is halo; and R.sup.4 is alkoxycarbonyl, alkoxy, phenyl, substituted phenyl,a group of the formula ##STR2## wherein R.sup.5 and R.sup.6 are hydrogen, alkyl, alkenyl or alkynyl; a group of the formula ##STR3## wherein R.sup.7 and R.sup.8 are hydrogen or alkyl; A five or six-membered aromatic heterocyclic ring of the formula ##STR4## wherein at least one of V, W, X or Y is an oxygen, sulfur or nitrogen atom, R.sup.9 is alkyl and n is 0, 1, 2 or 3 have herbicidal and plant-growth-regulating activity.
    Type: Grant
    Filed: January 29, 1981
    Date of Patent: December 7, 1982
    Assignee: Chevron Research Company
    Inventor: Stephen D. Ziman
  • Patent number: 4360477
    Abstract: Alkanols can be carbonylated with carbon monoxide and oxygen at elevated temperatures in the presence of certain copper salts to form dialkyl carbonates. The invention also covers the carbonylation by recycling of the azeotropic mixture of methanol and the corresponding dimethyl carbonate.
    Type: Grant
    Filed: November 9, 1981
    Date of Patent: November 23, 1982
    Assignee: General Electric Company
    Inventors: John E. Hallgren, Gary M. Lucas
  • Patent number: 4359427
    Abstract: The invention covered relates to an improved, solvent-free process for the continuous manufacture of peroxydicarbonate polymerization catalysts. The improvement in the process is the mere decanting of the reaction product through a filtering medium into a separation zone, decanting to a washing zone, decanting to a second separation zone and then taking the product up in an aqueous medium containing a suitable emulsifying agent whereby the resultant initiator or catalyst emulsion can be conveniently and safely stored until ready for use in a polymerization reaction.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: November 16, 1982
    Assignee: The B. F. Goodrich Company
    Inventor: Keith L. Gardner
  • Patent number: 4355183
    Abstract: Inhibition of the formation of color bodies and color-forming materials and other contaminants and/or decolorization of discolored sulfur-containing organic compounds containing divalent sulfur by addition of a small amount of oxalic acid.
    Type: Grant
    Filed: August 8, 1979
    Date of Patent: October 19, 1982
    Assignee: Phillips Petroleum Company
    Inventors: Martin E. Nash, Edward E. Huxley
  • Patent number: 4350633
    Abstract: Disclosed herein are 2,3-dihydro-1H-indole-2-carboxylic acids substituted on the nitrogen with 3-mercapto-2-alkyl-1-oxoalkyl, 3-phosphoryl-2-alkyl-1-oxopropyl, or 2-amino-2-alkyl-1-oxoalkyl derivatives which act as inhibitors of angiotensin converting enzyme and as antihypertensive agents. The compounds of the invention (excluding disclosed intermediates) have the general formula: ##STR1## wherein: n is 1 or 0;R.sub.1 is hydrogen, lower alkyl, aryl or aralkyl;R.sub.2 is hydrogen or lower alkyl;R.sub.3 is hydrogen, lower alkyl or aroyl;R.sub.5 is hydroxy, amino, or lower alkoxy;X is hydrogen, hydroxy, lower alkyl, lower alkoxy, or halogen;Y is hydrogen, lower alkyl, or aryl;Y is hydrogen, lower alkyl, or aryl;R.sub.4 is ##STR2## wherein: L is O, NR.sub.7 or S (where R.sub.7 is hydrogen or lower alkyl);M is R.sub.8, OR.sub.8, SR.sub.8, or NR.sub.9 R.sub.10 (where R.sub.8 is hydrogen, lower alkyl, aryl, or aralkyl; and R.sub.9 and R.sub.10 are, independently, hydrogen, lower alkyl, or aryl);A is O, NR.sub.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: September 21, 1982
    Assignee: American Home Products Corporation
    Inventors: Dong H. Kim, Ronald J. McCaully
  • Patent number: 4349485
    Abstract: An enhanced catalytic aromatic carbonate process which comprises contacting a phenol, carbon monoxide, an oxidant, a base, the Group VIIIB element selected from ruthenium, rhodium, palladium, osmium, iridium or platinum, and a manganese tetradentate redox co-catalyst. The resulting aromatic mono- and/or poly-carbonates are useful in the preparation of polycarbonates or as polycarbonates per se, respectively, which can be molded or formed into films, sheets, fibers, laminates or reinforced plastics by conventional techniques.
    Type: Grant
    Filed: November 23, 1979
    Date of Patent: September 14, 1982
    Assignee: General Electric Company
    Inventor: John E. Hallgren
  • Patent number: 4337212
    Abstract: Described are substituted tricyclodecane derivatives having the generic structure: ##STR1## wherein Y is a moiety having a structure selected from the group consisting of: ##STR2## wherein one of the dashed lines represents a carbon-carbon single bond and the other of the dashed lines represents a carbon-carbon double bond; wherein R.sub.1 and R.sub.2 represent hydrogen or methyl with the proviso that one of R.sub.1 and R.sub.2 is hydrogen and the other of R.sub.1 and R.sub.2 is methyl; wherein R.sub.3 is hydrogen, C.sub.1 -C.sub.3 acyl, C.sub.3 or C.sub.4 alkyl or C.sub.3 or C.sub.4 alkenyl; wherein R.sub.4, R.sub.5 and R.sub.6 represent hydrogen or methyl with the additional proviso that one of R.sub.4, R.sub.5 and R.sub.6 is methyl and the other two of R.sub.4, R.sub.5 and R.sub.6 is hydrogen.
    Type: Grant
    Filed: September 25, 1981
    Date of Patent: June 29, 1982
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Mark A. Sprecker, John B. Hall
  • Patent number: 4323519
    Abstract: A crude organic solvent solution of a polycarbonate containing an impurity is washed with an aqueous washing liquid by forming a water in oil dispersed phase by mixing the crude solution of the polycarbonate with a small amount of aqueous washing liquid in order to form the water in oil dispersed phase and then causing a phase inversion from the water in oil dispersed phase into an oil in water dispersed phase, and then, separating the organic solvent solution of the polycarbonate from the aqueous washing liquid.
    Type: Grant
    Filed: April 11, 1979
    Date of Patent: April 6, 1982
    Assignee: Mitsubishi Chemical Industries, Ltd.
    Inventors: Hazime Mori, Katsuhisa Kohyama, Katsuhiko Nakamura, Shinichi Takamatsu
  • Patent number: 4307032
    Abstract: A process for preparing a dialkyl carbonate by contacting a glycol carbonate with an alcohol at an elevated temperature in the presence of a thallium compound.
    Type: Grant
    Filed: May 13, 1980
    Date of Patent: December 22, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Heinrich Krimm, Hans-Josef Buysch, Hans Rudolph
  • Patent number: 4304940
    Abstract: In the preparation of a 1-alkyl- and 2-aryl-thio-methylphenol of the formula ##STR1## in which R.sup.1 is, or the radicals R.sup.1 are, in the 3-, 5- and/or 6-positions relative to the hydroxyl group and each independently is a hydrogen or halogen atom, or an alkyl, cycloalkyl, aryl, aralkyl or alkoxy group,n is 1, 2, or 3, andR.sup.2 is an optionally substituted alkyl group having 1 to 12 carbon atoms, an optionally substituted cycloalkyl group having 3 to 6 carbon atoms, an optionally substituted phenyl radical or an optionally substituted aralkyl radical,by reacting a phenol of the formula ##STR2## with formaldehyde or an formaldehyde producing compound and with a mercaptan or a thiophenol of the formulaR.sup.2 --S--H.the improvement which comprises effecting the reaction at a temperature of about 90.degree. to 220.degree. C.
    Type: Grant
    Filed: August 27, 1980
    Date of Patent: December 8, 1981
    Assignee: Bayer Aktiengesellschaft
    Inventors: Karlfried Wedemeyer, Helmut Fiege
  • Patent number: 4302605
    Abstract: A process is provided for preparing dialkyl sulfides by reacting alkanols and hydrogen sulfide in the presence of a zeolite catalyst that contains a reduced amount of alkali metal cations.
    Type: Grant
    Filed: April 18, 1980
    Date of Patent: November 24, 1981
    Assignee: Pennwalt Corporation
    Inventors: Bernard Buchholz, Edward J. Dzierza
  • Patent number: 4301075
    Abstract: Compounds of the formulae I or II ##STR1## and processes for their preparation are described. In the above formulae, Z is a tetravalent aliphatic radical, which can be interrupted by hetero-atoms, or a substituted or unsubstituted tetravalent cycloaliphatic radical, which can contain hetero-atoms and/or can be fused to a benzene ring, A is --C(R.sup.4).dbd.C(R.sup.5)(R.sup.6) or --C.tbd.C--R.sup.5, especially --CH.dbd.CH.sub.2, R.sup.1 and R.sup.2 independently of one another are H, methyl, phenyl, --CN or Cl, or together are trimethylene, tetramethylene, ##STR2## R.sup.3 is a direct bond, C.sub.1-8 alkylene, cyclohexylene, phenylene or --CH.sub.2 -phenylene with the --CH.sub.2 group bonded to the N atom, R.sup.4 and R.sup.6 independently of one another are H, methyl or ethyl and R.sup.5 is H or C.sub.1-9 alkyl. The compounds of the formula I and II are valuable intermediates for the preparation of silicon-modified adhesion promoters.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: November 17, 1981
    Assignee: Ciba-Geigy Corporation
    Inventors: Dieter Lohmann, Martin Roth, Marcus Baumann
  • Patent number: 4299768
    Abstract: 1-Pyrrole- and 1-pyrrolidine-carboxylic acid derivatives corresponding to the general formula: ##STR1## in which R represents an alkyl radical having from 1 to 4 carbon atoms, preferably ethyl, and Am represents a group: ##STR2## wherein R.sub.1 represents a 3-oxo-alkyl radical ##STR3## or a 3-oxo-alkenyl radical ##STR4## and R.sub.2 represents hydrogen or R.sub.1 and R.sub.2, when they are identical, each represent hydrogen, ##STR5## R.sub.3 representing an alkyl radical having from 1 to 5 carbon atoms with the proviso that when R.sub.1 and R.sub.2 are simultaneously hydrogen, Am represents the group A.The novel derivatives are useful as intermediates for synthetizing azaprostaglandines.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: November 10, 1981
    Assignee: LABAZ
    Inventors: Charles Pigerol, Michel Schaefer, Souli Nanthavong
  • Patent number: 4299964
    Abstract: Compounds having the formula ##STR1## in which R is selected from the group consisting of chloro and fluoro;R.sub.1 -R.sub.4 are each independently selected from the group consisting of hydrogen and 1-4 carbon alkyl; andX is oxygen or sulfur protect crops from thiocarbamate herbicidal injury.
    Type: Grant
    Filed: September 26, 1980
    Date of Patent: November 10, 1981
    Assignee: Stauffer Chemical Company
    Inventor: Eugene G. Teach
  • Patent number: 4298613
    Abstract: Heterocyclic sulfenamides, such as N-[2-chloro-5-(trifluoromethyl)phenyl]-N-[2,4-dinitro-6-trifluoromethyl)ph enyl]-3-nitro-2-pyridinesulfenamide, are useful as miticides, insecticides, fungicides and ovicides.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: November 3, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Gerald E. Lepone