Patents Examined by John A. Sopp
  • Patent number: 4720588
    Abstract: This invention pertains to an improved process for preparing noncyclic polyalkylene polyamine compounds in high selectivity by reacting an alkanolamine and an alkylene amine in the presence of an inert gas and an acidic catalyst. The improvement resides in effecting the reaction under fixed bed catalytic conditions and maintaining the reaction conditions such that a vapor phase condition exists for the reaction mixture comprising both reactants and products. To accomplish the formation of vapor phase conditions sufficient inert gas is injected into the feedstream along with alkanolamine and alkylene amine so that the dew point temperature of the reaction product mix is below the reaction temperature at reaction pressure.
    Type: Grant
    Filed: January 16, 1986
    Date of Patent: January 19, 1988
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Michael G. Turcotte, Cawas A. Cooper, Michael E. Ford, Thomas A. Johnson
  • Patent number: 4720586
    Abstract: There are provided compounds of formula I, ##STR1## in which R.sub.1 represents OH,R.sub.2 and R.sub.3, which may be the same or different, each independently represent hydrogen, fluorine, chlorine, bromine, alkyl C1 to 6, nitro, nitrile, (CH.sub.2).sub.p R.sub.9 or SR.sub.9,W represents a single bond, a 1,2; 1,3; or 1,4-disubstituted benzene ring; a --CH.dbd.CH--group or a 1,4-cyclohexanediyl group;X respresents NH, O, S, SO.sub.2, CO, CH.sub.2, CONH or --COO;Y represents (CH.sub.2)q, CO, CS, SO.sub.2 and R.sub.20 represents hydrogen,or Y represents CR.sub.15 R.sub.16 CR.sub.17 R.sub.18,wherein the carbon atom bearing R.sub.15 and R.sub.16 is adjacent to X and in whichR.sub.15 and R.sub.18, together with the carbon atom to which they are attached form a carbonyl group, and R.sub.15, R.sub.16 and R.sub.20 each represent hydrogen, orR.sub.15 and R.sub.20 together form a chain --CH.sub.2 --, and R.sub.16, R.sub.17 and R.sub.18 each represent hydrogen, orR.sub.15, R.sub.16, R.sub.17 and R.sub.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: January 19, 1988
    Assignee: Fisons, plc
    Inventors: John Dixon, Francis Ince
  • Patent number: 4720582
    Abstract: Diamines corresponding to the general formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 may be identical or different and represent hydrogen or straight- or branched-chain C.sub.1 -C.sub.12 alkyl groups, provided that two of the radicals,R.sup.1, R.sup.2 and R.sup.3, represent hydrogen, m and n each represent 0 or 1, provided that m+n=1; where m or n=0, the free valence is saturated by hydrogen, optionally in the form of isomeric mixtures, and optionally containing up to 35%, by weight, of the corresponding perhydrogenated diamines, and up to 10%, by weight, of the corresponding unhydrogenated aromatic diamines.Also, a process for preparing these diamines by catalytically-hydrogenating the corresponding aromatic diamines with 3 moles of hydrogen per mole of diamine, or catalytically-hydrogenating the corresponding dinitro compounds with 9 moles of hydrogen per mole of dinitro compound.
    Type: Grant
    Filed: August 15, 1983
    Date of Patent: January 19, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hartmut Knofel, Michael Brockelt, Stefan Penninger
  • Patent number: 4720583
    Abstract: The invention relates to a process for the isomerization of o-, m- or p-toluidine, or of a mixture of them, on a zirconium-containing zeolite catalyst of the pentasil type. Catalysts of this type are distinguished by particularly high activity and a long useful life. The invention particularly relates to the preparation of m-toluidine by isomerization of o- and/or p-toluidine on zirconium-containing zeolite catalysts of the pentasil type.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: January 19, 1988
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus Eichler, Ernst I. Leupold, Hans-Jurgen Arpe, Herbert Baltes
  • Patent number: 4720585
    Abstract: Aminopeptidase inhibitory activity is exhibited by compounds having the formula ##STR1## wherein R.sub.1 is hydrogen, alkyl, carboxyalkyl, halo-substituted alkyl, hydroxyalkyl, aminoalkyl, mercaptoalkyl, alkylthioalkyl, (cycloalkyl)alkyl, (heteroaryl)alkyl, arylalkyl, carbamoylalkyl, guanidinylalkyl or heteroaryl; andR.sub.2 and R.sub.3 are each independently hydrogen, alkyl, cycloalkyl, hydroxyalkyl, aminoalkyl, aryl, arylalkyl, heteroaryl or heteroarylalkyl.
    Type: Grant
    Filed: September 18, 1985
    Date of Patent: January 19, 1988
    Assignee: E. R. Squibb & Sons, Inc.
    Inventors: Jollie D. Godfrey Jr., Eric M. Gordon
  • Patent number: 4719312
    Abstract: The present invention is concerned with the preparation of lysosomotropic detergent agents and pharmaceutical composition useful in the treatment of cancer. These compounds are amine derivatives having a pK of 3.5 of the general structure ##STR1## in which R.sub.1 is C.sub.8-30 alkyl, C.sub.8-30 -alkenyl, substituted C.sub.4-30 alkyl or substituted C.sub.4-30 -alkenyl; R.sub.2 is hydrogen or C.sub.1-4 alkyl and Y is an electron withdrawing group, to control the pK, selected from trifluoroethyl, and difluoroethyl.
    Type: Grant
    Filed: September 2, 1986
    Date of Patent: January 12, 1988
    Assignee: Merck & Co., Inc.
    Inventor: Raymond A. Firestone
  • Patent number: 4714778
    Abstract: This invention relates to a class of alkenylated toluenediamines having at least one alkenyl group ortho to an amine group. More particularly the toluenediamines are represented by the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are hydrogen, C.sub.1-3 aliphatic, phenyl, halogen or alkoxy radicals, or R.sub.2 and R.sub.4 or R.sub.5 are bridged via an alkylene radical --(CH.sub.2).sub.y -- wherein y=2 to 5, and x is one or two provided that in said formula at least one of R.sub.1, R.sub.2, R.sub.3, R.sub.4 or R.sub.5 is C.sub.1 or greater.The above described alkenylated toluenediamines have been found to be well suited as antioxidants and as tri- and tetra functional chain extenders in forming polyurethane/urea elastomers systems and for providing pendant unsaturation for post curing and polymerization.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: December 22, 1987
    Assignee: Air Products and Chemicals, Inc.
    Inventors: William F. Burgoyne, Jr., Dale D. Dixon
  • Patent number: 4713488
    Abstract: Cycloalkyl aminophenol derivatives are produced by reacting o-, m- or p-aminophenol with a cycloalkanone having 5 to 12 carbon atoms in the presence of a reducing agent and preferably with the addition of an acid.
    Type: Grant
    Filed: October 11, 1985
    Date of Patent: December 15, 1987
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Masayuki Omatsu, Naoki Yonese, Mitsuru Kondo
  • Patent number: 4709096
    Abstract: Stilbene derivatives of the formula (I) ##STR1## and distyryl derivatives of the formula (II), ##STR2## as defined in the specification, and an electrophotographic photoconductor comprising an electroconductive support material and a photosensitive layer overlayed thereon comprising at least one of the above derivatives, are disclosed.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: November 24, 1987
    Assignee: Ricoh Company, Ltd.
    Inventor: Masaomi Sasaki
  • Patent number: 4707498
    Abstract: Novel fluorinated diaminoalkyne derivatives are inhibitors of ornithine decarboxylase enzyme and have the following general Formula I: ##STR1## wherein R represents C.sub.1 -C.sub.4 alkyl, or preferably, hydrogen.
    Type: Grant
    Filed: January 14, 1986
    Date of Patent: November 17, 1987
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Michael Kolb, David A. Kendrick
  • Patent number: 4704474
    Abstract: New 1,4-diamino-5-chloro-2-nitrobenzene derivatives are disclosed of the formula I ##STR1## Wherein R.sup.1 and R.sup.2 are the same or different and are each hydrogen, 2-hydroxyethyl or 2,3-dihydroxypropyl, with the proviso, that at least one of said R.sup.1 and R.sup.2 is 2,3-dihydroxypropyl, along with processes for their production, as well as hair coloring compositions containing the same and methods of coloring hair. The compounds are red- to violet-coloring direct dyes, and are readily soluble in water, with favorable toxicological characteristics.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: November 3, 1987
    Assignee: Wella Aktiengesellschaft
    Inventors: Eugen Konrad, Thomas Clausen
  • Patent number: 4703114
    Abstract: Polyethers of the formula: ##STR1## wherein: R is the residue of a starting active hydrogen compound with removal of the active hydrogen atom, R.sub.1 is a C.sub.1 -C.sub.10 alkyl or aryl, R.sub.2 is a C.sub.1 -C.sub.10 alkyl, R.sub.3 is H, CH.sub.3, C.sub.2 H.sub.5 or phenyl, x is 5-100, y is 1-5, and z is 2-8 are less active than those having primary or secondary alcoholic function at terminals.
    Type: Grant
    Filed: August 9, 1985
    Date of Patent: October 27, 1987
    Assignee: Dai-Ichi Kogyo Seiyaku Co., Ltd.
    Inventors: Shigeo Mori, Junichiro Matsumoto
  • Patent number: 4695654
    Abstract: Gem-dihalo-1,8-diamino-4-aza-octane derivatives useful as antiproliferative or antitumor agents.
    Type: Grant
    Filed: August 21, 1985
    Date of Patent: September 22, 1987
    Assignee: Merrell Dow Pharmaceuticals Inc.
    Inventors: Fritz Gerhart, Pierre Mamont
  • Patent number: 4686309
    Abstract: The invention provides compounds of formula: ##STR1## in which R=H, halogen, alkyl, alkyloxy, alkythio, NH.sub.2, alkylamino, dialkylamino or CF.sub.3, R.sub.3 =H or alkyl, either R.sub.4 and R.sub.5 =H and R.sub.1 and R.sub.2 =H or alkyl, optionally substituted by alkenyl (2 to 4 C) or alternatively R.sub.1 and R.sub.2 form together a saturated heterocyclic ring containing 4 to 7 ring members and optionally containing another heteroatom such as O, S or N optionally substituted by alkyl, or R.sub.4 =H, R.sub.1 =H or alkyl and R.sub.2 and R.sub.5 together form an alkylene (3 to 4 C) radical and (i) either A=alkyl or phenyl which is unsubstituted or substituted by one or two substituents chosen from halogen, alkyl, alkyloxy, alkylthio, NH.sub.2, alkylamino, dialkylamino, NO.sub.2 or CF.sub.3 or alternatively A=pyridyl, benzyl or cycloalkyl (3 to 6C), Y=S, SO or SO.sub.2 or a radical: ##STR2## in which R.sub.6 =H or alkyl and R.sub.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: August 11, 1987
    Assignee: Rhone-Poulenc Sante
    Inventors: Jean-Claude Barriere, Jean-Pierre Corbet, Claude Cotrel, Daniel Farge, Jean-Marc Paris
  • Patent number: 4683332
    Abstract: There is disclosed a process for the synthesis of para-nitrodiphenylamines via the Formanilide Process wherein the improvement is characterized in that a specific catalyst is utilized. More specifically, a zinc (II) compound (zinc in the plus two oxidation or valence state), is used as a catalyst in the preparation of para-nitrodiphenylamines via the formanilide process.
    Type: Grant
    Filed: May 20, 1985
    Date of Patent: July 28, 1987
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Budd H. Sturm
  • Patent number: 4683334
    Abstract: A process for producing dimethylamine is provided, comprising reacting methanol and/or dimethylether and ammonia, in amounts sufficient to provide a carbon/nitrogen (C/N) ratio from about 0.2 to about 1.5, and at a temperature from about 250.degree. C. to about 450.degree. C., in the presence of a catalytic amount of a modified acidic zeolite selected from the group consisting of chabazite, erionite, ZK-5, and rho, the zeolite having been modified by treatment with one or more compounds containing at least one element selected from the group consisting of silicon, aluminum, phosphorus, and boron, to deposit thereon at least 0.05 weight percent of the element.
    Type: Grant
    Filed: April 30, 1985
    Date of Patent: July 28, 1987
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Horacio E. Bergna, David R. Corbin, George Sonnichsen
  • Patent number: 4677229
    Abstract: Process for the production of a water-insoluble nitrogeneous organic base, from an aqueous solution of alkali metal bicarbonate and the base hydrochloride, according to which the solution (11) is treated with a complement of the base hydrochloride (12), and the resultant liquid (18) is treated with a basic agent (30) capable of decomposing the hydrochloride. The invention is applied to the regeneration of the amine in the process for the manufacture of sodium bicarbonate by the amines method.
    Type: Grant
    Filed: July 15, 1985
    Date of Patent: June 30, 1987
    Assignee: Solvay & Cie. (Societe Anonyme)
    Inventors: Leon Ninane, Claude Breton
  • Patent number: 4677227
    Abstract: Substantially anhydrous hydrocarbyl-substituted chloramine is efficiently prepared by reacting a primary or secondary amine with a chlorinating agent selected from hypochlorous acid or chlorine monoxide in a non-aqueous reaction medium, without co-production of an amine hydrochloride salt.
    Type: Grant
    Filed: January 14, 1985
    Date of Patent: June 30, 1987
    Assignee: Hans Osborg
    Inventor: Hans Osborg
  • Patent number: 4675445
    Abstract: A process for eliminating N-nitrosamines, particularly N,N-dialkyl-N-nitrosamines and N-alkyl-N-aryl-N-nitrosamines from N-nitrosamine containing compositions through the addition of organic carboxylic acid halides. The process eliminates N-nitroso compounds without rearrangement to C-nitroso compounds.
    Type: Grant
    Filed: November 12, 1985
    Date of Patent: June 23, 1987
    Assignee: BASF Corporation
    Inventors: Pauls Davis, Donald C. Mente
  • Patent number: 4670599
    Abstract: This invention relates to 2,2-dichloro-3,3-dimethylcyclopropylmethylamine, a novel compound which is useful as an agricultural and horticultural fungicide or as a synthetic intermediate for other cyclopropyl derivatives and other compounds, and to a process for production thereof.
    Type: Grant
    Filed: September 21, 1984
    Date of Patent: June 2, 1987
    Assignee: Nihon Tokushu Noyaku Seizo K.K.
    Inventors: Kozo Shiokawa, Shinzo Kagabu, Shinji Sakawa