Patents Assigned to Chemie Linz Gesellschaft m.b.H.
  • Patent number: 5543560
    Abstract: A method for the hydrogenolytic reduction of peroxidic ozonolysis products to the corresponding carbonyl compounds in the presence of an inert organic diluting agent and in the presence of a monolith catalyst at hydrogen pressures of 0.01 to 2.0 MPa and at temperatures of -10.degree. to 150.degree. C., and a device for the catalytic hydrogenolysis of chemical compounds which yield uniform, new products by means of hydrogenolysis with hydrogen.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: August 6, 1996
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Stefan Pollhammer, Josef Scaller, Willibald Winetzhammer
  • Patent number: 5481035
    Abstract: Process for the preparation of asymmetrically substituted ureas, carbamates, thiocarbamates or substituted isocyanates by reaction of an adduct of isocyanic acid and a tertiary amine with a primary and secondary amine, an alcohol, a thiol or a compound having one or two non-cumulated olefinic double bonds, and a process for the preparation of N-mono- or N,N-disubstituted ureas by reaction of ammonium isocyanates with a primary or secondary amine in a diluent.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: January 2, 1996
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Martin Mullner, Gerhard Stern, Markus Rossler
  • Patent number: 5453515
    Abstract: Benzophenone iminodiimides of the formula I ##STR1## which Y denotes hydroxyl or carboxyl, R.sub.1 denotes the optionally substituted radicals alkylene, phenylene or benzylidene, R.sub.2 denotes the radicals OH, substituted or unsubstituted alkyl or NH--CO--NHR.sub.3 and R.sub.3 denotes the radicals H, alkyl, phenyl or benzyl, processes for their preparation and polymers prepared therefrom.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: September 26, 1995
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Gerd Greber, deceased, Heinrich Gruber, Afschin Hassanein
  • Patent number: 5436256
    Abstract: Process for the preparation of 5-arylhydantoins by reaction of an allantoin acid alkyl ester with an aryl compound in a concentrated inorganic acid at temperatures from room temperature to 150.degree. C., with or without a phase transfer agent.
    Type: Grant
    Filed: November 26, 1993
    Date of Patent: July 25, 1995
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Wolfram Hendel, Engelbert Kloimstein, Klaus Fitzinger, Antonia Viehbock, Kurt Haidinger
  • Patent number: 5414083
    Abstract: A process for the dissolution of chemical compounds by use of ureas in which at least one of the urea's two nitrogen atoms is part of a non-aromatic ring which can be broken by an oxygen or sulphur atom as a chemical solvent, and a method of producing tri- or tetraalkylated ureas or bis ureas wherein at least one of the urea's nitrogen atoms is part of a non-aromatic ring which can be broken by an oxygen or sulphur atom by means of dialkylating the --NH.sub.2 group of a urea with an alkene or alkene arylene alkene dihalogenide, disulphonate or dihydrogen sulphonate in the presence of a solid base and a phase-transfer catalyst.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: May 9, 1995
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Kurt A. Hackl, Markus Rossler, Martin Mullner, Gerhard Stern
  • Patent number: 5412110
    Abstract: Process to separate racemic mixtures of beta-hydroxy or beta-acyloxy-delta-valerolactones, which in position 2 and/or 5 of the lactone ring are substituted by hydrogen, alkyl groups having 4 to 20 C atoms, which are optionally penetrated by an oxygen atom, or by aralkyl groups, whereby not both positions are substituted by hydrogen, through reaction of the racemic mixture in the presence of a hydrolase with or without esterifying agent in a diluent and separation of the reaction mixture, which contains an enantiomerically pure beta-hydroxy-delta-valerolactone and an enantiomerically pure beta-acyloxy-delta-valerolactone, through conventional methods into the enantiomically pure compounds,a process for the manufacture of enantiomerically pure oxetanones using said separation process and enantiomerically pure beta-acyloxy-delta-valerolactones.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: May 2, 1995
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Peter Pochlauer, Marion Wagner
  • Patent number: 5405425
    Abstract: Method of conditioning soils, in which copolymers which are composed of acrylamide and/or methacrylamide, a sulphonyl-containing, substituted acrylamide or methacrylamide, a multi-functional, water-soluble vinyl compound and, if appropriate, carboxyl-containing comonomers are added to the soils as soil conditioners.
    Type: Grant
    Filed: January 13, 1992
    Date of Patent: April 11, 1995
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Stefan Pieh, Johann Krammer
  • Patent number: 5384347
    Abstract: Flame-resistant plastics which contain trihydrazinotriazine and/or triguanidinotriazine and/or the phosphoric acid or boric acid salts thereof as flame retardants.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: January 24, 1995
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventor: Heinrich Horacek
  • Patent number: 5373038
    Abstract: Flame resistant plastics that contain guanidine barbiturates, guanidine thiobarbiturates or their mixtures as flame retardants, and also guanidine barbiturate and guanidine thiobarbiturate.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: December 13, 1994
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventor: Heinrich Horacek
  • Patent number: 5369198
    Abstract: Copolymers which are composed essentially of the structural elements ##STR1## and, if necessary, ##STR2## The copolymers can be employed as dispersing agents for inorganic or organic substances, especially as a plasticiser for hydraulic binders.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: November 29, 1994
    Assignees: Chemie Linz Gesellschaft m.b.H, Holderchem Holding AG
    Inventors: Gerhard Albrecht, Hubert Leitner, Rudolf Lindenberger, Richard Siedl, Christian Werenka, Willi Suter
  • Patent number: 5360601
    Abstract: A process for the preparation of isocyanic acid, characterized in that N,N-disubstituted ureas are decomposed at elevated temperature to a secondary amine of lower volatility and to isocyanic acid, which is drawn off at the top.
    Type: Grant
    Filed: August 13, 1993
    Date of Patent: November 1, 1994
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Kurt A. Hackl, Martin Mullner, Erich Schulz, Gerhard Stern, Heinz Falk
  • Patent number: 5346816
    Abstract: Enantioselective process for the preparation of the S enantiomer of an optically active cyanohydrin by reacting an aldehyde or an asymmetric ketone with a cyanide group donor in the presence of an S-hydroxynitrile lyase in a diluent and isolating the cyanohydrin formed from the reaction mixture.
    Type: Grant
    Filed: September 1, 1992
    Date of Patent: September 13, 1994
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Herfried Griengl, Norbert Klempier, Peter Pochlauer
  • Patent number: 5344473
    Abstract: An apparatus is provided for the deposition of melamine from hot reaction gases into a wash liquid. The apparatus includes a heated gas feed pipe for introducing the hot reaction gases into an absorption pipe. The gas feed pipe is provided with an extension nozzle, the lower end of which projects coaxially into the absorption pipe. The upper part of the absorption pipe and the gas feed pipe are surrounded by a closed container which serves as a storage vessel for wash liquid. The inner wall of the absorption pipe is constantly washed by flowing wash liquid from the closed container.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: September 6, 1994
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Gerald Szolgyenyi, Peter Hildebrand
  • Patent number: 5344942
    Abstract: (R) and (S) enantiomers of the formula ##STR1## in which n is 1 or 2,W is as defined in the specificationwhich are characterized in that X is halogen, SO.sub.3 H, SO.sub.2 Cl or SO.sub.2 NR.sub.1 R.sub.2 where R.sub.1 and R.sub.2 are, independently of one another, hydrogen, substituted or unsubstituted, branched or unbranched alkyl, substituted or unsubstituted aryl or heteroaryl, or R.sub.1 and R.sub.2 form, together with the nitrogen, a substituted or unsubstituted heterocycle, a process for their preparation and their use for racemate resolution.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: September 6, 1994
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Christian Noe, Gunter Gmeiner
  • Patent number: 5283362
    Abstract: Process for the preparation of very pure ureas of the formula phenyl--(NH--CO--NR.sub.1 R.sub.2).sub.n in which phenyl represents an unsubstituted or substituted phenyl or phenylene group and R.sub.1 and R.sub.2 are either identical and each represent an alkyl group, or are different, in which case R.sub.1 represents a hydrogen atom and R.sub.2 represents an alkyl or phenyl group, or R.sub.1 and R.sub.2, together with the nitrogen atom, represent an aliphatic heterocyclic ring and n is the number 1 or 2, by reacting a phenylurea of the formula phenyl--(NH--CO--NH.sub.2).sub.n with an amine of the formula NR.sub.1 R.sub.2 H at temperatures from 100 to 200.degree. C. in a diluent which is inert under the reaction conditions, the reaction being interrupted before by-products are formed, and the urea which is formed being removed from the starting compounds, and the unreacted starting compounds being returned to the process if appropriate.
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: February 1, 1994
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Kurt A. Hackl, Heinz Falk
  • Patent number: 5278054
    Abstract: A process for the enzymatic hydrolysis of a carboxylic acid derivative by dissolving the carboxylic acid derivative in an organic solvent which is miscible with water only to a slight extent, saturation of the organic solution with water, bringing the water-saturated organic solution into contact with a hydrolase, the hydrolysis taking place, after which the reaction solution is saturated with water again and brought into contact with the hydrolase and subsequently with water again until the desired degree of conversion is achieved.
    Type: Grant
    Filed: April 17, 1992
    Date of Patent: January 11, 1994
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Maria Buchner, Robert Estermann, Herbert Mayrhofer, Gerald Banko
  • Patent number: 5248755
    Abstract: Process for the preparation of asymmetrically substituted ureas, carbamates, thiocarbamates or substituted isocyanates by reaction of an adduct of isocyanic acid and a tertiary amine with a primary and secondary amine, an alcohol, a thiol or a compound having one or two non-cumulated olefinic double bonds, and a process for the preparation of N-mono- or N,N-disubstituted ureas by reaction of ammonium isocyanate with a primary or secondary amine in a diluent.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: September 28, 1993
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Martin Muller, Gerhard Stern, Erich Schulz, Markus Rossler
  • Patent number: 5232976
    Abstract: A thermally expandable fire-protection compound consisting of expandable graphite, an aqueous chloroprene latex containing carboxyl groups, and substances which, in the event of fire, form a paracrystalline carbon skeleton.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: August 3, 1993
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Heinz Horacek, Hermann Wudy
  • Patent number: 5223635
    Abstract: Process for the removal of isocyanic acid from a gaseous mixture of isocyanic acid and ammonia by introducing a tertiary amine or ether at 250.degree. to 600.degree. C. The gaseous reaction mixture is passed into an inert diluent and cooled, to condense an adduct of isocyanic acid and tertiary amine or ether, and the ammonia being removed as a gas.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: June 29, 1993
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventors: Martin Mullner, Gerhard Stern, Erich Schulz
  • Patent number: 5206066
    Abstract: Melamine resin prepregs or melamine resin laminates which consist of a web-like fiber reinforcement which is impregnated with melamine resins which essentially comprisea) 40-85% by weight of at least partly etherified melamine resins, which are obtainable by reaction of melamine, formaldehyde and alkanols having 1 to 8 C atoms in a molar ratio of melamine formaldehyde:alkanol of 1:(5 to 6):(4 to 6), andb) 60-15% by weight of diols consisting of 25 to 75% by weight of polyester-diols and/or polyether-diols having a molecular weight of at least 400 g/mol and 75 to 25% by weight of low molecular weight diols having 2 to 12 C atoms.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: April 27, 1993
    Assignee: Chemie Linz Gesellschaft m.b.H.
    Inventor: Heinrich Horacek