Patents by Inventor Francois L'Eplattenier

Francois L'Eplattenier has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4327212
    Abstract: The isoindoline-azine nickel complex of the formula ##STR1## colors plastics, lacquers and printing inks in yellow shades of outstanding fastness properties.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: April 27, 1982
    Assignee: Ciba-Geigy Corporation
    Inventors: Paul Lienhard, Francois L'Eplattenier
  • Patent number: 4237286
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: December 2, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost von der Crone
  • Patent number: 4237292
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: December 2, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost von der Crone
  • Patent number: 4237293
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: October 26, 1978
    Date of Patent: December 2, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost von der Crone
  • Patent number: 4144258
    Abstract: 1:1-Metal complexes of azomethines of the formula I ##STR1## wherein A and B are isocyclic or heterocyclic aromatic radicals, with however only one of the radicals A and B being a benzene ring, R represents a hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, or an aryl radical, and the complexing metal ions are bivalent cations of the transition metals, zinc ions or cadmium ions which are useful for pigmenting high molecular organic material.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: March 13, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Laurent Vuitel
  • Patent number: 4132708
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: March 3, 1977
    Date of Patent: January 2, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost VON DER Crone
  • Patent number: 4111947
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: March 1, 1977
    Date of Patent: September 5, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost VON DER Crone
  • Patent number: 4097484
    Abstract: Mixed complexes of methine dyes of formula ##STR1## wherein M.sub.1 represents zinc, cadmium, lead or manganese, M.sub.2 represents cobalt, copper or nickel, R represents an organic radical, Z.sub.1 represents an oxygen or a sulphur atom or an imino group, X.sub.1 and Y.sub.1 represent hydrogen or halogen atoms, alkyl, alkoxy, alkoxycarbonyl, alkylsulphonyl or alkylcarbamoyl groups of 1 to 6 carbon atoms, nitro, carbamoyl or arylcarbamoyl groups, or the radicals X.sub.1 and Y.sub.1 form a fused benzene ring, X represents a hydrogen atom, Y represents a halogen atom and Z represents a nitro group or a group of formula R.sub.1 Y.sub.2 --, wherein R.sub.1 represents a hydrogen atom, an alkyl or cycloalkyl group of 1 to 6 carbon atoms, an aralkyl or aryl group, and Y.sub.2 represents an oxygen or a sulphur atom, m is 0 to 4, n is 0 to 4, p is 0 to 3, and the sum of m+n+p must be 4, and wherein the atomic ratio of M.sub.1 :M.sub.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: June 27, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Alexander von Zelewsky, Christoph Frey, Francois L'Eplattenier
  • Patent number: 4065481
    Abstract: 1:1-Metal complexes of azomethines of the formula I ##STR1## wherein A and B are isocyclic or heterocyclic aromatic radicals, with however only one of the radicals A and B being a benzene ring, R represents a hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, or an aryl radical, and the complexing metal ions are bivalent cations of the transition metals, zinc ions or cadmium ions which are useful for pigmenting high molecular organic material.
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: December 27, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Laurent Vuitel
  • Patent number: 4044036
    Abstract: 1:1 metal complexes of bis-azomethines of the formula ##STR1## wherein R denotes an alkylene radical which contains 2-8 C atoms and is optionally interrupted by hetero-atoms, X denotes a H or halogen atom or an alkyl, alkoxy, carboxyl, alkoxy-carbonyl or phenylazo group and Y and Z denote H or halogen atoms, or wherein the substituents Y and Z form a fused benzene ring, if R contains a hetero-atom, Y and Z must not be H atoms, and if R contains 2 C atoms, X, Y and Z must not be H atoms, and a metal are valuable pigments coloring plastics and printing inks in fast yellow to range shades.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: August 23, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Stefan Hari, Alexander McHugh Irvine, James McGeachie McCrae, Laurent Vuitel, Francois L'Eplattenier
  • Patent number: 4024132
    Abstract: Azomethine pigments of the formula ##STR1## and metal complexes thereof, wherein A denotes an isocyclic or heterocyclic aromatic radical, R denotes a H atom, an alkyl group containing 1-6 C atoms, or an aryl radical, X.sub.2 and X.sub.4 denote H atoms or halogen atoms, X.sub.1 and X.sub.3 denote H atoms or halogen atoms, alkoxy or alkylmercapto groups containing 1-6 C atoms, cycloalkoxy groups containing 5-6 C atoms, or aralkoxy, aryloxy or arylmercapto groups, it being possible for one of the substituents X.sub.1 -X.sub.4 also to be a nitro group which are useful for pigmenting of high molecular material.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: May 17, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Laurent Vuitel
  • Patent number: 4022770
    Abstract: Metal complexes of azomethines of the formula ##STR1## are useful for coloring plastics and lacquers in yellow to red shades of excellent fastness properties.
    Type: Grant
    Filed: January 30, 1975
    Date of Patent: May 10, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Jost VON DER Crone
  • Patent number: 4016157
    Abstract: Bis-hydrazone metal complexes of the formula ##STR1## wherein A denotes an isocyclic or heterocyclic radical, R denotes a H atom, an alkyl group or an aryl radical, M denotes a divalent transition metal and zinc or cadmium, X.sub.1 and X.sub.2 independently of one another represent alkyl, cycloalkyl, aralkyl or aryl radicals, or conjointly form a fused carbocyclic or heterocyclic aromatic ring, L denotes a ligand having one or more coordinating N or S atoms, and n denotes the number 1 - 5, are useful for coloring plastic and lacquers in fast yellow to red shades.
    Type: Grant
    Filed: August 26, 1975
    Date of Patent: April 5, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Laurent Vuitel, Francois L'Eplattenier, Andre Pugin
  • Patent number: 4012371
    Abstract: Azo colorants of the formula ##STR1## wherein A denotes the radical of a heterocyclic diazo component, R.sub.1 denotes a hydroxyl, alkyl, phenyl or alkoxycarbonyl group, R.sub.2 denotes a H atom or an alkyl, phenyl, acyl, nitrile, alkoxycarbonyl or carbamoyl group, and X and Y denote substituents which do not confer solubility in water are prepared. The compounds are useful for pigmenting high molecular weight organic materials, such as polyesters, polyolefins and rubber. The compounds have excellent fastness to light, weathering and migration.
    Type: Grant
    Filed: March 10, 1975
    Date of Patent: March 15, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Armand Roueche, Francois L'Eplattenier
  • Patent number: 4008225
    Abstract: Process for the manufacture of bis-azomethine metal complex colorants of the formula ##STR1## wherein A denotes an isocyclic or heterocyclic aromatic radical, X denotes an isocyclic or heterocyclic aromatic radical to which the N-atoms are bonded in the o-position or peri-position, or an alkylene radical containing 2-8 C atoms, and M denotes a divalent transition metal ion, a zinc ion or cadmium ion, characterized in that an o-hydroxyaldimine compound of the formula ##STR2## wherein A has the abovementioned meaning and R denotes an alkyl, cycloalkyl or aryl radical, is reacted with a diamine of the formulaNH.sub.2 --X--NH.sub.2wherein X has the abovementioned meaning, in the molar ratio of 2:1, in the presence of a compound which donates a divalent transition metal cation, zinc ion or cadmium ion.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: February 15, 1977
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Laurent Vuitel, Andre Pugin
  • Patent number: 3988323
    Abstract: 1:1- and 2:1-metal complexes of bishydrazides of the formula I ##SPC1##wherein both A's represent identical or different isocyclic or heterocyclic aromatic radicals, B represents an isocyclic or heterocyclic aromatic radical, and R represents hydrogen, an alkyl group containing 1 - 6 carbon atoms, or an alkyl radical, and the complexing metal ions are bivalent cations of the transition metals, zinc ions or cadmium ions which are useful for pigmenting high molecular organic material.
    Type: Grant
    Filed: December 12, 1975
    Date of Patent: October 26, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Laurent Vuitel
  • Patent number: 3974149
    Abstract: Azomethine pigments of the formula ##SPC1##And metal complexes thereof, wherein A denotes an isocyclic or heterocyclic aromatic radical, R denotes a H atom, an alkyl group containing 1-6 C atoms, or an aryl radical, X.sub.2 and X.sub.4 denote H atoms or halogen atoms, X.sub.1 and X.sub.3 denote H atoms or halogen atoms, alkoxy or alkylmercapto groups containing 1-6 C atoms, cycloalkoxy groups containing 5-6 C atoms, or aralkoxy, aryloxy or arylmercapto groups, it being possible for one of the substituents X.sub.1 -X.sub.4 also to be a nitro group which are useful for pigmenting of high molecular material.
    Type: Grant
    Filed: August 30, 1974
    Date of Patent: August 10, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Laurent Vuitel
  • Patent number: 3963708
    Abstract: Bis-azomethine metal complex colorants of the formulae ##SPC1##Wherein M denotes a divalent transition metal cation, zinc ion or cadmium ion, X denotes an isocyclic or heterocyclic aromatic radical to which the two nitrogen atoms are bonded in the o- or peri-position to one another and Y.sub.1 and Y.sub.2 denote hydrogen, halogen, alkyl, aryl, nitro, alkoxy, phenoxy or hydroxyl, which are suitable for pigmenting high-molecular organic material.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: June 15, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Laurent Vuitel, Andre Pugin
  • Patent number: 3939194
    Abstract: Bis-azomethine pigments of the formula ##SPC1##Wherein X denotes an aromatic radical on which the imino groups are in the o-position, Y denotes a hydroxyl, alkoxy, cycloalkoxy, aralkoxy or aryloxy, amino, alkylamino or arylamino group and Z denotes a H or halogen atom or an alkoxy, nitro or nitrile group, the radical X having to be free of nitro groups if Y denotes an arylamino group and Z denotes a H atom, as well as metal complexes of these bis-azomethines are useful for coloring plastics and lacquers in yellow to red shades of good fastness properties.
    Type: Grant
    Filed: January 2, 1975
    Date of Patent: February 17, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Francois L'Eplattenier, Andre Pugin, Laurent Vuitel