Patents by Inventor Holger Leybach

Holger Leybach 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).

  • Publication number: 20240287281
    Abstract: The present invention relates to compositions, comprising (A) platelet-shaped transition metal particles, wherein the number mean diameter of the platelet-shaped transition metal particles, present in the composition, is in the range of from 15 nm to 1000 nm, the transition metal is selected from silver, copper, gold and palladium, especially silver and copper, very especially silver; (B) one, or more reactive diluents (B); (C) one, or more oligomers (C); (D) one, or more photoinitiators (D); (E) at least a surfactant (E), which is a block copolymer, comprising at least a block A and a block B, wherein a) the block A comprises a1) monomer units (A1) derived from a compound selected from alkyl (meth)acrylates, alkyl (meth)acrylamides, or any mixture thereof, and a2) monomer units (A2) derived from a hydroxy group, or ether group containing alkyl (meth)acrylate; b) the block B comprises monomer units (B) derived from a compound selected from fluorinated (meth)acrylic esters of formula H2C?CR46(C(O)ORF-
    Type: Application
    Filed: May 11, 2022
    Publication date: August 29, 2024
    Inventors: Nikolay A. GRIGORENKO, Andre OSWALD, Holger LEYBACH, Ralf KNISCHKA, Andreas GERNANDT
  • Publication number: 20230303608
    Abstract: The present invention relates to particles of a compound of formula M (I), wherein M is selected from Ni, Pd and Pt, X1 and X2 are each independently of each other sulfur or oxygen, R1, R2, R3, and R4 are independently selected from an unsubstituted, or substituted al- kyl group, an unsubstituted, or substituted cycloalkyl group, an unsubstituted or substi- tuted aryl group and an unsubstituted or substituted heteroaryl group, wherein the particles have a median particle size (D50) in the range of from 30 nm to 90 nm, preferably from 40 nm to 80 nm, more preferably 50 to 70 nm with D10 being greater than 20 nm, especially greater than 25 nm, very especially greater than 30 nm, their use as almost colourless IR absorbers, for optical filter applications, especially for plasma display panels, or for laser welding of plastics. The compounds may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and are particularly well-suited for security applications.
    Type: Application
    Filed: July 9, 2021
    Publication date: September 28, 2023
    Inventors: Hans REICHERT, Oliver SEEGER, Helmut REICHELT, Korinna DORMANN, Holger LEYBACH
  • Publication number: 20230295439
    Abstract: The present invention relates to particles of naphthalocyanine and phthalocyanine chromophores of formula (I) having a number average particle size in the range of from 10 nm to 80 nm with standard deviation being less than 40 nm, their use as almost colourless IR absorbers, for optical filter applications, especially for plasma display panels, or for laser welding of plastics. The compounds may be used in compositions for inks, paints and plastics, especially in a wide variety of printing systems and are particularly well-suited for security applications.
    Type: Application
    Filed: June 22, 2021
    Publication date: September 21, 2023
    Inventors: Holger LEYBACH, Hans REICHERT, Oliver SEEGER, Korinna DORMANN, Helmut REICHELT
  • Patent number: 7959727
    Abstract: The present invention relates to pigments, the particles of which generally have a length of from 2 ?m to 5 mm, a width of from 2 ?m to 2 mm, and a thickness of from 20 nm to 2 ?m, and a ratio of length to thickness of at least 2:1, wherein the particles contain a core of SiO2 or a silicon/silicon oxide obtained by heating SiOy flakes with 1.1?y?1.8 in an oxygen-free atmosphere at a temperature of at least 400° C., which core has a narrow distribution of particle sizes and two substantially parallel faces, the distance between which is the shortest axis of the core, and a material layer having a high index of refraction a metal oxide; a process for their production and their use in paints, ink-jet printing, for dyeing textiles, for pigmenting coatings (paints), printing inks, plastics, cosmetics, glazes for ceramics and glass.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: June 14, 2011
    Assignee: BASF SE
    Inventors: Patrice Bujard, Holger Leybach
  • Publication number: 20090169499
    Abstract: The present invention relates to pigments, the particles of which generally have a length of from 2 ?m to 5 mm, a width of from 2 ?m to 2 mm, and a thickness of from 20 nm to 2 ?m, and a ratio of length to thickness of at least 2:1, wherein the particles contain a core of SiO2 or a silicon/silicon oxide obtained by heating SiOy flakes with 1.1?y?1.8 in an oxygen-free atmosphere at a temperature of at least 400° C., which core has a narrow distribution of particle sizes and two substantially parallel faces, the distance between which is the shortest axis of the core, and a material layer having a high index of refraction a metal oxide; a process for their production and their use in paints, ink-jet printing, for dyeing textiles, for pigmenting coatings (paints), printing inks, plastics, cosmetics, glazes for ceramics and glass.
    Type: Application
    Filed: February 26, 2009
    Publication date: July 2, 2009
    Inventors: Patrice Bujard, Holger Leybach
  • Patent number: 7517404
    Abstract: The present invention relates to pigments, the particles of which generally have a length of from 2 ?m to 5 mm, a width of from 2 ?m to 2 mm, and a thickness of from 20 nm to 2 ?m, and a ratio of length to thickness of at least 2:1, wherein the particles contain a core of SiOy with 0.70?y?1.8, especially 1.40?y?1.8, having two substantially parallel faces, the distance between which is the shortest axis of the core, comprising (a) a material, especially a metal oxide, having a high index of refraction; or (a) a thin semi-transparent metal layer; a process for their production and their use in paints, ink-jet printing, for dyeing textiles, for pigmenting coatings (paints), printing inks, plastics, cosmetics, glazes for ceramics and glass.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: April 14, 2009
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Patrice Bujard, Holger Leybach
  • Publication number: 20080072794
    Abstract: The present invention is directed to SiOy flakes with 0.70?y?1.95, especially 0.70?y?1.80, very especially 1.0?y?1.8, comprising reactive centres, a process for their production, and their use for providing chemically modified SiOy flakes.
    Type: Application
    Filed: July 18, 2005
    Publication date: March 27, 2008
    Inventors: Holger Hoppe, Patrice Bujard, Holger Leybach, Hans Reichert
  • Patent number: 7273522
    Abstract: The present invention relates to plane-parallel structures of silicon/silicon oxide (silicon/silicon oxide flakes), obtainable by heating plane-parallel structures of SiOy in an oxygen-free atmosphere at a temperature above 400° C., wherein 0.70?y?1.8, or plane-parallel structures of silicon/silicon oxide, obtainable by heating plane-parallel structures of SiOx in an oxygen-free atmosphere at a temperature above 400° C., wherein 0.03?x?0.95, a process for their production and their use for the production of interference pigments.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: September 25, 2007
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Patrice Bujard, Holger Leybach, Hilmar Weinert
  • Publication number: 20060042507
    Abstract: The present invention relates to pigments, the particles of which generally have a length of from 2 ?m to 5 mm, a width of from 2 ?m to 2 mm, and a thickness of from 20 nm to 2 ?m, and a ratio of length to thickness of at least 2:1, wherein the particles contain a core of SiOy with 0.70?y?1.8, especially 1.40?y?1.8, having two substantially parallel faces, the distance between which is the shortest axis of the core, comprising (a) a material, especially a metal oxide, having a high index of refraction; or (a) a thin semi-transparent metal layer; a process for their production and their use in paints, ink-jet printing, for dyeing textiles, for pigmenting coatings (paints), printing inks, plastics, cosmetics, glazes for ceramics and glass.
    Type: Application
    Filed: October 7, 2003
    Publication date: March 2, 2006
    Inventors: Patrice Bujard, Holger Leybach
  • Publication number: 20050252410
    Abstract: The present invention relates to plane-parallel structures of silicon/silicon oxide (silicon/silicon oxide flakes), obtainable by heating plane-parallel structures of SiOy in an oxygen-free atmosphere at a temperature above 400° C., wherein 0.70?y?1.8, or plane-parallel structures of silicon/silicon oxide, obtainable by heating plane-parallel structures of SiOx in an oxygen-free atmosphere at a temperature above 400° C., wherein 0.03?x?0.95, a process for their production and their use for the production of interference pigments.
    Type: Application
    Filed: June 16, 2003
    Publication date: November 17, 2005
    Inventors: Patrice Bujard, Holger Leybach, Hilmar Weinert