Patents by Inventor Christoph Bomba

Christoph Bomba 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).

  • Liquid formulations of direct dyes
    Patent number: 7331998
    Abstract: The present invention relates to aqueous liquid formulations comprising 5-25% by weight of a dye composition comprising 70-95% by weight of a dye obtainable by reduction or thermal treatment of Direct Yellow 11 1-30% by weight of a blue direct dye and 0-20% by weight of a red direct dye (all based on the dye composition) 1-15% by weight of a saturated, cyclic or acyclic water-soluble amine comprising a primary, secondary or tertiary amino group and at least one further functional group selected from primary, secondary and tertiary amino groups, OH groups and ether groups, and 1-30% by weight of urea based on the total weight of the aqueous liquid formulation, wherein the total amount of water-soluble amine and urea does not exceed 40% by weight, and also their use for dyeing cellulose material especially paper.
    Type: Grant
    Filed: November 23, 2004
    Date of Patent: February 19, 2008
    Assignee: BASF Aktiengesellschaft
    Inventors: Juergen Decker, Gero Nordmann, Ingo Klopp, Gunter-Rudolf Schroeder, Helmut Reichelt, Christoph Bomba
  • Liquid formulations of direct dyes
    Publication number: 20050132510
    Abstract: The present invention relates to aqueous liquid formulations comprising 5-25% by weight of a dye composition comprising 70-95% by weight of a dye obtainable by reduction or thermal treatment of Direct Yellow 11 1-30% by weight of a blue direct dye and 0-20% by weight of a red direct dye (all based on the dye composition) 1-15% by weight of a saturated, cyclic or acyclic water-soluble amine comprising a primary, secondary or tertiary amino group and at least one further functional group selected from primary, secondary and tertiary amino groups, OH groups and ether groups, and 1-30% by weight of urea based on the total weight of the aqueous liquid formulation, wherein the total amount of water-soluble amine and urea does not exceed 40% by weight, and also their use for dyeing cellulose material especially paper.
    Type: Application
    Filed: November 23, 2004
    Publication date: June 23, 2005
    Applicant: BASF Akiengesellschaft
    Inventors: Jurgen Decker, Gero Nordmann, Ingo Klopp, Gunter-Rudolf Schroder, Helmut Reichelt, Christoph Bomba
  • Preparation of 2-(4-aminophenyl)benzothiazole compounds
    Patent number: 5371232
    Abstract: A process for preparing a compound of the formula I ##STR1## where R.sup.1 to R.sup.4 are each, independently of one another, hydrogen, alkyl, alkoxy, hydroxyl or halogen, comprises reacting a compound of the formula II ##STR2## with a compound of the formula III ##STR3## in the presence of sulfur or a sulfur donor at elevated temperature. The compounds prepared according to the invention are suitable, for example, as diazo components.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: December 6, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Christoph Bomba, Guido Kuth, Paul Guenthert, Erwin Hahn