Patents by Inventor Horst Curtius

Horst Curtius 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: 4212648
    Abstract: Process for printing textile cellulose fiber fabrics with printing pastes containing coupling components dissolved in an alkaline medium, sodium nitrite and diazotizable primary aromatic amines, in which process the amines are used as a solution or in the form of an aqueous fine dispersion with a particle size of less than 0.03 mm and are selected in a manner such that they are paractically non-volatile under at the drying temperatures and show a minimum basicity degree with the pK.sub.a being 2.2 or more, developing the water-insoluble azo dyestuffs on the fiber by diazotizing the amines and coupling the diazonium compound formed with the coupling components following the drying of the printing pastes applied by a treatment of the printed fabrics at room temperature with an aqueous developing bath containing formic acid, and completing the coupling without a previous intermediate drying of the fabric, however, optionally following an air passage, by a short-time steaming with saturated steam.
    Type: Grant
    Filed: September 7, 1978
    Date of Patent: July 15, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Horst Curtius, Erich Feess, Willy Gronen
  • Patent number: 4212646
    Abstract: Process for printing textile mixed fabrics of polyester and cellulose fibers with printing pastes containing coupling components dissolved in an alkaline medium, sodium nitrite, diazotizable primary aromatic amines and optionally disperse dyestuffs, in which process the amines are used as a solution or in the form of an aqueous fine dispersion with a particle size of less than 0.03 mm and are selected in a manner that they are practically non-volatile at the drying temperatures and exhibit minimum basicity with the pK.sub.a being 2.
    Type: Grant
    Filed: September 7, 1978
    Date of Patent: July 15, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Horst Curtius, Erich Feess, Willy Gronen
  • Patent number: 4201547
    Abstract: Azo developing dyestuffs are produced by diazotizing on the fiber a mono- to tetramine derived from a metal-containing or metal-free phthalocyanine, the amino group(s) being bound to a phenyl or naphthyl group (which may be substituted) which is linked via a bridge member to the phthalocyanine which may further contain up to 3 optionally substituted sulfon amide groups and up to 3 sulfo groups, and coupling said diazotized amino onto azoic coupling components usual for preparing developing dyestuffs.
    Type: Grant
    Filed: March 20, 1978
    Date of Patent: May 6, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Erich Feess, Hartmut Springer, Paul Karacsonyi, Willy Gronen, Horst Curtius
  • Patent number: 4195973
    Abstract: o-Aminophenol ethers deriving from lower alkylene glycols, lower alkylene polyglycols and the corresponding mono-lower alkyl ethers which may be substituted in the phenyl nucleus by halogen or nitro, are useful as diazo components in the "all-in" printing process for preparing developing dyes on cellulose. In this process the printing paste contains the alkaline solution of the coupling component, a dispersion of the amine, sodium nitrite and a thickening composition and developing of the dye is brought about with acidic means, followed by or combined with a heat treatment.
    Type: Grant
    Filed: November 6, 1978
    Date of Patent: April 1, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hasso Hertel, Horst Curtius, Erich Feess, Paul Karacsonyi