The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 18, 1976
Filed:
Jun. 05, 1972
Applicant:
Inventors:
Hanswilli von Brachel, Offenbach (Main), DT;
Ernst Heinrich, Frankfurt am Main-Fechenheim, DT;
Otto Grawinger, Frankfurt am Main-Fechenheim, DT;
Karl Hintermeier, Frankfurt am Main-Fechenheim, DT;
Horst Kindler, Frankfurt am Main-Fechenheim, DT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; D06P / ; D06P / ; D06P / ;
U.S. Cl.
CPC ...
260156 ; 2602 / ; 2602 / ; 2602 / ; 2602 / ;
Abstract
Water-insoluble monoazo dyes of the formula ##SPC1## Produced by reacting a diazotized amine of the benzene, naphthalene, diphenyl, diphenylmethane or heterocyclic series which is free from water solubilizing groups with the appropriate 6-hydroxy-2-pyridone and the utility thereof for the dyeing and printing of synthetic fabric materials to yellow to red shades having excellent fastness to light and sublimation.