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:
Apr. 05, 1977
Filed:
Nov. 12, 1973
Applicant:
Inventors:
Hans Wilhelm Liechti, Oberwil, CH;
Jurgen Markert, Basel, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
D06P / ;
U.S. Cl.
CPC ...
8 41 / ; 8 41 / ; 8 41 / ;
Abstract
A process for dyeing synthetic textile material in a halogenated hydrocarbons solvent by the exhaust process, comprising the use, for dyeing, of azopyridone dyestuffs of formula I ##STR1## wherein R.sub.1 and R.sub.2 each independently represent hydrogen, or an optionally substituted lower alkyl, lower alkenyl, cycloalky or aryl radical, or