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:
Oct. 12, 1976
Filed:
Nov. 21, 1973
Applicant:
Inventor:
Klaus Artz, Muttenz, CH;
Assignee:
Ciba-Geigy AG, Basel, CH;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
260162 ; 260156 ; 260158 ; 260160 ; 260163 ;
Abstract
An azo compound free of sulphonic acid groups, of the formula ##SPC1## Wherein B is the radical of a coupling component of the phenol or naphthol, pyrazolone, pyridone, aminopyrazole, enolisable keto compound or alkylaniline series and Y is a sulphur atom or a nitrogen atom, R represents a hydrocarbon radical or a hydrogen atom, and n =1 or 2, n being 1 if Y= --S-- and n being 2 if Y= --N=, and wherein the ring D can carry yet further substituents and the dyestuff molecule contains at least one carboxyl group, and useful in dyeing and printing leather, wool, silk and synthetic fibers such as acrylic, acrylonitrile, polyamide and especially aromatic polyester fibers.