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:
Mar. 26, 1985
Filed:
Jun. 20, 1983
Alois Puntener, Rheinfelden, CH;
Fabio Beffa, Riehen, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
The dyes of the formula I ##STR1## in which Me is cobalt or chromium, A and A' independently of each other are each the radical of an amine of the benzene series which carries the hydroxyl group in the o-position relative to the azomethine group, Ar.sub.1 and Ar.sub.3 independently of each other are each a substituted or unsubstituted phenylene or naphthylene radical, Ar.sub.2 and Ar.sub.4 independently of each other are each a substituted or unsubstituted benzene or naphthalene radical, m and n independently of each other are each 0 or 1, p is an integer from 3 to 6 and Ka.sym. is a cation, are suitable for dyeing polyamides, particularly wool and leather.