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:
Jul. 05, 1977
Filed:
Feb. 21, 1975
Applicant:
Inventors:
Visvanathan Ramanathan, Basel, CH;
Angelo Della Casa, Basel, CH;
Rene DE Montmollin, Riehen, CH;
Gert Hegar, Schonenbuch, CH;
Hans Ulrich Schutz, Basel, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
260153 ; 260154 ; 260156 ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 2602498 ; 2602 / ; 2602 / ; 26029369 ; 2602949 ; 2602 / ; 2602 / ; 2602 / ; 2602 / ; 8 41 / ; 8 50 ; 8 51 ;
Abstract
Water-soluble azo dyes of the formula WHEREIN Y is a fiber-reactive group, n is 1 or 2, m is 0, 1 or 2 and the benzene rings A and B may be further substituted are disclosed. They are useful for dyeing nitrogen-containing fibers and cellulose materials and are distinguished by very bright and brilliant shades, possessing good stability, fastness to light, wet processing and fixation.