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:
Jun. 29, 1976
Filed:
Dec. 12, 1974
Applicant:
Inventors:
Fritz Oesterlein, Basel, CH;
Henri Riat, Arlesheim, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ;
U.S. Cl.
CPC ...
260153 ; 260185 ; 260198 ;
Abstract
Fiber-reactive tetrazo dyes of the formula ##SPC1## Wherein each of D.sub.1 and D.sub.2 represents a benzene residue which contains at least one sulphonic acid group, one of the two substituents Y.sub.1 and Y.sub.2 represents the HO group and the other represents the H.sub.2 N group, X represents a halogen atom and B represents a benzene residue which is devoid of sulphonic acid groups, are suitable dyes for dyeing and printing materials of the most diverse kind, especially for dyeing of cellulosic materials of fibrous structure by the exhaustion process. The dyes are characterized by increased reactivity and high degree of fixation.