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. 03, 1981
Filed:
Mar. 19, 1979
Applicant:
Inventors:
Wolfgang Bauer, Maintal, DE;
Joachim Ribka, Offenbach am Main-Burgel, DE;
Assignee:
Cassella Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
260158 ;
Abstract
A water-soluble monoazo dyestuff useful for dyeing or printing natural or synthetic material containing hydroxyls and nitrogen has the formula ##STR1## or a tautomeric form thereof, wherein R.sup.1 is methyl, ethyl or 6-methyl-7-sulphobenzthiazol-2-yl, R.sup.2 is methyl, methoxy or ethoxy, R.sup.3 is methyl or ethyl, R.sup.4 and R.sup.5 may be the same or different and are hydrogen, methyl or ethyl, M is hydrogen, alkali metal or ammonium and n is 0 or 1.