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:
Nov. 05, 1991
Filed:
Mar. 23, 1990
Applicant:
Inventors:
Erwin Hahn, Heidelberg, DE;
Guenter Hansen, Ludwigshafen, DE;
Karl-Heinz Etzbach, Frankenthal, DE;
Helmut Reichelt, Neustadt, DE;
Ernst Schefczik, Ludwigshafen, DE;
Helmut Degen, Frankenthal, DE;
Reinhold Krallmann, Weisenheim, DE;
Gerhard Wagenblast, Frankenthal, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; D06P / ; D06P / ;
U.S. Cl.
CPC ...
8639 ; 8638 ; 8643 ; 8922 ;
Abstract
Navy and black dye mixtures contain one or more thiopheneazo dyes whose diazo component comes from the 2-aminothiophene series and whose coupling component comes from the aniline series and one or more dyes F whose absorption maximum is at a wavelength of from 390 to 520 nm, the proportion of the thiopheneazo dyes being from 60 to 99% by weight, based on the total weight of the thiopheneazo dyes and the dyes F in the mixture.