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. 17, 1992
Filed:
Nov. 19, 1990
Applicant:
Inventor:
Dieter Mausezahl, Biel-Benken, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09B / ;
U.S. Cl.
CPC ...
8641 ; 8639 ; 8683 ; 8690 ; 8924 ; 8929 ; 8917 ;
Abstract
The invention relates to a dye mixture containing a dye of the formula ##STR1## in which R.sub.1 is methyl or ethyl and at least one dye of the formulae (2) and (3) ##STR2## in which D is substituted or unsubstituted phenyl, thiophenyl or benzothiazolyl, R.sub.2 is C.sub.1 -C.sub.8 alkyl, R.sub.3 is substituted or unsubstituted C.sub.1 -C.sub.8 alkyl, and R.sub.4 is hydrogen or C.sub.1 -C.sub.4 alkyl, and ##STR3## in which R.sub.5 is C.sub.1 -C.sub.4 alkyl. The dye mixture is distinguished by generally good properties, in particular by good exhaustion.