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US 5,344,465 AGranted
Colorant mixtures containing azo compounds based on phenyloxadiazolylaniline
AssigneeBASF SE
InventorsHorst Colberg, Joachim Jesse
Life of this patent
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Abstract
A colorant mixture for use in printing inks contains a pigment of formula I ##STR1## a basic dye of the formula II ##STR2## where the substituents are as defined in the specification L-A. and exhibits higher color strength than that of the pigment of formula I alone.
Claims2
A colorant mixture containing a pigment of the formula I ##STR13## where R.sup.1 is hydrogen, bromine
- R.sup.2 is hydrogen,
- R.sup.3 is methyl,
- R.sup.4 is cyano,
- R.sup.5 is hydrogen,
- R.sup.6 is hydrogen;
- and
- a basic dye of the formula II ##STR14## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each as defined above,
- X.sup.1 is
- (CH.sub.2).sub.3 --NH--C.sub.6 H.sub.11 or (CH.sub.2).sub.3 --N(CH.sub.3).sub.3 An,.sym. .crclbar.
- An .crclbar. is an anion and
- X.sup.2 is hydrogen.
8 more elements
Dependencies are inferred from the claim text.