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:
Sep. 12, 1978
Filed:
May. 20, 1977
Theodor Papenfuhs, Frankfurt am Main, DE;
Heinrich Volk, Bad Vilbel, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
New metal-complex disazomethine compounds of the formulae ##STR1## WHEREIN R is a single bond, a straight-chained or branched alkylene radical which may be interrupted by one or more hetero atoms, such as 1, 2, 3 or 4 moieties selected from a group consisting of isocyclic and heterocyclic ring and other bivalent group, or is a cycloalkylene radical, an arylene or a heterocyclic radical, Z is a group capable of forming metal complexes, X is a carboxylic acid group, carboxylic acid ester group, an optionally substituted carboxylic acid amide or carboxylic acid hydrazide group and M is a bivalent metal atom, had been found which are very well suitable as colorants, especially as pigments, for example, for coloring plastic masses, paints, lacquers, for the use in spin-dyeing of viscose and cellulose acetate, for coloring printing pastes in graphic industry and paper masses, and have a high tinctorial strength, a good transparency, pure shades, excellent fastness to migration, to overvarnishing to light, to weather, to solvents and to heat, corresponding to the material colored with them.