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. 16, 1999
Filed:
Jul. 31, 1997
Applicant:
Inventors:
Bernhard Medinger, Grottenweg, CH;
Daniel Andrey, Chatel-St-Denis, CH;
Assignee:
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
524190 ; 106496 ; 534588 ; 534820 ;
Abstract
A process for the preparation of diazo pigment mixtures, which comprises condensing 2 mol of an azocarboxylic acid chloride of formula ##STR1## with 1 mol of a mixture of diamines of formulae ##STR2## at a molar ratio of II:III:IV from 0-30:5-60:40-95, the condensation and isolation of the product obtained being carried out by customary methods. The diazo pigment mixtures so obtained are distinguished by high color strength and chroma.