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:
Jul. 31, 1984
Filed:
May. 10, 1983
Applicant:
Inventors:
Willy Stingelin, Reinach, CH;
Peter Loew, Munchenstein, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06P / ;
U.S. Cl.
CPC ...
8436 ; 8539 ; 8644 ; 8688 ; 8918 ; 8919 ; 8922 ; 8924 ; 8927 ; 524400 ; 524417 ;
Abstract
A mixture of cationic compounds of the formulae ##STR1## is obtained by reaction of a compound of the formula ##STR2## with an aldehyde of the formula II ##STR3## in an aqueous or organic medium, in the presence of an acid, in which formulae, the symbols have the meanings defined in claim 1. The mixtures obtained are suitable in particular for the dyeing of paper, whereby neutral-yellow dyeings are obtained.