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:
Apr. 06, 1999
Filed:
Aug. 14, 1997
Dietrich Hoffmann, Rodersheim-Gronau, DE;
Ulrike Schlosser, Ludwigshafen, DE;
Erwin Czech, Biblis, DE;
Walter Kurtz, Bad Durkheim, DE;
Karin Heidrun Beck, Ludwigshafen, DE;
Doug R Campbell, West Sandlake, NY (US);
Helmut Bellaire, Ludwigshafen, DE;
Horst Belde, Ludwigshafen, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
Aqueous dye preparations useful for producing inks for the inkjet process or writing inks or for producing aqueous alcoholic coating or printing colors comprise, based on the weight of the preparation, from 0.1 to 15% by weight of a dye quantity comprising from 90 to 100% by weight of the dye of the formula I ##STR1## where Kat.sup..sym. is the equivalent of a metal or ammonium ion, from 1 to 40% by weight of carbon black and from 0.1 to 15% by weight of polyethylene glycol.