Aqueous dye preparations

US5891227A · kind A · utility

Assignee

• BASF SE

Inventors

• Dietrich Hoffmann · Schramberg, DE
• Ulrike Schlosser · Ludwigshafen, DE
• Erwin Czech · Biblis, DE
• Walter Kurtz · Bad Dürkheim, DE
• Karin H. Beck · Ludwigshafen, DE
• Doug R. Campbell · Malone, US
• Helmut Bellaire · Ludwigshafen, DE
• Horst Belde · Ludwigshafen, DE

Key dates

• Filing date: Aug 14, 1997
• Grant date: Apr 6, 1999
• Expiry date: Aug 14, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D11/17
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

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.