Pasty pigment formulations, the preparation and use thereof

US4773937A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Manfred Schneider · Lichtenfels, DE
• Christa Uhde · Kriftel, DE
• Manfred Zimmermann · Monheim, DE

Key dates

• Filing date: Dec 5, 1986
• Grant date: Sep 27, 1988
• Expiry date: Dec 5, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B67/006
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to pasty pigment formulations of pigments of the arylpararosanilinesulfonic acid series, which are free of aromatics-containing mineral oils and are suitable for preparing printing inks, in particular letterpress and offset printing inks. The pigment formulations are obtainable by flushing aqueous presscakes of the pigments by means of the solution of a flushing resin in aromatics-free mineral oil and preparing the flushed paste obtained with an oil- or fatty-acid modified alkyd resin.