Aqueous pigment preparations

US6478866B1 · kind B1 · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Peter-Roger Nyssen · Dormagen, DE
• Wolfgang Zarges · Neunburg vorm Wald, DE
• Achim Brand · Neunburg vorm Wald, DE
• Thomas Roick · Leverkusen, DE
• Hans Geiger · Gettorf, DE

Key dates

• Filing date: Aug 14, 2000
• Grant date: Nov 12, 2002
• Expiry date: Aug 14, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S516/909
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Aqueous pigment preparations containing a) at least one pigment, b) at least one condensation product based on A) suphonated aromatics, B) aldehydes and/or ketones and optionally C) one or several compounds selected from the group of non sulphonated aromatics, urea and urea derivatives, and c) at least one polyether polyol with a boiling point of above 150° C., at normal pressure. The inventive preparations are highly suitable for pigmenting natural or synthetic materials.