Encapsulated pigments

US7479323B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Thomas Rathschlag · Weilburg, DE
• Veronika Hochstein · Bruchsal, DE
• Carsten Griessmann · Groß-Zimmern, DE
• Sabine Schoen · Darmstadt, DE

Key dates

• Filing date: Sep 27, 2004
• Grant date: Jan 20, 2009
• Expiry date: Sep 27, 2024

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2998
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Described are encapsulated pigments having an outer water-soluble shell and a core containing organic and/or inorganic pigments and optionally solvents and/or conventional additives. The encapsulated pigments have very good dissolution rates in aqueous systems and are therefore particularly suitable for paints, coatings, printing inks, in papermaking and in cosmetic formulations.