Pigment preparation

US6648956B1 · kind B1 · utility

Assignee

• MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE

Inventors

• Wolfgang Hechler · Herbstein, DE
• Gerhard Herget · Ober-Ramstadt, DE
• Brigitte Husseini · Darmstadt, DE
• Sabine Schoen · Darmstadt, DE

Key dates

• Filing date: Nov 20, 2000
• Grant date: Nov 18, 2003
• Expiry date: Nov 20, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2991
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a nondusting, solvent-containing homogeneous pigment preparation that includes≧70% by weight of one or more effect pigments0.1-30% by weight of an organic solvent or solvent mixture having an evaporation number (EN) of 10 to 100 and a surface tension (ST) of ≦35 mN/mand optionally0-5% by weight of a surface-active substance.