Metallic pigment preparation in compacted form, method for producing the same and use thereof

US8552070B2 · kind B2 · utility

Assignee

• ECKART GmbH · DE

Inventors

• Alexander Albrecht · Albuquerque, US
• Kerstin Sperner · Bayreuth, DE

Key dates

• Filing date: Aug 18, 2009
• Grant date: Oct 8, 2013
• Expiry date: Feb 2, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K9/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A pigment preparation with metallic effect pigments in compacted form, the pigment preparation including the following components: a) 60%-95% by weight of at least one metallic effect pigment which has at least one low-refractive-index layer (low-index layer) on the metallic core of the metallic effect pigment, the low-index layer comprising or consisting of at least one inorganic component, b) 0.5%-40% by weight of a binder which is free from styrene groups, has an acid number of 150-500 mg KOH/g binder, and a melting point or melting range which lies in the range of 120-200° C., c) a residual moisture content in the range of 0%-15% by weight of at least one of water, organic solvent and a solvent mixture and d) optionally neutralizing agent(s). The disclosure further relates to a method for producing the pigment preparation and also to the use thereof.