Lacquering process using nacreous pigments

US4668570A · kind A · utility

Assignees

• MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE
• Herberts Gesellschaft mit beschrankter Haftung · DE

Inventors

• Reiner Esselborn · Darmstadt, DE
• Klaus Ambrosius · Frankfurt, DE
• Hans-Joachim Graetz · Wuppertal, DE
• Manfred Letsch · Wuppertal, DE

Key dates

• Filing date: Jun 19, 1986
• Grant date: May 26, 1987
• Expiry date: Jun 19, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/256
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Base lacquers suitable for use in multi-layer lacquerings containing a layer of base lacquer and a layer of clear lacquer on top of this, contain a nacreous pigment based on mica flakes coated with metal oxides, wherein the nacreous pigments have a particle size substantially in the range between 5 and 25 .mu.m. The resultant lacquerings have advantageous properties.