Method for the production of high-impact layers

US9492843B2 · kind B2 · utility

Assignees

• BASF COATINGS GMBH · DE
• UNIVERSITÉ BLAISE PASCAL · FR

Inventors

• Horst Hintze-Brüning · Hachenburg, DE
• Hans-Peter Steiner · Rheinfelden, CH
• Fabrice Leroux · Cournon-d'Auvergne, FR
• Anne-Lise Troutier · Clermont-Ferrand, FR

Key dates

• Filing date: Nov 6, 2008
• Grant date: Nov 15, 2016
• Expiry date: Nov 6, 2028

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05D2601/20
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a method of increasing the stonechip resistance of OEM coat systems composed of an anticorrosion coat, a surfacer coat, and a concluding topcoat, in which 0.1% to 30% by weight, based on the nonvolatile fractions of the coating material, of electrically charged inorganic particles AT whose ratio D/d, the ratio of the average particle diameter (D) to the average particle thickness (d), is >50 and whose charge is at least partly compensated by singly charged organic counterions OG, are incorporated into the coating material that is used to produce at least one of said coats and that comprises at least one polymer P, and the coating material is applied and, lastly, is cured.