Phosphonate-containing two-component coating system and the production and use thereof

US8138249B2 · kind B2 · utility

Assignees

• BASF Coatings Japan Ltd. · JP
• BASF COATINGS GMBH · DE

Inventors

• Hitoshi Taniguchi · Yokohama, JP
• Eishi Tsukamoto · Yokohama, JP
• Hiroyuki Takagi · Yokohama, JP
• Andreas Poppe · Clüversborstel, DE
• Sabine Holtschulte · Ascheberg, DE
• Julia Melzer · Hachenburg, DE
• Petra Wagner · Trostberg, DE
• Bjoern Feldmann · Munster, DE

Key dates

• Filing date: Mar 20, 2008
• Grant date: Mar 20, 2012
• Expiry date: Mar 20, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L33/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to two-component coating systems comprising as component (a) one or more polyisocyanates, as component (b) one or more oligomeric and/or polymeric compounds that are reactive with component (a), and as component (c) one or more phosphonates selected from the group of phosphonic diesters and diphosphonic diesters, where (i) component (b) comprises all oligomeric and/or polymeric compounds that are present in the two-component coating system and are reactive with component (a) and (ii) component (b) contains not more than 15% by weight, based on the total weight of component (b), of oligomeric and/or polymeric compounds which carry isocyanate-reactive amino groups. Additionally provided by the invention are a process for preparing the two-component coating systems, and the use of these coating systems as a clearcoat, more particularly for multicoat automobile finishing.