Two-component polyurethane coating composition with anti-corrosive properties

US6169141A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Gerald Kurek · Leverkusen, DE
• Jurgen Schwindt · Leverkusen, DE
• Peter Jahn · Leverkusen, DE

Key dates

• Filing date: May 13, 1999
• Grant date: Jan 2, 2001
• Expiry date: May 13, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2150/90
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a coating composition containing: PA0 A) 25 to 50 wt. % of a polyisocyanate component, PA0 B) 5 to 20% wt. % of one or more polyaspartic acid esters PA0 C) 10 to 30 wt. % of one or more polyaldimines having a number average molecular weight of 112 to 600 PA0 D) 0.1 to 5.0 wt. % of an acetal corresponding to formula IV: ##STR1## PA0 E) 0.1 to 5.0 wt. % of castor oil. PA0 F) 0.1 to 10.0 wt. % of an organic solvent, PA0 G) 15 to 35 wt. % of a pigment and PA0 H) 0 to 10 wt. % of a coating additive other than D, F or G, wherein the sum of the percentages of components A to H is 100. The present invention also relates to the use of this coating composition as an anti-corrosive top coat.