Patent Number: 6,169,141

Title: Two-component polyurethane coating composition with anti-corrosive properties

Abstract: The present invention relates to a coating composition containing: A) 25 to 50 wt. % of a polyisocyanate component, B) 5 to 20% wt. % of one or more polyaspartic acid esters C) 10 to 30 wt. % of one or more polyaldimines having a number average molecular weight of 112 to 600 D) 0.1 to 5.0 wt. % of an acetal corresponding to formula IV: ##STR1## E) 0.1 to 5.0 wt. % of castor oil. F) 0.1 to 10.0 wt. % of an organic solvent, G) 15 to 35 wt. % of a pigment and 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.

Inventors: Kurek; Gerald (Leverkusen, DE), Schwindt; Jurgen (Leverkusen, DE), Jahn; Peter (Bergisch Gladbach, DE)

Assignee: Bayer Aktiengsellschaft

International Classification: C08G 18/38 (20060101); C08G 18/32 (20060101); C08G 18/00 (20060101); C08G 18/79 (20060101); C09D 175/04 (20060101); C08J 003/00 (); C08K 003/20 (); C08L 075/00 ()

Expiration Date: 01/02/2018