TWO-COMPONENT POLYURETHANE COATING COMPOSITION WITH ANTI-CORROSIVE PROPERTIES

摘要

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 (see formula I) 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.