Coating compounds with polyisocyanates containing allophanate groups

Mixture comprises (a) at least one allophanate group-containing polyisocyanate (I), (b) at least one isocyanurate group-containing polyisocyanate based on isophorone diisocyanate and (c) at least one hydroxy group-containing styrene-(meth)acrylate copolymer, which has an acid number according to DIN EN ISO 3682 of not more than 5 mg potassium hydroxide (KOH)/g, and the molar ratio of (b) to (a) is more than 1:1 and less than 4:1. Mixture comprises (a) at least one allophanate group-containing polyisocyanate of formula (OCN-R1b-NH-C(=O)-N(-R1b-NCO)-C(=O)-(Xi) n-Y1-R1a) (I), (b) at least one isocyanurate group-containing polyisocyanate based on isophorone diisocyanate and (c) at least one hydroxy group-containing styrene-(meth)acrylate copolymer, which has an acid number according to DIN EN ISO 3682 of not more than 5 mg potassium hydroxide (KOH)/g, and the molar ratio of (b) to (a) is more than 1:1 and less than 4:1. R1a : 1-5C alkyl; Xi, when n is greater than 0 for each i of 1 to n, : -CH 2-CH 2-O- (preferred), -CH 2-CH(CH 3)-O-, -CH(CH 3)-CH 2-O-, -CH 2-C(CH 3) 2-O-, -C(CH 3) 2-CH 2-O-, -CH 2-CHVin-O-, -CHVin-CH 2-O-, -CH 2-CHPh-O- or -CHPh-CH 2-O-; Ph : phenyl; Vin : vinyl; n : 0 or a positive number; and R1b : substituted cyclohexyl group of formula (Ia) or (Ib). [Image]. Die vorliegende Erfindung betrifft neue Beschichtungsmassen mit allophanatgruppenhaltigen Polyisocyanaten auf Basis von Isophorondiisocyanat und deren Verwendung.