Polyesterpolyols having cyclic imide and isocyanurate groups are useful in two component or one component coating compositions for auto repair, vehicle coating or general industrial coating

摘要

Polyesterpolyols having cyclic imide and isocyanurate groups are new. Polyester polyols (I) containing structural units of formula (1), (2) and/or (3) are new. R1 = formula (4)-(12) Independent claims are included for: (1) a process for the preparation of the polyesterpolyols (I) by reaction of an anhydride of trimellitic acid and/or pyromellitic acid with a cyclic lactam, addition of a trishydroxyethylisocyanurate and optionally an alcohol component containing at least one (cyclo)aliphatic 3-10C polyol having a functionality greater than 2, at least one (cyclo)aliphatic 2-18C diol and optionally at least one (cyclo)aliphatic or araliphatic monofunctional 1-18C alcohol as well as an acid component containing at least one difunctional carboxylic acid or their anhydride and/or at least one polyfunctional carboxylic acid or their anhydride and optionally at least one monocarboxylic acid to form a hydroxyfunctional polyester; as well as optionally addition of an isocyanate component (2) an aqueous or solvent borne binding agent (II) containing a polyesterpolyol (I); (3) a coating agent (III) containing a polyesterpolyol (I); (4) a process for the preparation of the coating agent (III) by addition of a hardener and optionally other binding agents to the binding agent (II); (5) a process for the production of coated substrates by use of the coating agent (III); (6) a process for the adhesion of substrates by use of the coating agent (III) and; (7) substrates having a coating containing the cross-linked polyesterpolyols (I).