COMPOSITIONS CONTAINING URETDIONE GROUPS CROSSLINKING AT LOW TEMPERATURES

The invention relates to compositions containing A) at least one component having at least one uretdione group, B) at least one component having at least one hydroxyl group, C1) of at least one catalyst, containing a structural element of the general formula (I) and/or (II), wherein R1, R2, R3, R4, R5 and R6 independently of each other represent the same or different radicals meaning saturated or unsaturated, linear or branched, aliphatic, cycloaliphatic, araliphatic or aromatic organic radicals with 1 to 18 carbon atoms that are substituted or unsubstituted and/or have heteroatoms in the chain, the radicals being capable of forming, even when combined with each other and optionally together with an additional heteroatom, rings with 3 to 8 carbon atoms that can optionally be further substituted, wherein R3, R4, R5 and R6 independently of each other can also represent hydrogen, and R7 represents hydrogen or a carboxylate anion (COO−), and C2) at least one catalyst containing at least one N,N,N′-trisubstituted amidine structure and having an amidine group content (calculated as CN2; molecular weight=40) of 12.0 to 47.0 wt.-%.