Binder with cyclic carbonate structures

Abstract

The invention relates to a method for producing polyurethanes containing cyclic carbonate structures by reacting at least A) a composition containing a) one or more compounds of the general formula (I), said compounds containing isocyanate groups and cyclic carbonate structures, and b) <=1 wt. %, based on the total mass of the composition A), of one or more monomer diisocyanates with aliphatically, cycloaliphatically, araliphatically, and/or aromatically bound isocyanate groups of the general formula (II), wherein R represents hydrogen or a saturated or unsaturated, linear or branched, aliphatic group with 1 to 7 carbon atoms, X represents a linear or branched organic group which comprises 1 to 36 carbon atoms and which can contain optionally ether, ester, and/or carbonate groups, n represents 0 or 1, and Y represents a linear or branched, aliphatic or cycloaliphatic group with 4 to 18 carbon atoms or an optionally substituted aromatic or aliphatic group with 6 to 18 carbon atoms, with B) an at least difunctional polyol with a number-average molecular weight Mn of 62 to 22000 g/mol, preferably 90 to 12000 g/mol, while maintaining an equivalent ratio of isocyanate groups to hydroxyl groups of 0.3:1 to 1.2:1. Furthermore, the invention relates to products which can be obtained using the method according to the invention. The invention additionally relates to the use of the products which can be obtained using the method according to the invention as a starting component in the production of crosslinkable binders, such as paints and raw materials for sealants or adhesives.