Patent ID: 9090736
Filing Date: 2015-07-28
Classification: C07C,C08F,C08G,C08K,C09D

Abstract:
1. A rheological assistant comprising at least one (meth)acrylate group and connected thereto at least one urea group of the formula (I) in which R (a1) at least one polyisocyanate based on aliphatic and/or cycloaliphatic diisocyanates, the polyisocyanate comprising an isocyanato acrylate containing allophanate group, (a2) at least one compound having at least one group reactive toward isocyanate groups, and at least one free-radically polymerizable C═C double bond, wherein the at least one compound having at least one group reactive toward isocyanate groups reacts with the at least one polyisocyanate such that the at least one group having at least one group reactive toward isocyanate groups is attached via the isocyanato acrylate containing allophanate group of the at least one polyisocyanate, (a3) optionally at least one compound having at least two groups reactive toward isocyanate groups and selected from hydroxyl, mercapto, primary and/or secondary amino groups, having a number-average molar weight M (a4) optionally at least one compound having at least two groups reactive toward isocyanate groups and selected from hydroxyl, mercapto, primary and/or secondary amino groups, having a number-average molar weight M (a5) at least one amine of the formula (III) (a6) optionally at least one compound which is different from (a2) and (a5) and which has precisely one group reactive toward isocyanate groups, and (a7) optionally at least one polyisocyanate different from (a1).