abstract |
The present invention relates to at least one urea-based compound (A) having a number average molecular weight (Mn) between 350 g/mol and 30000 g/mol and at least one N-substituted caprolactam derivative according to formula (I) (B ) to a composition comprising: wherein R 1 is an organic group having 1 to 2 carbon atoms, wherein R 1 contains no oxygen atoms linked by a single bond. |