| abstract |
In the present invention, a) R is a C 4 -C 19 -hydrocarbon group, R 1 is a tertiary C 4 -C 19 -hydrocarbon group or a C 1 C 19 -hydroxy hydrocarbon group, R 2 Is H, a C 1 -C 14 -hydrocarbon group or a C 1 C 14 -hydroxy hydrocarbon group, one or more solvents represented by R-CO-NR 1 R 2 , and b) 1 or It relates to a surfactant / solvent mixture comprising a further surfactant. |