| abstract |
The carrier mixture contains N-alkylphthalimides and compounds of the general formula wherein R is C₁-C₇ alkyl; Phenyl, benzyl or phenylethyl, which can be substituted by C₁-C₄-alkyl, C₁-C₄-alkoxy or C₁-C₄-alkoxycarbonyl, R¹ is hydrogen, C₁-C₄-alkyl, C₁-C₄-alkylcarbonyloxy, hydroxy or C₁-C₄-alkylcarbonyloxy, m 0 or 1, n is 0 or 1, where m and n are not simultaneously 0. |