| 摘要 |
Compounds and mixtures of compounds obtainable by condensation of sulphonation products of defined alkyl-substituted naphthalenes and sulphonation products of optionally alkyl-substituted diphenylethers with formaldehyde and optionally treated with further components, are valuable interface-active compounds suitable as assistants in various application fields, in particular as dispersing or levelling agents in the dyeing with disperse dyes or as tanning-assistants or dyeing-assistants for leather. The compounds may be in free acid form or in salt form, wherein the cation may be selected from alkali metal, alkaline earth metal, e.g. Mg<++>, bivalent transition metals of the fourth row of the periodic system of elements, e.g. Mn<++>, Co<++>, Ni<++> and/or Cu<++>, and/or ammonium cations.
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