Bayer Aktiengesellschaft

Hellmuth Pantke

Karl Vogel

Karlfried Wedemeyer

Ulrich Beck

Robert Kuth

Klaus-Peter Heise

Joachim Grutze

Reinhard Preuss

Karl Neufang

The light fastness of dyed polyamide fibre materials, in particular of the type used for manufacturing car seat covers, can be substantially improved by treating these materials, before, during or after the dyeing, with copper compounds of the compounds of the formula ##STR1## wherein R=H, OH, alkyl or cycloalkyl. The compounds (I) are distinguished by low self-colour and good stability to acid conditions.

Process for improving the light fastness of polyamide dyeings

The light fastness of polyamide dyeings can be improved by treating polyamide fibre materials, before, during or after dyeing, with copper complexes of the reaction products of salicylaldehydes with amines (for example cyclohexylamine), or with copper complexes of o-hydroxybenzophenones.

Process for improving the light fastness of polyamide dyeings with

Improving the wet fastness properties of textile materials dyed from organic solvents with adducts of

Agents for improving wet fastness properties

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Leichlingen, Germany

Hellmuth Pantke