Process for improving the light fastness of polyamide dyeings
AssigneeBayer Aktiengesellschaft
InventorsKlaus-Peter Heise, Robert Kuth, Karl Neufang, Hellmuth Pantke, Karlfried Wedemeyer
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Abstract
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.
Claims8
In the improvement of the lightfastness of a dyed polyamide textile material by applying to the textile material before, during or after dyeing a fastness improver, the improvement wherein such fastness improver consists essentially of a copper complex of an optionally ring substituted compound of the formula ##STR7## in which R is H, OH, alkyl or cycloalkyl.
Dependencies are inferred from the claim text.