Process for improving the fastness to light of polyamide dyeings

Abstract

Abstract 1. Process for improving the light fastness of dyeings on polyamide fibre materials by using copper compounds, characterized in that the copper compounds used are the 1:2 complexes of aromatic hydroxycarbonyl compounds of the formula (I) see diagramm : EP0252386,P7,F2 wherein R1 and R2 independently of each other denote H, OH or OW and X1 -X8 independently of one another denote H, W, OH, halogen, CN, NH2 , NVW, SO3 H, COOH, COOW, CONVW or CONH2 and two adjacent radicals X1 -X8 can also together form the remaining members of a fused-on benzene ring, where W represents C1 -C18 alkyl and V represents W or H, subject to the proviso that the 2nd order substituents mentioned above for X1 -X8 appear at most twice in a benzene radical.

Inventors

• 👤 Thomas Dr. Scholl
• 👤 Klaus-Peter Dr. Heise
• 👤 Hans-Albert Dipl.-Ing. Ehlert

Bibliographic Details