Process for the photochemical stabilization of undyed and dyed p

Details Process for the photochemical stabilization of undyed and dyed p Process for the photochemical stabilization of undyed and dyed p

1989-09-27

1991-02-05

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Color protecting process for dyed product

8529, 8531, 8602, 8607, 8608, 8624, 8924, 8926, C07F 108, D06P 164, D06P 324, D06M 1350

Patent

active

049901648

ABSTRACT:
A process is described for the photochemical stabilization of undyed and dyed polyamide fibre material, and blends thereof with other fibres, using photochemically stabilizing compositions based on copper compounds of phenols, which process comprises treating the polyamide fibre material with fibre-reactive organic copper complexes of the reaction products of o-hydroxybenzoyl derivatives of the formula ##STR1## wherein R is hydrogen or C.sub.1 -C.sub.4 alkyl and the OH substituent is located in the 3-, 4- or 5-position, with aliphatic diamines or hydroxylamine. The copper complex compounds are distinguished by a high rate of exhaustion on to the polyamide fibre material, a feature which is significant in economic terms because of the low consumption of product.

REFERENCES:
patent: 4544372 (1985-10-01), Heise et al.
patent: 4613334 (1986-09-01), Thomas et al.
patent: 4655830 (1987-04-01), Reinert et al.
patent: 4704133 (1987-11-01), Reinert et al.
patent: 4775386 (1988-10-01), Reinert et al.
patent: 4874391 (1989-10-01), Reinert

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