Basf Aktiengesellschaft

Dieter Wegerle

Reinhold Krallmann

Peter Neumann

Michael Thomas

Helmut Reichelt

Arno Lange

Wolfgang Reuther

Gunther Lamm

Erwin Hahn

Alexander Aumueller

Herbert Helfert

Helmut Degen

Michele Vescia

Friedrich Reinert

Paul Richter

Dye mixtures with pyridoneazo dyes

Polyamide substrates are dyed from aqueous baths with suitable dyes and with copper complexes of organic N-nitrosohydroxylamines as light stabilizers for the dyed polyamide.

Dyeing of polyamide substrates with an organic N-nitroso-hydroxylamine

Improved light fastness of dyeings on textile polyester material with disperse dyes is obtainable by dyeing in the presence of certain benzophenone ether esters, some of which are novel.

Light fastness of polyester dyeings using benzophenone ether esters, and

Textile polyester material is dyed with disperse dyes in the presence of specific benzophenone derivatives, some of which are novel, to improve the light fastness.

Benzophenone ether esters and use thereof to improve the light fastness

A process for improving the lightfastness of dyeings obtained with acid dyes and/or metal complex dyes on polyamide textile materials, by treating the latter with 0.01-1% by weight of a copper hydroxamate before, during or after dyeing.

Lightfastness of dyeings obtained with acid dyes or metal complex dyes

A process for improving the lightfastness of dyeings obtained with acid dyes and/or metal complex dyes on polyamide textile materials, by treating the latter and 0.01-1% by weight of a copper hydroxamate before, during or after dyeing.

A process for removing oligomer deposits from dyed and non-dyed textile materials which consist of polyester fibers or of blends of these fibers with other fibers, and from dyeing machinery, by a treatment with an aqueous, alkaline liquor which contains from 0.1 to 10 g/l of a quaternary ammonium compound carrying not less than two C.sub.6 -C.sub.22 -alkyl or -alkenyl groups on the quaternary nitrogen, at up to 100.degree. C. The oligomers are hydrolyzed and are removed together with the treatment liquor.

Growing community of inventors

Mannheim, Germany

Dieter Wegerle