Process for improving the photochemical stability of dyeings on

Details Process for improving the photochemical stability of dyeings on Process for improving the photochemical stability of dyeings on

1989-03-24

1990-01-23

Willis, Prince E.

Bleaching and dyeing; fluid treatment and chemical modification

Organic additive for dye composition, dye composition...

Six-membered hetero ring having two or more ring hetero...

8567, 8609, 544249, 544329, 544334, 544335, 544331, 252589, C09B 6710, C07D23970

Patent

active

048959812

ABSTRACT:
A process is described for improving the photochemical stability of dyeings on polyester fibre materials by means of UV absorbers of the formula ##STR1## in which R is alkyl, alkoxy, halogen or hydroxyl, R.sub.1 is alkyl, R.sub.2 is hydrogen, halogen, alkyl, alkylamino, hydroxyalkylamino, aralkylamino, alkoxyalkylamino, alkenyl, alkoxy, alkoxy which is substituted by hydroxyl, carboxyl or C.sub.2 -C.sub.5 alkoxycarbonyl, alkenyloxy, phenyl or phenyl which is substituted by halogen, alkyl, hydroxy-C.sub.1 -C.sub.4 alkyl, alkenyloxy, alkoxy, hydroxyl or carboxy-C.sub.1 -C.sub.4 alkoxy, m is 0 or 1 and n is 0, 1 or 2, and also novel compounds of the formula (1) in which m and n are both 0 and R.sub.2 is alkylamino, hydroxyalkylamino, aralkylamino or alkoxyalkylamino.

REFERENCES:
patent: 3442898 (1969-05-01), Luethi
patent: 3660404 (1972-05-01), Otterstedt et al.
Chemical Abstracts, 81, 14635v, (1974).

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