Process for improving the photochemical stability of dyeings and

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

1998-03-11

1999-11-16

Gupta, Yogendra

Bleaching and dyeing; fluid treatment and chemical modification

Color protecting process for dyed product

8566, 8688, 8190, 8922, 8490, 811559, D06P 500, D06P 502, D06M 13322

Patent

active

059849762

ABSTRACT:
A process for the photochemical stabilization of dyeings and prints on polyester fibre material, which comprises treating the polyester fibre material with a compound of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, n and m are as defined herein.
The treated dyed or printed polyester fibre material is distinguished by good fastness to light and heat and has a high sun protection factor.

REFERENCES:
patent: 3896125 (1975-07-01), Helmo et al.
patent: 4831068 (1989-05-01), Reinert et al.
patent: 5298030 (1994-03-01), Burdeska et al.
patent: 5575958 (1996-11-01), Jollenbeck et al.

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