Process for the photochemical and thermal stabilization of undye

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...

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8494, 8587, 8922, D06P 1642

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active

056499809

ABSTRACT:
A process is described for the photochemical and thermal stabilisation of undyed and dyed polyester fibre materials, which comprises treating said materials with a compound of formula ##STR1## wherein R.sub.1 and R.sub.2 are each independently of the other C.sub.1 -C.sub.12 alkyl. Dyeings and prints of superior lightfastness and sublimation fastness on polyester and cellulose acetate are obtained by this process.

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patent: 4831068 (1989-05-01), Reinert et al.
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patent: 4950304 (1990-08-01), Reinert et al.
patent: 5084570 (1992-01-01), Burdeska et al.
patent: 5106972 (1992-04-01), Burdeska et al.

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