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

1988-02-17

1989-05-16

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

8442, 8490, 8566, 8190, 525418, 536 81, C08G 6346

Patent

active

048310689

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 lower alkyl, lower alkoxy, halogen or hydroxyl, R.sub.1 and R.sub.2 independently of one another alkyl which is substituted by hydroxyl, lower alkoxy, lower alkylthio, amino, monoalkylamino or dialkylamino, phenyl, phenyl which is substituted by chlorine, lower alkyl or lower alkoxy, or o-hydroxyphenyl, and n is 0, 1 or 2.

REFERENCES:
patent: 4775386 (1988-10-01), Reinert et al.
Chem. Abstract 81, 79302d, 1974.

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