Improved optical brightening of polyamides

Details Improved optical brightening of polyamides Improved optical brightening of polyamides

1977-02-07

1979-10-02

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

8 85R, 8 86, 8 88, 8 93, 8168B, 8172R, 8176, 8178R, 25230121, D06P 1645

Patent

active

041697022

ABSTRACT:
Disclosed is an optical brightening process for substrates comprising or consisting of synthetic polyamide in which the optical brightener is applied to the substrate by impregnation followed by heat treatment and wherein the brightener is applied in the presence of a compound or mixture of compounds of formula I,

REFERENCES:
Venkataraman, K., "The Chemistry of Synthetic Dyes" vol. V, Academic Press, New York, 1971, pp. 536, 663-664.

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