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The light Fastness of Yellow Wools
Author(s) -
Derbyshire A. N.,
Lemin D. R.
Publication year - 1964
Publication title -
journal of the society of dyers and colourists
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 0037-9859
DOI - 10.1111/j.1478-4408.1964.tb02591.x
Subject(s) - wool , dyeing , fade , fading , substrate (aquarium) , chemistry , pulp and paper industry , materials science , composite material , organic chemistry , computer science , telecommunications , biology , engineering , ecology , decoding methods , operating system
Naturally yellow and artificially yellowed wools fade rapidly whiter on short exposure to light. This fading of the substrate can result in the apparently poor light‐fastnessproperties of dyes applied to yellow wool. Bleaching results in wools which show the effect to a smaller extent, but subsequent dyeing causes partial reversion of the colour. Theaddition of small amounts of suitable mild reducing agents to dyebaths may result in whitening of yellow wool and a reduced tendency to rapid fading of the substrate, although this effect was not completely eliminated with the agents studied. It is suggested that themost practical method of eliminating trouble arising from the rapid fading of yellow woolwhen producing pale, bright dyeings is to use as naturally white a wool as possible.