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Photodecomposition of Aminoanthraquinone Disperse Dyes on Poly(ethylene terephthalate)
Author(s) -
Giles C. H.,
Sinclair R. S.
Publication year - 1972
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.1478-4408.1972.tb03067.x
Subject(s) - polyester , anthraquinone , polymer , photochemistry , chemistry , cellulose , polymer chemistry , ethylene , alkylation , organic chemistry , materials science , catalysis
The rapid fading on polyester fibres of certain blue anthraquinone disperse dyes under normal conditions of exposure is due to the ease of photochemical de‐alkylation of their substituted‐amino groups. The products of the photoelimination reaction for a series of dyes have been identified, and a mechanism for the reaction is proposed. The higher photochemical stability of these dyes on cellulose acetate and nylon is perhaps due to hydrogen bonding of the alkylamino groups to the polymer. The influence of wavelength of irradiation, oxygen, moisture and the physical structure of the polymer is discussed.