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Ethoxylated amphoteric products in wool dyeing
Author(s) -
Cegarra J.,
Riva A.
Publication year - 1988
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.1478-4408.1988.tb01166.x
Subject(s) - dyeing , chemistry , kinetics , wool , molar ratio , polymer chemistry , absorption (acoustics) , micelle , acid dye , organic chemistry , materials science , catalysis , aqueous solution , physics , quantum mechanics , composite material
The influence of some amphoteric compounds and their degree of ethoxylation on both the aggregation state of two acid dyes and the dyeing kinetics of these on the wool fibreshas been studied. The formation of amphoteric product‐dye complexes and their redissolution in the micelles of the amophoteric compound has been observed; the amphoteric product‐dye molar ratio and the degree of ethoxylation of the amphoteric product have important influences. Rates of dyeing in the presence of an amphoteric product are, in general, faster than when the dye is present alone; the increase in ethoxylation reduces the absorption rate of the dye. A relationship between the aggregation state of the dye and its rate of dyeing has been established.