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The Finishing of Wool Tops with Bunte Salt Polyamide Polymers
Author(s) -
COCKETT K. R. F.,
LEWIS D. M.
Publication year - 1976
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.1478-4408.1976.tb03264.x
Subject(s) - wool , tops , dyeing , polyamide , ionic bonding , salt (chemistry) , polymer , chemistry , salt solution , polymer chemistry , chemical engineering , composite material , materials science , organic chemistry , ion , spinning , engineering
Hercosett 57 can be readily converted to a Bunte salt terminated polymer which exhibits different ionic character both in solution and at the fibre surface; in alkaline solution it behaves as an anionic polymer, but in weakly acidic solution it possesses amphoteric properties. Because of this overall change in ionic character the polymer can be applied to chlorinated wool tops from baths set at pH 3.5, in marked contrast to Hercosett 57 where bath pH values of 8.0 are required. The dyeing properties of yarns produced from these tops will be described with special emphasis on the differential dyeing possibilities offered by mixing these yarns with the more usual Hercosett 57 treated yarns. Soiling properties of the new finish have also been evaluated.