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The Irgalan Dyes‐Neutral‐dyeing Metal‐complex Dyes
Author(s) -
Schetty Guido
Publication year - 1955
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.1478-4408.1955.tb02065.x
Subject(s) - dyeing , wool , metal , chemistry , polymer science , materials science , organic chemistry , composite material
Dedicated to the late F. L. Goodall, M.Sc, F.R.I.C., F.S.D.C., Joint Managing Director of The Geigy Company Ltd., Manchester, who was President of the Society of Dyers and Colourists during 1953–1954. Mr. Goodall took a very keen interest in the field of neutral‐dyeing metal‐complex dyes, which have recently become very popular, and he enriched and enlarged this field by his own dyeing experiments and ideas. His was the special merit of recognising for the first time the particularly favourable behaviour of Irgalan dyes, which, from the application point of view, is fundamentally different from that of the metal‐free milling dyes. As one of the initiators of the present work, he helped with the drafting of this paper in the spring of 1954. “Unfortunately, owing to his very sudden and early death, he did not live to see the completion of this paper. The chemistry of chromium‐complex dyes is discussed in relation to dyeing properties on wool, with particular reference to the problem of avoiding skittery dyeing arising from differences between individual wool fibres. The structural features required for dyes to give non‐skittery dyeings under neutral conditions are deduced, and it is shown how these researches resulted in the production of the Irgalan (Gy) dyes.