Abstract
IT is difficult to reduce the affinity of wool for acid dyes by means of compounds which react simply to form condensation products with the basic side-chains. The latter are relatively inaccessible in the crystalline phase of the fibres, and where a successful ‘resist’ is obtained, for example, by acetylation in presence of sulphuric acid, it is because incomplete reaction is compensated by the introduction of sulphonic groups into the keratin molecule1. The net positive charge acquired by the fibres in acid solution is thereby reduced, thus ensuring that most, if not all, of the dye is acquired by the untreated wool when treated and untreated patterns are dyed in the same dye-bath. In the light of these observations, it seemed likely that a successful ‘resist’ might be obtained simply by forming an acid polymer within the fibres. The possibility was therefore examined as soon as a convenient method was developed for polymerizing monomers within textile fibres2.
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References
Elliott and Speakman, J. Soc. Dyers and Colourists, 59, 185 (1943); Elliott, ibid., 60, 273 (1944).
Lipson and Speakman . [Nature, 157, 590 (1946)].
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LIPSON, M., SPEAKMAN, J. Use of Polymers to Immunize Wool Against Acid Dyes. Nature 157, 736 (1946). https://doi.org/10.1038/157736a0
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DOI: https://doi.org/10.1038/157736a0
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