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Practical Aspects of Vat Dyeing of Cotton Yarn Packages
Author(s) -
Fox M. R.
Publication year - 1962
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.1478-4408.1962.tb02497.x
Subject(s) - dyeing , yarn , pigment , solubility , pulp and paper industry , process engineering , polymer science , materials science , computer science , chemistry , composite material , organic chemistry , engineering
Factors that contribute to the production of level vat dyeings on cotton yarn packages are discussed with reference to the machines, winding, and quality of dyes and chemicals used. A method is given for determining the leueo‐solubility of vat dyes in package‐dyeing systems. Rates of dyeing and migration properties are listed and examples of their use in the formulation of recipes and processes given. Earlier systems of prepigmentation are critically discussed and a new approach, based on the preparation, from FDN Caledon Grains, of very stable pigment dispersions with low pigment exhaustion values, is described. High pigment stability and control of the rates of reduction of FDN qualities are considered responsible for the success of the method.