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The Colouring of Vinylon
Author(s) -
Nomura S.,
Tanabe K.
Publication year - 1958
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.1478-4408.1958.tb02265.x
Subject(s) - dyeing , spinning , formaldehyde , materials science , polymer chemistry , aqueous solution , polymer science , cellulosic ethanol , crystallization , chemistry , chemical engineering , composite material , organic chemistry , cellulose , engineering
Vinylon is usually made by spinning an aqueous solution of polyvinyl alcohol, heat‐treating the water‐soluble fibres obtained, and subsequently acetalising with formaldehyde. As both hydroxyl and acetal groups in the accessible region are concerned in the dyeing of vinylon, it is generally intermediate in dyeing behaviour between cellulosic fibres and typical synthetic fibres. The dyeing properties of vinylon with direct dyes are thus affected not only by crystallisation due to heat‐treatment and degree of acetalisation but also by the acetalising conditions. For the practical dyeing of vinylon to medium or heavy depths direct, sulphur, vat, azoic, disperse, and metal‐complex dyes may be employed, and their fastness is not greatly different from their corresponding fastness on other fibres. Dope dyeing is now most advantageous for blacks and dark blues, and is carried out on a commercial scale.