Identifizierung organischer Verbindungen LXVIII. Chromatographie und Elektrophorese von Vinylsulfon-(sulfoester)-reaktivfarbstoffen

Cee, A.; Gasparič, J.

doi:10.1135/cccc19681091

Cited by 7 publications

(2 citation statements)

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“…Treatment by alkali results in formation of vinylsulphone by deprotonation and sulphate elimination. Further reaction at 90-100°C and pH values above 11.5 with hydroxy or carboxylate ions leads to hydroxyethylsulphone and occasionally ether [2,7,14,15]. The formation of vinylsulphone can be followed very easily by measuring the pH of concentrated dye solutions during the addition of alkali.…”

Section: Stability In Alkaline Mediummentioning

confidence: 99%

Interaction of vinylsulphone reactive dyes with cellulosic fabrics. Part 1 — dyeing mechanism, fibre characterisation and effects of alkaline electrolytes

Guo

Petit‐Ramel

Gauthier

et al. 1993

Journal of the Society of Dyers and Colourists

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Two vinylsulphone dyes were studied by an HPLC technique under alkaline conditions in order to evaluate their various chemical forms. Fabrics made from viscose fibres were dyed under controlled conditions, varying the nature and the quantity of electrolyte used. It was found that sodium chloride is the most efficient salt for a short dyeing times (20 min) while lithium chloride yields higher dye uptake over more prolonged dyeing processes (60 min). The effect of the electrolytes on dye uptake was found to be related to the radius of the solvated cation.

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Section: Stability In Alkaline Mediummentioning

confidence: 99%

Interaction of vinylsulphone reactive dyes with cellulosic fabrics. Part 1 — dyeing mechanism, fibre characterisation and effects of alkaline electrolytes

Guo

Petit‐Ramel

Gauthier

et al. 1993

Journal of the Society of Dyers and Colourists

View full text Add to dashboard Cite

show abstract

“…Methods for separating and identifying polynuclear phenols have been described (1125). Polynuclear aza heterocyclic compounds (1124), nitro dyes (309), dyes for vinyl sulfone (260), and the common histological dyes (591) have been separated. Rose Bengal contains at least ten electrophoretically separable components (1197).…”

Section: General Chemical Applicationsmentioning

confidence: 99%