Process for the production of reactive dyes by adiabatic reaction of cyanuric chloride with an amino group-containing dye at elevated temperature
AssigneeCiba-Geigy Corporation
InventorKarlheinz Franke
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Abstract
A new process for the production of reactive dyes by the reaction of cyanuric chloride with anionic dyes containing an amino group, which process comprises the adiabatic reaction of cyanuric chloride with the dye, at a temperature of 20.degree. to 80.degree. C. and a pH value of between 3.0 to 7.0, with the rapid addition of the educts within 1 to 30 minutes, produces reactive dyes in good yield and purity and is technically advantageous.
Claims15
A process for the production of reactive dyes by the reaction of cyanuric chloride with anionic dyes containing an amino group, which process comprises the adiabatic reaction of cyanuric chloride with the dye, at a temperature of 40.degree. to 60.degree. C. and a pH value of between 3.0 and 7.0, with the rapid addition of the educts within 1 to 30 minutes.
Dependencies are inferred from the claim text.