Lithium-containing assistants for dyeing and printing of cellulosic and/or regenerated cellulosic materials
AssigneeBayer Aktiengesellschaft
InventorsMartin Riegels, Joachim Grutze
Life of this patent
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Abstract
Improved dyeings or prints on cellulose, regenerated cellulose and/or mixtures of cellulose with natural or synthetic fiber materials using one or more reactive and/or direct dyes are obtained in the presence of a lithium compound.
Claims6
In the dyeing or printing of a cellulose-containing material, wherein a cellulose-containing material is first wet with a liquid containing a dyeing assistant, and the wet material is thereafter contacted with a dye, the improvement wherein the material is contacted with a lithium cation-containing compound prior to contact with the dye.
The process according to claim 5, wherein the lithium cation-containing compound is lithium sulphate.
Dependencies are inferred from the claim text.