Process for the finishing of fibrous materials: sulfonyl- or carbonyl-cyanamides of dyestuffs
AssigneeHoechst Aktiengesellschaft
InventorHartmut Springer
Life of this patent
Estimating the term…
Abstract
Fibrous materials of any kind is finished with an organic compound having fiber-finishing properties and containing one or several groups of the formula ##STR1## in which X is sulfonyl or carbonyl and A represents hydrogen or one equivalent of a mono-, bi- or trivalent metal or an ammonium group, is applied onto the fibrous material in the form of an aqueous or organo-aqueous solution or dispersion, and the fibrous material thus treated is then subjected, if necessary, to a heat treatment for the fixation of this organic compound onto the fibrous material. Organic fiber-finishing compounds containing the above-mentioned group may be for example dyestuffs, optical brighteners or compounds increasing the crease resistance.
Claims1
In a process for coloring a fibrous material made of wool, synthetic polyamide fibres or cellulose fibres, or of mixtures thereof, which comprises applying an organic dyestuff in the form of an aqueous or organo-aqueous solution or dispersion onto said fibrous material and treating it at a temperature of from 60.degree. to 230.degree. C. for fixation of the dyestuff on the substrate, the improvement consisting of employing as the organic dyestuff an organic dyestuff containing one or several groups of the formula ##STR36## in which X is sulfonyl or carbonyl and A is hydrogen or the equivalent of a mono-, bi- or trivalent metal or is ammonium.
Dependencies are inferred from the claim text.