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US 4,560,386 AGranted
One-bath method for producing tone-in-tone dyeings on sueded wool- or fur-bearing skins
AssigneeSandoz Ltd.
InventorsTony A. Hopkins, Rudolf Seitz
Life of this patent
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Abstract
Disclosed is a method for dyeing sueded wool- or fur-bearing skins tone-in-tone in a single bath and in one step. The dyeing is carried out with reactive dyestuffs bearing at least one reactive group selected from acryloylimino, halogenoacryloylimino and .beta.-halogenopropionylimino, in the presence of non-ionic or anionically modified polyalkoxylated surfactants.
Claims21
A method for dyeing sueded tanned wool- or fur-bearing skin material tone-in-tone which comprises treating the material in a single bath and in one step with an aqueous dyeing liquor containing
- (i) a reactive dyestuff bearing at least one reactive group selected from acryloyl, halogenoacryloyl and .beta.-halogenopropionyl groups which are bound through an unsubstituted or substituted imino group, or a mixture of such dyestuffs, and
- (ii) a non-ionic or anionically modified polyalkoxylated surfactant or a mixture of such compounds.
Dependencies are inferred from the claim text.