Dyeing of mixed-fiber substrates with a disperse dye and a metal-complex direct or reactive dye
AssigneeSandoz Ltd.
InventorsOskar Annen, John A. Hook
Life of this patent
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Abstract
A process for dyeing a mixed fibrous substrate comprising applying to the substrate at least one disperse dye and at least one metal containing direct and/or reactive dye in the presence of a complexing agent having a stability constant K value with the metal of the direct or reactive dye of from 6 to 17 inclusive.
Claims26
A process for dyeing a polyester/cellulose or polyamide/cellulose substrate comprising exhaust dyeing the substrate with at least one disperse dye and at least one metal complex direct and/or reactive dye in the presence of a complexing agent having a stability constant K value with the metal of the direct or reactive dye of from 6 to 17 inclusive.
A process according to clam 1, which is carried out using at least one disperse dye and at least one metal complex direct dye.
A polyester/cellulose or polyamide/cellulose substrate which has been exhaust dyed with at least one disperse dye and at least one metal-complex direct and/or reactive dye in the presence of a complexing agent having a K value with the metal of the direct or reactive dye of from 6 to 17 inclusive.
Dependencies are inferred from the claim text.