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US 4,255,153 AGranted
Disperse dyeing of triacetate
AssigneeSandoz Ltd.
InventorsEric Altherr, Ronald L. Hafer, Richard L. Pepin
Life of this patent
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Abstract
Textile materials containing at least 50% by weight triacetate fibers are dyed with disperse dyes in an aqueous dyebath containing an emulsifier and, as carrier, an aliphatic dicarboxylic acid diester having 6 to 24 carbon atoms, such as dibutyl maleate.
Claims7
In a process wherein a fabric comprising cellulose triacetate is dyed with a disperse dye in an aqueous liquor containing a carrier for the dye, the improvement which comprises carrying out said dyeing in the presence of an aliphatic dicarboxylic acid diester of 6 to 24 carbon atoms as the carrier.
Dependencies are inferred from the claim text.