Dyestuff composition for dyeing or printing cellulose fiber materials
AssigneeSumitomo Chemical Company, Limited
InventorsKiyoharu Nakatsuka, Sadaharu Abeta
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Abstract
A dye composition containing C.I. Reactive Blue 19 and an alkylnaphthalenesulfonic acid/formaldehyde condensate, which is very readily soluble in water and aqueous alkaline liquors and useful for dyeing natural and regenerated cellulose fibers with high color yield, particularly in accordance with a one-bath pad dyeing method.
Claims7
A dye composition containing C.I. Reactive Blue 19 and an alkylnaphthalenesulfonic acid/formaldehyde condensate, the sulfonation degree and average condensation degree of said condensate being 50 to 150% and 1.1 to 3.0, respectively.
A method for dyeing natural or regenerated cellulose fibers, which comprises contacting said fibers with a dye bath containing C.I. Reactive Blue 19 and an alkylnaphthalenesulfonic acid/formaldehyde condensate, the sulfonation degree and average condensation degree of said condensate being 50 to 150% and 1.1 to 3.0, respectively.
Dependencies are inferred from the claim text.