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US 5,484,456 AGranted
Dyeing methods to produce deep dyeings with phthalocyanine dyes
AssigneeSandoz Ltd.
InventorsTadashi Hiuke, Yasokazu Inoue, Hiroshi Soga
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Abstract
A method for deep dyeing of cellulose fibers comprising dyeing the fibers with one or more phthalocyanine reactive dyes in a liquor, containing more than 80 g/l salt at pH of 10 or more characterized in that dyeing is carried out at a temperature above 100.degree. C. (eg about 105.degree.-150.degree. C.).
Claims13
A process for deep dyeing of cellulose fibers comprising the step of:
- dyeing the fibers with at least one phthalocyanine reactive dye in a liquor containing more than 80 g/l of a salt wherein the liquor is at a pH of at least 11.5 and at a temperature of over 100.degree. C.
Dependencies are inferred from the claim text.