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PROCESS FOR RECYCLING SULPHUR BLACK DYE FROM A DYEING PROCESS AND PRODUCING RECYCLED DYE IN LEUCO FORM
PROCESS FOR RECYCLING SULPHUR BLACK DYE FROM A DYEING PROCESS AND PRODUCING RECYCLED DYE IN LEUCO FORM
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机译：从染色过程中回收硫磺黑色染料的方法，并在Leuco形式中产生再生染料
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摘要
The present invention relates to a novel process for the recovery of Sulphur Black dyes in an effluent of a dyeing process and reducing the Sulphur Black dyes with sulfide free agents to form solubilized pigments in leuco form for the reusage of the same in a dyeing operation.
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