Sulphur dye compositions and their production

A sulfur dye or sulfurized vat dye is treated in an aqueous reducing medium, preferably an aqueous mixture of alkali and reducing sugar, to form a solution which is then oxidized to form particles of the dye having improved characteristics.

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Bibliographic Details
Main Author LASZLO A MESZAROS
Format Patent
LanguageEnglish
Published 15.09.1994
Edition5
Subjects
ADHESIVES
CHEMISTRY
DYES
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
POLISHES
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Summary:A sulfur dye or sulfurized vat dye is treated in an aqueous reducing medium, preferably an aqueous mixture of alkali and reducing sugar, to form a solution which is then oxidized to form particles of the dye having improved characteristics.
Bibliography:Application Number: AU19920026827