SULPHUR DYE COMPOSITIONS AND THEIR PRODUCTION

2095347 9307221 PCTABS00021 A starting sulphur 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 a slurry of dye particles having improved characteristics and which may be processed to fine sulp...

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Bibliographic Details
Main Author MESZAROS, LASZLO A
Format Patent
LanguageEnglish
French
Published 12.04.1993
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:2095347 9307221 PCTABS00021 A starting sulphur 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 a slurry of dye particles having improved characteristics and which may be processed to fine sulphur dye dispersions of controlled narrow range particle size.
Bibliography:Application Number: CA19922095347