Method for preparing organic pigment of red benzimidazolones

A method for preparing red benzimidazolone organic dyestuff includes applying diazotization process to carry out diazotization for substituted aromatic amine and aminobenzenesulfonic acid separately for obtaining relevant diazoles solutions, mixing the two diazols, using mixed diazols to couple with...

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Bibliographic Details
Main Authors YINGYU HU, SHU ZHANG, YONGJIA SHEN
Format Patent
LanguageEnglish
Published 12.01.2005
Edition7
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 method for preparing red benzimidazolone organic dyestuff includes applying diazotization process to carry out diazotization for substituted aromatic amine and aminobenzenesulfonic acid separately for obtaining relevant diazoles solutions, mixing the two diazols, using mixed diazols to couple with coupling composition for obtaining coupled material in mixed crystal form and producing final dyestuff product through pigmenting.
Bibliography:Application Number: CN2004117720