Colorants pyrazole-azoïques basiques et procédé pour leur préparation

The invention provides dyes of general formula <FORM:1060409/C4-C5/1> in which R1 is an unsubstituted or substituted alkyl or phenyl radical, R2 is an unsubstituted or substituted alkyl radical, A is a divalent radical which is necessary for the completion of the right-hand side of the formula...

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Bibliographic Details
Main Author HANSEN GUENTER
Format Patent
LanguageFrench
Published 07.05.1965
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:The invention provides dyes of general formula <FORM:1060409/C4-C5/1> in which R1 is an unsubstituted or substituted alkyl or phenyl radical, R2 is an unsubstituted or substituted alkyl radical, A is a divalent radical which is necessary for the completion of the right-hand side of the formula to a five-membered or six-membered, unsubstituted or substituted mononuclear or polynuclear heterocyclic ring system, E is an inorganic or organic simple or complex anion, p is 3 or 4, n is 1 or 2. The dyes are prepared by coupling an amine of formula <FORM:1060409/C4-C5/2> in which the figures are as above and R1 may also be hydrogen, with a heterocyclic cyanomethyl compound of formula <FORM:1060409/C4-C5/3> (figures as above and m is 1 or 2) and alkylating the product. The two values of R2 in the final product may be different and obtained by alkylating the dye product with an alkylating agent different from the value of R2 present in Formula III. The dyes are water-soluble and give yellow-red shades, especially useful in polyacrylonitrile and copolymers thereof.
Bibliography:Application Number: FR19640978298