Unsymmetrical disazo pigments derived from dichlorobenzidine and acetylarylamides
Abstract
Abstract OR THE GROUP: COLORANTS SUITABLE FOR USE, E.G. IN GRAVURE INKS, ARE AZO COMPOUNDS OF THE FORMULA A-(N=N-C(=C(-Z)-X)-CO-NH-B)N WHEREIN R IS AN ALIPHATIC RADICAL HAVING FROM 5 TO 18 CARBON ATOMS AND Q IS AN ALKYLENE GROUP HAVING UP TO 5 CARBON ATOMS, AND WHEN N IS 2 EITHER EACH Z REPRESENTS THE GROUP-NH-Y OR ONE Z REPRESENTS-NH-Y AND THE OTHER Z IS-OH, Y BEING AS DEFINED HEREINBEFORE. THE COLOURANTS POSSESS GREATER COLOUR VALUE THAN THOSE KNOWN PRODUCTS OBTAINED BY HEATING TOGETHER CERTAIN AZOACYLACETARYLAMIDES AND PRIMARY ALIPHATIC AMINES. -Q-NH-CH(-CH3)-R -CH(-CH3)-R WHEREIN A REPRESENTS AN UNSUBSTITUTED OR SUBSTITUTED ARYL RESIDUE; B REPRESENTS AN UNSUBSTITUTED OR SUBSTITUTED ARYL RESIDUE; X REPRESENTS AN ALKYL GROUP HAVING FROM 1 TO 4 CARBON ATOMS OR A PHENYL GROUP; N REPRESENTS 1 OR 2; AND WHEN N IS 1, Z REPRESENTS-NH-Y, WHEREIN Y REPRESENTS EITHER A GROUP HAVING THE FORMULA:
Inventors
- 👤 Alexander Hamilton
Bibliographic Details
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