Biscationic monoazo dyes for acid modified nylons

Abstract

Abstract ORANGE TO VIOLET BISCATIONIC AZO DYES HAVING THE FORMULA ((4-(R1-N(+)(-R2)(-R3)-CH2-CO-),2-R4-PHENYL)-N=N-(W-N=N)M- (2-R7,5-R8-1,4-PHENYLENE)-X(+)) (A(-))2 WHERE R1=ALKYL R2=ALKYL OR HYDROXYALKYL R3=ALKYL, HYDROXYALKYL OR BENZYL OR R2 AND R3 TOGETHER=ALICYCLIC RING OR R1, R2, AND R3 TOGETHER=PYRIDINIUM RING R4=H OR C1 W=1,4-NAPHTHYLENE OR -(2-R6,5-R5-1,4-PHENYLENE)- R5 AND R6=H, ALKYL, ALKOXY OR C1 R7=H, ALKYL, ALKOXY, C1, NHCO ALKYL OR NHCOC6H5 R8=H,C1, ALKYL OR ALKOXY X(+)= (1-(-),4,4-DI(ALKYL-)PIPERAZINIUM), OR -N(-ALKYL)-CH2-CH(-Z)-(CH2)N-Y(+) Y$=$NR9R2R3ORNHCOCH2$NR9R2R3, WHERE R9=R1 OR H M=0 OR 1 N=0 OR 1 Z=H WHEN N=0 AND OH WHEN N=1 AO=ANION AND WHERE ALKYL GROUPS 1-4 CARBON ATOMS, ARE PARTICULARLY WELL SUITED FOR DYEING OF BULK CONTINUOUS FILAMENT (BCF) NYLON STYLING CARPET, AND HAVE GOOD EXHAUST AND LIGHT-FASTNESS ON ACID-MODIFIED NYLON AND EXCELLENT RESERVE ON UNMODIFIED NYLONS, AT THE PREFERRED DYEING PH RANGE OF 6-6.5. THE DYES ARE PREPARED BY COUPLING P-AMINOPHENACYLAMMONIUM OR P-(P-AMINOPHENYLAZO) PHENACYLAMMONIUM SALTS TO N, N-DISUBSTITUTED ANILINES CONTAINING A PENDANT TERTAIRY AMINE OR QUATERNARY AMMONIUM GROUP ATTACHED TO THE NITROGEN ATOM.

Inventors

• 👤 D James

Bibliographic Details