摘要:
A new class of dyestuffs that contains a carbamate structure to which there is attached an N-hydroxymethyl group has been prepared. These new dyestuffs were prepared through combination of certain dyestuffs with the hydroxyl group of hydroxyalkyl carbamates. Methylolation of the carbamate moiety renders the dyestuffs reactive under acidic conditions to cellulosic and other textile materials containing reactive hydrogens.
摘要:
The invention relates to compounds of formula ##STR1## The compounds of formula (1) are suitable as dye for dyeing or printing hydroxyl group-containing or nitrogen-containing fibre materials and give dyeings of prints having good allround fastness properties.
摘要:
The invention provides a cellulose-dyeing dyestuff having the formula ##EQU1## wherein Z is the chromophoric radical of a cellulose-dyeing dyestuff containing a vinyl sulfone group (--CH.sub.2 CH.sub.2 SO.sub.2 --), e.g. Cl Reactive Violet 4 and Cl Reactive Black 5; B is --CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 CH.sub.2 --, or ##EQU2## A is --O-- or --S--; and X is --H, --CH.sub.2 OH, --CH.sub.2 OCH.sub.3, or ##EQU3## which dyestuff will dye a cellulosic material by heating in the presence of an acid catalyst. The cellulose-dyeing dyestuff of the invention is prepared by reacting a conventional cellulose-dyeing dyestuff having a chromophoric radical containing the aforesaid vinyl sulfone groups (e.g., Cl Reactive Black 5 and Cl Reactive Violet 4) with a hydroxy carbamate, and methylolating the resulting product. The utility of conventional cellulose-dyeing dyestuffs, which are normally reactive with cellulosic materials under alkaline conditions, is greatly extended by converting them to the methylolated derivatives of the invention, through prolonged shelf life and compatibility with selected acidic catalysts.
WHEREIN D is the residue of a diazo component; A, B and Z are substituent moieties; m and n are integers and R is a hydrocarbon bridging member as well as the copper, cobalt and chromium metal complexes thereof, which are useful for dyeing wool, polyamide, silk or cellulose fibers in good dye yields having highly brilliant greenish to reddish yellow shados possessing good fastness properties.
WHEREIN: A IS A RESIDUE SELECTED FROM THE GROUP CONSISTING OF SUBSTITUTED AND UNSUBSTITUTED BENZENES, DIPHENYLS, DIPHENYLMETHANES, AZOBENZENES, THIAZOLES, BENZOTHIAZOLES, THIADIOZOLES, TRIAZOLES, AND DERIVATIVES THEREOF, WHEREIN THE SUBSTITUENTS ARE NON-WATER-SOLUBILIZING SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF CHLORINE, BROMINE, NITRILE, NITRO, ACETYL, TRIFLUOROMETHYL, LOWER ALKYLSULPHONYL, SULPHONAMIDE, MONO- AND DI-LOWER ALKYLSULPHONAMIDE, LOWER ALKOXYCARBONYL, ACETYLAMINE, PHENYLAMINE, PHENYL, LOWER ALKYL AND LOWER ALKOXY; B IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF SUBSTITUTED AND UNSUBSTITUTED PHENYLENE AND NAPHTHYLENE RADICALS BONDED TO THE AZO AND THE AMINO GROUPS IN THE 1- AND 4-POSITIONS, WHEREIN THE SUBSTITUENTS ARE NON-WATERSOLUBILIZING SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF CHLORINE, METHYL, METHOXY AND ACETYLAMINO; R1 IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL HAVING FROM 1 TO 4 CARBON ATOMS, B-CYANOETHYL, B-HYDROXYETHYL AND BENZYL; R2 AND R3 EACH IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, METHYL, ETHYL AND PHENYL; P IS AN ALKYLENE RADICAL HAVING FROM 2 TO 3 CARBON ATOMS; Q IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, BENZYL AND CARBAMOYLETHYL; X IS AN ANION; AND N IS 1 OR 2. THE DYESTUFFS OF THE PRESENT INVENTION ARE USEFUL AS DYES FOR A WIDE VARIETY OF MATERIALS, INCLUDING TANNED CELLULOSIC FIBERS, SILK, LEATHER, CELLULOSE ACETATE, PAPER, AND SYNTHETIC FIBERS, ESPECIALLY POLYMERIC AND COPOLYMERIC ACRYLONITRILE. THE DYESTUFF OF THE PRESENT INVENTION IS PARTICULARLY SUITABLE FOR DYEING POLYACRYLONITRILE FIBERS WITH EXCELLENT LIGHT, WET, AND HEAT-FASTNESS PROPERTIES.