摘要:
The invention relates to mixtures of monoazo dyes, which are characterized in that they consist of one or more dyes of the general formula I ##STR1## and one or more dyes of the general formula II ##STR2## where R.sup.1 is methyl, ethyl, n-propyl or i-propyl,R.sup.2 is ethyl or n-propyl,m is 2 or 3 andn is 1 or 2, with the proviso that m+n is 4,processes for preparing same and the use thereof for dyeing and printing hydrophobic fibre materials and blends thereof with natural fibre materials.
摘要:
Compounds useful as light fast yellow, orange and red dyes for natural and synthetic polyamide fibers and for secondary cellulose acetate fibers, have the structure: ##SPC1##WhereinR.sub.1 is alkyl, benzyl, cyclohexyl, --C--CH.sub.2 CH.sub.2 OH, ##EQU1## ##EQU2## --CH.sub.2 CH.sub.2 CN, --CH.sub.2 CH.sub.2 --O--COCH.sub.3, or ##EQU3## R.sub.2 is --H, -alkyl, halogen, --O-- alkyl or --NH--COR.sub.4 ; R.sub.4, as used in R.sub.2, R.sub.3, R.sub.5 and R.sub.6, represents -alkyl, -tolyl, -phenyl or -halophenyl; andB.sub.1 is a benzene ring or a benzene ring substituted with substituents which may be selected from nitro, halogen, cyano, alkyl, alkoxy, trifluoromethyl, alkylsulfonyl, acetyl, carboxamido, sulfonamido, N-alkyl-sulfonamido, N,N-dialkylsulfonamido, N-alkylcarboxamido and carboxyl groups;B.sub.2 is a 1,4-naphthylene or a 1,4-phenylene group of the structure: ##SPC2##WhereinR.sub.5 is --H, alkyl, -alkoxy, or --NHCOR.sub.4 ;R.sub.6 represents --H, alkyl, alkoxy, --NHCOR.sub.4, --NH--SO.sub.2 --R.sub.4 or halogen; andM is --H, --Na, --K, --Li or --NH.sub.4.
IN WHICH R1 and R6 each represents a hydrogen or a halogen atom or a nitro, alkyl or alkoxy group, R2, R3, R4 and R5 each represents a hydrogen atom or an alkyl or alkoxy group, X represents an amino group bound to the -SO2 bridge by way of its nitrogen atom and Y represents an alkyl group or a group of the formula B-SO2-, in which B represents a low-molecular alkyl group or a benzene residue and in which the benzene ring A can be fused to another benzene ring and the Y-O group is in ortho- or paraposition to the azo bridge, are valuable dyestuffs suitable for the spin-coloration of cellulose esters.