Abstract The invention comprises water-insoluble azo dyes of the general formula <FORM:1024485/C4-C5/1> where R is a nitro group-free residue of the benzene series, X is an acylamino radical, Y is hydrogen or halogen atom or a C1-C4 alkyl or C1-C4 alkoxy radical, R2 is a straight chain or branched unsubstituted or substituted C1-C4 alkyl radical or has the same meaning as R1, R1 denotes a grouping <FORM:1024485/C4-C5/2> where Z stands for a C2- 4 alkylene radical which may be substituted and R3 is a substituted or unsubstituted C1-C4 alkyl radical said dyes being free of sulphonic and carboxylic acid groups. The dyes may also be prepared by reacting an appropriate dye containing a hydroxy group with a chloroformic acid alkyl ester to form the carbonate group. The dyes are prepared by coupling an appropriate benzene series diazo component with an appropriate amine. In an example, 4-cyano-aniline is diazotized and coupled with 1-N,N-di-[b (methoxycarbonyloxy) - ethyl] - amino - 3 - methoxyacetylamino - benzene to obtain an orange dye. Additional products are specified and a dyeing process described. The dyes are suitable for dyeing and printing textiles of polyethylene terephthalates, condensation products of terephthalic acid and 1,4-bis-hydroxy methyl - cyclohexane and cellulose acetates.
A COMPOUND FREE OF SULFONIC AND CARBOXYLIC ACID GROUPS AND HAVING THE FORMULA FI-01 WHEREIN K'' IS A MEMBER SELECTED FROM THE CLASS CONSISTING OG CYANO, BROMO, CHLORO, NITRO, LOWER ALKYL, LOWER ALKOXY, CARBO LOWER ALKOXY, TRIFLUOROMETHYL, PHENYL, LOWER ALKYL SULFONYL, PHENYL SULFONYL, CARBONAMIDE AND LOWER ALKYL-SUBSTITUTED CARBINAMIDE; L IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, CYANO AND NITRO; M IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF CHLORO AND BROMO, N BEING AN INTEGER OF 0-3 WHEN M IS CHLORO, AND 0-1 WHEN M IS BROMO; X IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF
Claim 2
Dependent Claim
101 words
A COMPOUND FREE OF SULFONIC AND CARBOXYLIC ACID GROUPS AND HAVING THE FORMULA FI-01 WHEREIN K'' IS A MEMBER SELECTED FROM THE CLASS CONSISTING OG CYANO, BROMO, CHLORO, NITRO, LOWER ALKYL, LOWER ALKOXY, CARBO LOWER ALKOXY, TRIFLUOROMETHYL, PHENYL, LOWER ALKYL SULFONYL, PHENYL SULFONYL, CARBONAMIDE AND LOWER ALKYL-SUBSTITUTED CARBINAMIDE; L IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, CYANO AND NITRO; M IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF CHLORO AND BROMO, N BEING AN INTEGER OF 0-3 WHEN M IS CHLORO, AND 0-1 WHEN M IS BROMO; X IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF