C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
8/25, 260/161.2,
C09B 31/02 (2006.01) C09B 45/24 (2006.01) C09B 62/44 (2006.01) C09B 62/513 (2006.01) D06P 1/02 (2006.01)
Patent
CA 1111416
Abstract of the Disclosure The novel water-soluble disazo dyestuff consist of two nonoazo dye- stuff moieties each containing as diazo component an amine of the benzene or naphthalene series and as coupling component an amino-naphthol-mono- or disulfonic acid. The two moieties are bonded to each other via a bridge member bound to the amino groups of the coupling components and comprising two triazine radicals each containing a halogen atom, a sulfonic acid group or a thio ether or oxygen ether group or an amino group and the diazo components contain a fiber-reactive radical of the vinyl sulfone series. To produce the dyestuff 2 mols of the diazo component carrying the fiber-reactive radical of the vinyl sulfone series is coupled with 1 mol of a bivalent coupling component consisting of 2 radicals of the aminonaphthol bound to the triazine rings of the bridge member via the amino groups or two monoazo dyestuff each synthesized from the aforesaid diazo component and an aminonaphthol coupling component are reated with the halogen atoms additionally bound to the triazine rings of the bridge member. Alterna- tively, 2 mols of a monoazo compound sythesized from the said diazo component with the fiber reactive radical and the aminonaphthol coupling component carrying a halogen-triazine radical bound member containing the two triazine radicals. The metal-free dyestuff can be transformed into corresponding heavy metal complex dyestuff, preferably copper, cobalt and chronium complex dyestuffs, by treatment with an agent donating a heavy metal cation. The novel dyestuff are excellently suitable for dyeing and printing fiber material of natural and re- generated cellulose and natural, regenerated and sythetic polyamides. They are distinguished by a high tinctorial strength, a very good uptake from a long liquor, a good color-build up and good printing properties. The dyeings obtained therewith have a high fastnes? to processing and in use.
315739
Fass Rudolf
Hoyer Ernst
Meininger Fritz
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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