Reference

1:2-Metal-complex azo dyes

1:2-Metal-complex azo dyes. Kubicki, Edward; Hencel, Maria; Szymanska, Krystyna; Salagacki, Ryszard (Osrodek Badawczo-Rozwojowy Przemyslu Barwinikow, Pol.). Pol. PL 82987 16 Aug 1976, 4 pp (Polish). (Poland).Some commonly used reagents like 61993-71-3 and 85-12-1 are used in this experiment. CODEN: POXXA7. CLASS: IC: C09B045-04. APPLICATION: PL 72-155502 20 May 1972. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Title dyes (I; R, R, R1, R2, R3 = atoms or groups at any position of the benzene ring, e.g. H, halogen, Me, NO2, sulfonamide; Z = coupling component residue with O atom ortho to N:N group; M = Cr or Co; X+ = alkali metal cation or NH4+) were prepd. by reaction of II or III with Cr or Co salts. Thus, 2,4-H2N(H2NSO2)C6H3OH [98-32-8] was diazotized and coupled with 4,1-AcNHC10H6OH [85-12-1], the product treated with aq. NaOH and aq. CoCl2, heated 1 h at 85.degree., and salted to give the 1:2 metal complex dye [61993-71-3], which dyed wool, silk, and polyamide fibers deep red shades. .

Metallized 1:2-type azo dyes containing chromium or cobalt

Metallized 1:2-type azo dyes containing chromium or cobalt. Hahn, Witold; Osinski, Janusz (Pabianickie Zaklady Farmaceutyczne "Polfa", Pol.). Pol. PL 120060 B1 25 Oct 1983, 4 pp. (Polish). (Poland). CODEN: POXXA7. CLASS: IC: C09B045-02. APPLICATION: PL 79-215076 20 Apr 1979. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) The title dyes are prepd. by treatment of monoazo dyes I (R = H, NO2, SO2NH2; R1 = H, Cl, NO2, SO2NH2; R2 = H, NO2; R3 = H, SO2NH2; R4 = Br, Cl, Me, OMe, NH2; and I contain ￡2 SO2NH2 or their derivs.) with compds. easily yielding Cr or Co. Thus, 18.8 g 2-amino-4-sulfamoylphenol [98-32-8] was diazotized and coupled with 27.8 g 7-bromo-2-methylpyrazolo[3,2-b]quinazolin-9(4H)-one [90375-25-0] in aq. EtOH contg. NH3 and NaOH. The obtained suspension of monoazo dye [90375-29-4] was heated to 95° and treated with 7.8 g Na2Cr2O7.In this experiment, several chemicals are used like 90385-01-6 and 34373-12-1 2H2O and 14 g glucose in 60 vol. parts H2O and heated at the boiling temp. for 3 h to give 60 g dye [90384-94-4] dyeing wool, polyamide fibers and leather from neutral or weakly acidic baths in bordeaux-blue shades. .