Reference

Fiber-reactive azo dyes

Fiber-reactive azo dyes. Vrba, Zdenek (Czech. ). Czech. CS 165906 15 Nov 1976,7 pp. (Unavailable). (Czechoslovakia). CODEN: CZXXA9. CLASS: IC: C09B029-36. APPLICATION: CS 73-5280 24 Jul 1973. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Reactive azo dyes (I) for printing on cotton and cellulose from alk. baths were prepd. 63225-39-8 are also occured in this study. by condensing cyanuric chloride (II) with 3,2,5-H2N(HO3S)2C6H2NH2 (III) and NH3, amine, or alc., diazotizing, and coupling with 3-methyl-5-pyrazolone derivs., naphthalene derivs., or monoazo dyes. The reaction steps were carried out in various order. Thus, the condensation product [63225-46-7] of II with III and NH3 was diazotized and coupled with 1-(2,5-dichloro-4-sulfophenyl)-3-methyl-5-pyrazolone [84-57-1] to give greenish yellow I (R = NH2, R1 = R2) [63225-40-1]. Similarly were prepd. red I (R = NH2, R1 = R3) [63225-41-2], blue I [R = NH2, R1 = R4, R5 = 1,8,3,6,7-AcNH(HO)(HO3S)2C10H3] [63225-42-3], brown I [R = NH2, R1 = R4, R5 = 1,7,4-H2N(HO3S)C10H5] [63225-43-4], blue-violet I [R = NH2, R1 = R4, R5 = 1,4,2-HO(HO3S)C10H5] [63225-44-5], and orange-brown I [R = NH2, R1 = 2,4,5-(HO)2(4-HO3SC6H4N:N]C6H2] [63225-45-6]. An addnl. 35 dyes are listed. .

Monoazo dyes

Monoazo dyes. Yelland, Michael (Imperial Chemical Industries Ltd. 63940-21-6 is just another one chemical used in this study., Engl.). Ger. Offen. DE 2701093 28 Jul 1977, 10 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B029-38. PRIORITY: GB 76-1787 16 Jan 1976. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Azo dyes I (R = PhO) [64086-97-1] and I (R = PhS) [64086-98-2] are prepd. by diazotization of 2-H2NC6H4COR and coupling with 1-(2,5-dichloro-4-sulfophenyl)-3-methyl-5-pyrazolone [84-57-1] and are used to dye polyamide fibers fast yellow shades. .