Reference

Chlorinated or brominated compounds of 2-(haloaryl)-4,5-diaminochrysazines from chrysazin

Chlorinated or brominated compounds of 2-(haloaryl)-4,5-diaminochrysazines from chrysazin. Chang, Charles Hung (GAF Corp., USA). U.S. US 4016181 5 Apr 1977, 5 pp. (English). (United States of America).Several substances like 62783-67-9 may be metioned in this study. CODEN: USXXAM. CLASS: IC: C07C087-64. NCL: 260380000. APPLICATION: US 73-405307 11 Oct 1973. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Title compds., e.g. I [62793-98-0], blue dyes for polyester fibers with good buildup in heavy shades, are prepd. by a multistep process in which chrysazin [117-10-2] is successively nitrated to form 4,5-dinitrochrysazin [81-55-0], arylated with an alkoxybenzene and(or) a phenol, brominated or chlorinated to substitute Br or Cl atoms in the phenyl group, reduced to the diamino deriv., and optionally brominated or chlorinated to substitute Br or Cl atoms in the anthraquinone nucleus. Intermediates are not isolated at any stage of the prepn. .

Dye preparations for cellulose or cellulose-containing fibrous material

Dye preparations for cellulose or cellulose-containing fibrous material. Epple, Gerhard; Elser, Wolfgang (BASF A.-G., Ger.). Ger. Offen. DE 2651975 18 May 1978, 15 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B001-514. APPLICATION: DE 76-2651975 15 Nov 1976. DOCUMENT TYPE: Patent CA Section: 39 (Textiles) Print pastes contg. thickeners, polyethylene glycol, and dyes [I; R = H, C2-11 acyl, alkoxy, alkoxyalkyl (optionally substituted), alkyl, substituted alkyl, phenylalkyl; R1,R2 = H, C1-4 alkyl, C1-4 alkoxy, Cl, Br, PhO, MeC6H4O, ClC6H4O; n, m = 1, 2, 3] are used to dye cotton and cotton-polyester blends fast green shades. Thus, 1,8-dihydroxy-4,5-dinitroanthraquinone [81-55-0] was dissolved in o-toluidine [95-53-4] and heated, boric acid added, and 1,4-di-o-toluidino-5-hydroxy-8-nitroanthraquinone [6648-60-8] isolated, reduced, and heated with Me chloroformate to give I (R = MeO2C, R1, R2 = 2-Me, n; m = 1) [67006-49-9] which was combined in a paste to give fast green dyeings.