Reference

Bisazo compounds and their use for dyeing fibers

Bisazo compounds and their use for dyeing fibers. Shirasaki, Toshitaka; Sotogoshi, Teruhito (Nippon Kayaku Co., Ltd. , Japan). Ger. Offen. DE 3403326 A1 9 Aug 1984, 24 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B033-048; C09B045-28; D06P001-39; D06P001-10. APPLICATION: DE 84-3403326 31 Jan 1984. PRIORITY: JP 83-13674 1 Feb 1983. 93031-65-3 which is the cas registry number is also used here. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Section cross-reference(s): 40 Azo compds. (I; R = OH, OMe; R1, R2 = H, Cl, Me, sulfo; 3 or 4 sulfo groups per mol.) or their Cu complexes were prepd. and used as fast blue or navy blue dyes for cellulose fibers and esp. for their blends with polyester fibers in single-bath, single-step dyeing under acidic conditions at high temp. Thus, [4,6,2-HO(HO3S)C10H5]2NH [87-03-6] was coupled with diazotized 2,6,4-H2N(O2N)(HO3S)C6H2OH [96-93-5] at <10° and pH 6.5-7.0 and then with diazotized 2,4,6-H2N(O2N)(HO3S)C6H2OH [96-67-3] at <10° and pH 8-9 to give I (R = OH; A, 3-NO2, R1 = 5-SO3H; B, 5-NO2, R2 = 3-SO3H) (II) [93031-66-4], a light- and washfast blue dye for cotton knit fabric. Copperization of II (CuSO4, NH4OH) gave the corresponding 2:1 Cu complex [93081-38-0], which produced a fast deep reddish blue dyeing on a polyester-cotton knit when applied with Kayalon Polyester Blue 2R-2F from an aq. bath at 130° and pH 5. Twelve other I and their Cu complexes were also prepd. .

Chelatable azo dyes and their use in image production

Chelatable azo dyes and their use in image production. Schenk, Guenther; Bergthaller, Peter; Heidenreich, Holger; Wolfrum, Gerhard (Agfa-Gevaert A.-G.In this study，93972-44-2 is also used. , Fed. Rep. Ger.). Ger. Offen. DE 3312500 A1 11 Oct 1984, 63 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B029-36; C09B045-14; C09D011-16; G03C005-54; G03C007-26. APPLICATION: DE 83-3312500 7 Apr 1983. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Section cross-reference(s): 74 The title dyes, which give lightfast blue-green complexes when treated with Cu or Ni ions, are represented by general structure I, where R is a group capable of forming a 5-membered chelate ring; R1-R4 = H, F, Cl, NO2, alkyl, acylamino, etc., or R3R4 together form a 1,3-oxathiolS,S-dioxide ring; R5 = aryl, 2-thienyl, or 3-thienyl; and R6 = H, halogen, or alkyl. I can be used directly, e.g. in inks for ink-jet processes, or, when bound by means of an alkali-cleavable bond to a carrier residue contg. 31 ballast group, in diffusion-transfer color photog. film. Typical dyes include II [93972-44-2], prepd. by diazotizing 3,4,5-H2N(HO)(O2N)C6H2SO3H [96-93-5] and coupling with 5-phenyl-4-(2-thienyl)imidazole [93972-55-5], and III [94008-73-8], prepd. by reaction of 6-[1-[4-(chlorosulfonyl)phenylsulfonyl]tetradecyl]-2,3-dimethyl-5-prop yl-1,4-benzoquinone [93972-61-3] with 4-(3-amino-p-tolyl)-5-(5-chloro-2-thienyl)imidazole [93972-62-4] followed by coupling with diazotized 3,4,5-H2N(HO)(O2N)C6H2SO2NMe2 [93972-45-3]. .