Reference

Reactive disazo dyes

Reactive disazo dyes. (Sumitomo Chemical Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59174652 A2 3 Oct 1984 Showa, 10 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09B062-513. APPLICATION: JP 83-50205 24 Mar 1983. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) The title dyes [I; R = halogen; R1 = (un)substituted lower alkyl; R2 = H, (un)substituted lower alkyl; R3 = H, Me, sulfo; R4, R5 = OH, NH2 (excluding R4 = R5); R6, R7, R8 = H, Cl, Me, MeO, Et, EtO, sulfo, carboxy; R9 = SO2CH:CH2; SO2CH2CH2R10; R10 = alkali-dissociable group; Z = (un)substituted phenylene or naphthylene] or their salts were prepd. and used for dyeing cotton in greenish blue shades. Thus, 4-methylaniline-2-sulfonic acid [88-44-8] was diazotized and coupled with H acid mono-Na salt [5460-09-3] to give a monoazo compd. (II). Cyanuric chloride [108-77-0] was condensed with 2,4-diaminobenzenesulfonic acid [88-63-1] and then with m-EtNHC6H4SO2CH2CH2OSO3H [83574-63-4]. The condensation product was diazotized and coupled with II to give I (R = Cl; R1 = Et; R2 = R3 = R8 = H; R4 = NH2; R5 = OH; R6 = 2-SO3H; R7 = 4-Me; R9 = SO2CH2CH2OSO3H; Z = m-C6H4; 5'-bonding) [94492-77-0].

Fiber-reactive navy disazo dyes

Fiber-reactive navy disazo dyes. Corso, Anthony J.; Roe, Kathleen M. (American Hoechst Corp., USA). Eur. Pat. Appl. EP 122600 A1 24 Oct 1984, 12 pp. DESIGNATED STATES: R: CH, DE, FR, GB, IT, LI. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: C09B062-513; D06P003-66; C09B067-26. APPLICATION: EP 84-104104 12 Apr 1984. PRIORITY: US 83-485691 18 Apr 1983. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) The title dyes have the general structure I, where M is H or an alkali or alk. earth metal and Q and Q1 are the same or different and represent CH:CH2 or CH2CH2X (X = OH, Br, Cl, sulfato, etc.) but not simultaneously CH2CH2OSO3M. I can be prepd. as powders or as liq. compns. contg. 5-45% dye and 0-6% inert inorg. salt and adjusted to pH 2.5-4.5. Thus, coupling of H acid mono-Na salt [5460-09-3] with diazotized 4-H2NC6H4SO2CH:CH2 [25781-90-2] at pH 1-2 and than with diazotized 3,4-H2N(MeO)C6H3SO2CH2CH2OSO3H [10079-20-6] at pH 6.0-6.5 followed by spray drying gave I (Q = CH2CH2OSO3Na, Q1 = CH:CH2, M = Na) [93912-56-2].