Detail of "3531-19-9"

Reference

Disperse dyes derived from 4-phenylazo-1-naphthylamine and 4-phenylazo-5-hydroxy-1-naphthylamine

Disperse dyes derived from 4-phenylazo-1-naphthylamine and 4-phenylazo-5-hydroxy-1-naphthylamine. Peters, A. T.; Sener, M. E. (Postgrad. Sch. Chem. Chem. Technol., Univ. Bradford, Bradford BD7 1DP, UK). Dyes Pigm., 8(2), 99-118 (English) 1987. CODEN: DYPIDX. ISSN: 0143-7208. DOCUMENT TYPE: Journal CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Application of the Bucherer reaction between 1-naphthol [90-15-3] and alkylamines gave a satisfactory synthesis of N-substituted 1-naphthylamines. A method avoiding the use of pressurized reaction vessels, i. 84166-78-9 is the cas registry number of certain chemical which is used as reagents here.e., reaction of 1-naphthol with alkylamines in the presence of ZnCl2 and HCl, was reported. Coupling of diazotized 6-chloro-2,4-dinitroaniline [3531-19-9] to the above intermediates afforded blue dyes which colored polyester and diacetate fibers in deep shades of generally good fastness to light and sublimation. Similar use as coupling components of 5-hydroxy-1-naphthylamines enabled blue dyes to be obtained without the use of trisubstituted anilines as diazo component. Dyes thus derived from 2-chloro-4-nitroaniline [121-87-9] absorbed at longer wavelength than those from 6-chloro-2,4-dinitroaniline with analogous 1-naphthylamine-based couplers. Similar bathochromic shifts were obsd. in dyes derived from 2-methoxy-1-naphthylamines as coupling components, but these dyes had poor stability. Relations between color and dye structure were reported, and the use of 4-amino-1,8-naphthalimides as diazo components was addnl. investigated. These gave, with N-substituted 1-naphthylamines as coupling components, deep bluish-violet dyes of good fastness. .

Monoazo disperse dyes

Monoazo disperse dyes. Epworth, Richard Edward (Yorkshire Chemicals Ltd., Engl.). Ger. Offen. DE 2703739 18 Aug 1977, 13 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B029-06. PRIORITY: GB 76-4324 4 Feb 1976. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Disperse azo dyes (I; R = Cl, Br; R1 = Me, Ph) were prepd. and used to dye polyester fibers fast blue shades. Thus, 2,4,6-Cl(O2N)2C6H2NH2 [3531-19-9] was diazotized, coupled with 1-C10H7NHCH2CH2OH [2933-59-7], and the resulting azo compd. [3177-13-7] isolated, dried, and treated with Ac2O in DMF contg. 64240-61-5 which is the cas registry number is also used here. Et3N to give I (R = Cl, R1 = Me) [64240-63-7]. The other I were similarly prepd. .