Detail of "17026-81-2"

Reference

Direct dyes

Direct dyes. Przybylski, Chrystian; Gmaj, Jan (Osrodek Badawczo-Rozwojowy Przemyslu Barwnikow "Organika", Pol.). Pol. PL 124118 B2 30 Apr 1984, 4 pp. (Polish). (Poland). CODEN: POXXA7. 131-27-1 is the cas registry number. This chemical is also mentioned in this article. CLASS: IC: C09B031-00. APPLICATION: PL 80-228714 22 Dec 1980. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) The title dyes I (R1 = Me, Et, MeO, EtO; R2 = acyl, MeOCO, EtOCO, PhOCO; R3 = H, alkyl, Ph; M = H, alkali metal, alk. earth metal, NH4; SO3M in 2 or 3 position) are prepd. by coupling diazotized 3-amino-1,5-naphthalenedisulfonic acid (II) [131-27-1] with R1- and R2-substituted m-phenylenediamine, diazotizing the obtained monoazo compd., coupling with 5-amino- and/or 8-amino-2-naphthalenesulfonic acid, diazotizing the obtained disazo compd.(s), and coupling with 7-amino-4-hydroxy-2-naphthalenesulfonic acid (III) [87-02-5] or its N-alkyl or N-Ph deriv. The use of noncarcinogenic R1- and R2-substituted m-phenylenediamine gives dyes having shades and properties similar to those of dyes prepd. with carcinogenic naphthylamine [134-32-7]. Thus, 24.3 parts II was diazotized and coupled with 16.3 parts 5-acetamino-2-ethoxyaniline [17026-81-2], and the resulting monoazo compd. [94099-32-8] was diazotized and coupled with a mixt. of 5-amino- [119-79-9] and 8-amino-2-naphthalenesulfonic acid [119-28-8]. The obtained disazo compds. were diazotized and coupled with III to give a compd. dyeing cellulosic fibers in blue shades. .

Direct dyes

Direct dyes. Przybylski, Chrystian; Gmaj, Jan; Jablonski, Jerzy (Osrodek Badawczo-Rozwojowy Przemyslu Barwnikow "Organika", Pol.). Pol. PL 124163 B2 30 Apr 1984, 4 pp. (Polish). (Poland). CODEN: POXXA7. CLASS: IC: C09B031-00. APPLICATION: PL 80-228716 22 Dec 1980. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) The title dyes I (R = H, OH; R1 = Me, Et, MeO, EtO; R2 = acyl, alkoxycarbonyl, phenoxycarbonyl; NH2 in 6 or 7 position) are prepd. by coupling diazotized 5-amino-2-hydroxybenzoic acid (II) [89-57-6] or 5-amino-2,4-dihydroxybenzoic acid [69938-56-3] with R1- and R2-substituted m-phenylenediamine, diazotizing the resulting azo compd., and coupling it with 6-amino-4-hydroxy-2-naphthalenesulfonic acid (III) [90-51-7] or 7-amino-4-hydroxy-2-naphthalenesulfonic acid [87-02-5]. The use of R1- and R2-substituted m-phenylenediamine in place of carcinogenic 1-naphthylamine [134-32-7] gives dyes having similar shades and good fastness. Thus, 15.3 parts II was diazotized and coupled with 20.4 parts 5-acetamido-2-ethoxyaniline [17026-81-2] at pH 4-5 (adjusted with 20% Na2CO3) giving an azo compd. [94099-23-7] which was diazotized, sepd. 89-57-6 which is the cas registry number of one of substances is just one of reagents here. by filtration, and coupled with 22.4 parts III. The obtained dye [94099-24-8] dyed cellulosic, protein, and polyamide fibers, and leather, in reddish-gray shades. .