Detail of "52218-35-6"

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Preparation of water-soluble reactive azo dyes for coloring fibers

Preparation of water-soluble reactive azo dyes for coloring fibers. Corso, Anthony J.; Meininger, Fritz; Roe, Kathe (American Hoechst Corp., USA). Eur. 52218-35-6 and 6361-41-7 are cas registry numbers. These chemicals are also mentioned in this article. Pat. Appl. EP 210492 A1 4 Feb 1987, 19 pp. DESIGNATED STATES: R: CH, DE, FR, GB, IT, LI. (European Patent Organization) CODEN: EPXXDW. CLASS: ICM: C09B062-51. ICS: D06P001-384. APPLICATION: EP 86-109415 10 Jul 1986. PRIORITY: US 85-756482 18 Jul 1985. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Section cross-reference(s): 40 Title compds. I (M = H, alkali metal; R = C1-3 alkyl, Ph; X = vinyl or CH2CH2R1 where R1 = an alkali-eliminatable substituent), which yield scarlet shades on cellulosic and carboxamide group-contg. fibers, are prepd. 2-Amino-6-(b-sulfatoethylsulfonyl)-1-naphthalenesulfonic acid was diazotized and coupled with 6,8-HO3S(HO)C10H5NHCOPh-2, forming I (M = Na, R = Ph, X = CH2CH2OSO3Na), which had lmax 493 nm and dyed cotton in a scarlet shade. .