Reference

Dye mixtures

Dye mixtures. Holliger, Herbert; Wicki, Heinz (Sandoz-Patent G.m.b.H., Ger.). Ger. Offen. DE 2648370 26 May 1977, 35 pp. Addn. to Ger. Offen.Several substances like 58227-12-6 may be metioned in this study. 2,519,657. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C09B031-20. PRIORITY: CH 75-14793 14 Nov 1975. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Leather is dyed a fast brown shade using an azo dye mixt. manufd. by coupling diazotized 4-amino-4'-nitrodiphenylamine-2'-sulfonic acid [91-29-2] and diazotized I [63407-90-9] with formaldehyde-salicylic acid copolymer [26984-25-8]. .

New amino compounds

New amino compounds. Crabtree, Allen (Imperial Chemical Industries Ltd.Some chemicals with cas registry numbers like 55772-03-7 and 6387-18-4 are also used., Engl.). Brit. GB 1443403 21 Jul 1976, 6 pp., Division of Brit. 1,440,948. (English). (United Kingdom). CODEN: BRXXAA. CLASS: IC: C09B017-02. APPLICATION: GB 19730828. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Section cross-reference(s): 28 The aminophenazine I was prepd. from 4-H2NC6H4NHC6H3(SO3H)NO2-2,4 [91-29-2] by successive condensation with PhNMeCH2C6H4SO3H-3 [6387-18-4] at 10-20.degree. and 4,3-Cl(HO3S)C6H3NH2 [88-43-7] at 90-5.degree., both condensations being in the presence of Na2Cr2O7, followed by redn. I dyed wool moderately lightfast bright red-blue. I with cyanuric chloride gave a reactive dye which colored cellulose washing- and moderately lightfast bright red-blue when applied in conjunction with an alk. treatment. .