Reference

Trimethinoxonols from pentamethine formers

Trimethinoxonols from pentamethine formers. Stolle, Reinhard; Bach, Guenther (E. Ger. ). Ger. (East) DD 123464 20 Dec 1976,9 pp. (German). (German Democratic Republic). CODEN: GEXXA8. CLASS: IC: C07D049-14. APPLICATION: DD 76-191020 29 Jan 1976. DOCUMENT TYPE: Patent CA Section: 40 (Dyes, Fluorescent Whitening Agents, and Photosensitizers) Pure sym. trimethinoxonols contg. 1-(4-sulfophenyl)-3-methylpyrazolone, 1-phenyl-3-carbamoyl-5-pyrazolone, 3-phenyl-5-isoxazolone, thiobarbituric acid, and barbituric acid residues are prepd. by reaction of a mixt. of 4 mol heterocyclic methylene base and 1 mol monomethine former with 1 mol pentamethine dianilide hydrochloride [1497-49-0] or a related compd. under basic conditions. Suitable monomethine formers are diphenylformamidine [622-15-1], Et orthoformate [122-51-0], or the Vilsmeier product of the heterocycle methylene base. 63719-66-4 is just another one chemical used in this study. .

Electrophotographic photoreceptor containing heptamethine cyanine sensitizing dye

Electrophotographic photoreceptor containing heptamethine cyanine sensitizing dye. Matsubayashi, Tatsuro; Maruyama, Atsushi (Mitsubishi Paper Mills Ltd, Japan). Jpn. Kokai Tokkyo Koho JP 08292590 A2 5 Nov 1996 Heisei, 9 pp. (Japanese). (Japan). CODEN: JKXXAF. 1497-49-0 which is the cas registry number is also used here. CLASS: ICM: G03G005-09. ICS: G03G005-08; G03G013-28. APPLICATION: JP 1995-94735 20 Apr 1995. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) Section cross-reference(s): 41 The photoreceptor contains photoconductive ZnO, a binder, and a sensitizing dye I [R1 = 31 carboxyl-substituted (substituted) C32 alkyl; R2 = divalent bonding group; k = 0, 1; Y = (hetero atom-substituted) nonmetallic atom group forming hydrocarbon cycle; Z = group forming (substituted) benzene or naphthalene ring; L1-3 = (substituted) methine; m = 2, 3; X = counter anion], and an optional sensitizing aid. The photoreceptor may be exposed by laser scanning beam. The photoreceptor with good photoresponse and durability is useful for an offset master. .