Reference

Azo disperse dyes

Azo disperse dyes. Baumann, Werner (Sandoz A.-G., Switz.). Ger. (East) DD 209641 A5 16 May 1984, 15 pp. (German). (German Democratic Republic). CODEN: GEXXA8. CLASS: IC: C09B029-085; C09B029-24; C09B043-40. APPLICATION: DD 83-247994 16 Feb 1983. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Red to blue disperse dyes (I; R = benzene or naphthalene coupler residue) with good fastness and color strength are described. Thus, diazotization of 5,2,4-NCS(O2N)2C6H2NH2 [53488-27-0] and coupling with m-MeC6H4NEt2 [91-67-8] gave I [R = C6H3(NEt2)Me-4,2] (II) [87855-55-8], lmax 602 nm (CH2Cl2), also prepd. by reaction of its chloro analog [87855-56-9] with KSCN. II gave fast, level blue dyeings on polyester fibers.

Monoazo dyes for polyamides

Monoazo dyes for polyamides. Hurter, Rudolf (Ciba-Geigy A.-G. , Switz.). Eur. Pat. Appl. EP 102325 A1 7 Mar 1984, 111 pp. DESIGNATED STATES: R: BE, CH, DE, FR, GB, IT, LI. 90492-59-4 which is the cas registry number of one of substances is just one of reagents here. (German). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: C09B029-01; C09B062-008; C07C147-12. ICA: D06P001-02. APPLICATION: EP 83-810341 29 Jul 1983. PRIORITY: CH 82-4696 4 Aug 1982. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Fast yellow to red dyes (I) are prepd., where R is the radical of a benzene, naphthalene, or heterocyclic coupler, R1 = H, halogen, carboxy, C1-6 alkyl, etc., and R2 = H, halogen, C1-6 alkyl, C1-6 alkoxy, C2-6 alkanoylamino, or C1-6 alkylsulfonylamino. R may also contain a fiber-reactive substituent. Thus, diazotization of 2-C10H7SO2C6H3(NH2)SO3H-2,4 [90492-59-4] (prepn. described) and coupling with 3-MeC6H4NEt2 [91-67-8] gave II [90492-60-7]. II was applied to polyamide material from a weakly acidic bath to produce yellowish red shades with good buildup and good fastness to light, HCHO, and wet processing. Other I were similarly prepd. .