Detail of "2309-94-6"

Reference

Cyanoazobenzene dyes

Cyanoazobenzene dyes. Toth, Istvan (Sandoz A.-G., Switz.). Patentschrift (Switz.) CH 639407 A 15 Nov 1983, 3 pp. (German). (Switzerland). CODEN: SWXXAS. CLASS: IC: C09B043-42. APPLICATION: CH 79-1632 19 Feb 1979. DOCUMENT TYPE: Patent CA Section: 41 (Dyes, Organic Pigments, Fluorescent Brighteners, and Photographic Sensitizers) Cuprous halides formed in the reaction of o-halo or o,o-dihalo azo compds. with HCN or its salts in the presence of a cuprous compd. 29838-11-7 and 24170-60-3 which are cas registry numbers are also used here. can be removed from the reaction mixt. by mech. means if the reaction is carried out in a polar, protic solvent in which the cuprous salts are insol. For example, a stirred mixt. of 2,6,4-Br2(O2N)C6H2N:NC6H3(NHCOEt)NEt2-2,4 [29838-11-7] 52.7, CuCN 9, and MeO(CH2CH2O)2H (I) [111-77-3] 790 parts was heated at 68-70° for 14 h and heated to 140°, the product filtered, the residue washed with 130 parts hot I, and the combined filtrates were distd. to remove 600 parts I. The distn. residue at 90° was mixed with 100 parts H2O and cooled to 20° to ppt. cryst. II [2309-94-6], which was filtered, washed, and dried; the Cu content of II was 300-1000 ppm. The mother liquor was distd. to recover I. .

Strength comparison by reflectance measurement - different case studies

Strength comparison by reflectance measurement - different case studies. Joshi, H. D.; Joshi, D. H.; Gandhi, R. S.There are some reagents with their cas registry numbers 2309-94-6 and 12217-86-6 are used in this study. (Man-Made Text. Res. Assoc., Surat, India). Colourage, 37(19), 24-31 (English) 1990. CODEN: COLOBG. ISSN: 0010-1826. DOCUMENT TYPE: Journal CA Section: 40 (Textiles and Fibers) Colorimetric reflectance measurements of polyester fabrics dyed with 6 typical dyes indicated that color strength of the dyes was measurable only on a relative basis. Factors affecting the measurements include concn. of the dye bath and the wavelength of the light used. .