Detail of "21265-50-9"

Reference

Phase hologram formation

Phase hologram formation. Clark, John Andrew; Adshead, Alan; Butcher, David Walter (Ciba-Geigy A.-G. , Switz.). Eur. 15708-41-5 and 21265-50-9 are also occured in this study. Pat. Appl. EP 207895 A2 7 Jan 1987, 17 pp. DESIGNATED STATES: R: BE, CH, DE, FR, GB, IT, LI. (European Patent Organization) CODEN: EPXXDW. CLASS: ICM: G03C005-44. ICS: G03H001-18. APPLICATION: EP 86-810280 19 Jun 1986. PRIORITY: GB 85-16054 25 Jun 1985. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) A hologram is prepd. by exposing a photosensitive Ag halide emulsion of which 380 wt.% of the halide is bromide, developing in a photog. developer, converting the residual AgBr to AgI by use of an aq. iodide soln., removing the developed Ag but leaving the AgI either by use of a bleach-fix soln. or by rehalogenating the developed Ag to AgBr or AgCl using a brominating or chlorinating Ag bleaching soln. and simultaneously or subsequently fixing out the thus formed AgBr or AgCl using a fixing agent under such conditions that AgI is not dissolved from the material. A AgBr emulsion (mean crystal size 0.035 m) was optically sensitized to 633 nm, coated on a transparent film support, halog. exposed using a Denisyuk exposure method using a brushed Al plate as an object, developed in a soln. contg. Na2SO3, hydroquinone, and Na2CO3, stirred in an AcOH soln., treated in a KI soln. to convert the bromide in the emulsion to iodide, washed, bleached in a soln. contg. KBr and Fe(NH4)EDTA, the rebrominated Ag fixed in a Na2S2O3 soln., washed, and dried to give a phase hologram which had a brightness of ~20% and a scattering of <2%. .

Silver photographic image reduction solution

Silver photographic image reduction solution. Hayashi, Katsumi; Okada, Masahiro (Fuji Photo Film Co., Ltd., Japan). Jpn.There are some reagents with their cas registry numbers 1330-39-8 and 21265-50-9 are used in this study. Kokai Tokkyo Koho JP 03007936 A2 16 Jan 1991 Heisei, 7 pp. (Japan). CODEN: JKXXAF. CLASS: ICM: G03C005-29. ICS: G03F007-32. APPLICATION: JP 89-142690 5 Jun 1989. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) The title soln. contains an aminopolycarboxylic acid ferric chelate, a complex-forming agent, and a dye. .