Detail of "101-18-8"

Reference

Reversible diazophotographic materials

Reversible diazophotographic materials. Ohno, Shin (Japan Broadcasting Corp., Japan). Japan. Kokai JP 51101522 8 Sep 1976 Showa, 5 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: G03C001-54. APPLICATION: JP 75-26268 4 Mar 1975. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic Processes) Diazo copying materials contg. diphenylamine deriv.-type diazonium salts and appropriate couplers have reversal characteristics and are useful for either pos.-to-pos. or pos.-to-neg.There are some reagents with their cas registry numbers 101-18-8 and 2367-19-3 are used in this study. type copying process. The exposure to light results in formation of neg. blue images, and subsequent NH3 treatment makes the exposed area transparent while the unexposed area becomes orange. Meanwhile, when the unexposed material is NH3-treated, and subsequently exposed to light, neg. blue images are formed on an orange background, and the images can be erased by retreating with NH3; hence the material can be used repeatedly. Thus, p-diazodiphenylamine tetrafluoroborate 0.75 g and m-hydroxydiphenylamine (coupler) 0.5 g were dissolved in 150 g of a 10% vinyl acetate-vinyl chloride copolymer soln. [in THF-BuOH (3:2) mixt.] and coated on a glass plate which was exposed to a Hg lamp (3000-5000 .ANG.) to give neg. bluish green (6450 .ANG.) images on a yellow (4000 .ANG.) background, and subsequently treated with NH3 to give orange (4900 .ANG.) pos. images with a transparent background. Both the blue images (before NH3 treatment) and orange images were stable under normal room light. When a similarly prepd. diazo material was treated with NH3 prior to exposure, the material could be used repeatedly to form neg. bluish green images on an orange background. .

Photographic element for color diffusion transfer

Photographic element for color diffusion transfer. Kobayashi, Ryuichiro; Kanbe, Masaru; Mizukura, Noboru; Suginaka, Shunji; Kunieda, Naoshi (Konishiroku Photo Industry Co., Ltd.In this study，101-18-8 is also used., Japan). Ger. Offen. DE 2729823 5 Jan 1978, 114 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: G03C005-54. PRIORITY: JP 76-78777 2 Jul 1976.Several reagents such as 101-18-8 is used here. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic Processes) One hundred fifteen dye-releasing redox (DRR) compds. are described for use in color diffusion-transfer materials of the shift-type. The DRR compds. contg. an azo dye group linked through arom. groups and an acyl-substituted amino group. Thus, a transparent poly(ethylene terephthalate) support was coated with a blue-sensitive gelatin-Ag(I,Br) emulsion layer, a layer contg. gelatin and I (8.0 mg/100 cm2), and a gelatin protective layer. This material was then exposed through a 30 step Ag wedge (d. difference of 0.15), contacted with an image-receptor sheet, and processed with an alk. soln. for 2 min to give a transfer image with a Dmax of 1.90 and a Dmin of 0.22. ..