Photographic products

The preparation and properties of these tertiary aminimides, as weU as suggested uses as adhesives (qv), antistatic agents (qv), photographic products, surface coatings, and pharmaceuticals, have been reviewed (76). Thermolysis of aminimides causes N—N bond mpture foUowed by a Curtius rearrangement of the transient nitrene (17) intermediate to the corresponding isocyanate ... 

In most color photographic products, organic compounds such as couplers or redox dye releasers are added to the melted emulsions before coating. These compounds are essential to the development reactions that produce the dye molecules composing color images. 

Silver bromide is significantly more photosensitive than silver chloride, resulting in the extensive use of silver bromide in photographic products. 

A primary use for iodine is as a catalyst in the production of acetic acid (qv) (39). Iodine is converted to compounds used in mbber, stabilizers, animal feed supplements, colorants, pharmaceuticals, sanitary products, and photographic products. 

Evans. S. Elwood, J. K. (Eastman Kodak Co.) Photographic Products and Processes Employing Novel Non-Diffusable Magenta Dye-releasing Compounds and Precursors Thereof. U.S. Patent 4,420,550, Dec. 13, 1983. 

About 2.47 million kg of silver are lost each year to the domestic biosphere, mostly (82%) as a result of human activities. As discussed later, the photography industry accounts for about 47% of all silver discharged into the environment from anthropogenic sources. In 1990, about 50% of the refined silver consumed domestically was used to manufacture photographic products 25% in electrical and electronic products 10% in electroplated ware, sterlingware, and jewelry 5% in brazing alloys and 10% in other products and processes. 

Color measuring instruments, 7 323-326 Color-order systems, 7 308-311, 325-326 Color perception, 7 303-304 Color photographic products, 19 197 Color photography, 19 231-272. See also Chromogenic materials additive, 19 284 additive mixing in, 19 240-241 dye stability in, 19 263... 

These considerations are important in regard to different systems such as paints, cements, adhesives, photographic products, water purification, sewage disposal, emulsions, chromatography, oil recovery, paper and print industry, microelectronics, soaps and detergents, catalysts, and biological systems (such as cell, virus). In some... 

Many photographic products are based on the photolysis of silver halides. These materials are especially suitable for use where short exposure times are needed. Thus, high speed photographic films are manufactured for use in cameras. Also, coatings of silver halide on paper are utilized in the on-line production of colour reflection prints where rapid passage through an exposure device is necessary. 

Uses. NC isused in single-base, smokeless propellants(NC non-expl ingredients) double -base, smokeless proplnts(NC NG) triple -base, smokeless proplnts(NC, NG nitroguanidine) and in dynamites. Commercially NC is used in pharmaceuticals, lacquers, and photographic products(Ref 80)(For more detailed info on NC s, see various types of NC listed in Table and discussed separately, next page)... 

In the petroleum industry, the sulfuric acid and hydrogen fluoride employed as alkylation catalysts must be substantially anhydrous to be effective, and steel equipment is satisfactory. Where conditions are not anhydrous, lead-lined, monel-lined, or enamel-lined equipment is satisfactory. In a few cases, copper or tinned copper is still used, for example, in the manufacture of pharmaceutical and photographic products to lessen contamination with metals. 

Caution This reducer gives off a strong odor of sulfur dioxide and should be used in a well-ventilated room. Do not use near sensitized photographic products. 

H Yield light-sensitive Ag complexes used for photographic products 517.518... 

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