Gas separation: apparatus – Electric field separation apparatus – Electrode cleaner – apparatus part flusher – discharger – or...
Patent
1975-02-03
1976-10-26
Louie, Jr., Won H.
Gas separation: apparatus
Electric field separation apparatus
Electrode cleaner, apparatus part flusher, discharger, or...
96 48QP, 96 48HD, 96 50R, 96 63, 96 89, 96 87R, 96101, 961141, 96 84R, 96 84UV, 260240A, G03C 524, G03C 526
Patent
active
039881547
ABSTRACT:
Novel o-nitro-substituted arylidene dyes are provided in which the o-nitro aryl group of the arylidene dye is joined through a methine chain linkage to a basic heterocyclic radical containing an electron donating atom. These dyes are photobleachable. The photobleachable properties are useful to provide light-sensitive elements in which images can be formed in or on a support by exposure to light to which the dye is sensitive and to provide photobleachable halation protection in photographic elements having coated thereon a photographic imaging layer. The o-nitro-substituted arylidene dyes can be used for antihalation purposes in photothermographic elements. The dyes can be incorporated within silver halide emulsions to reduce internal light scattering (i.e., internal halation) or to desensitize the emulsion. The dyes are also useful in filter layers.
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patent: 3705895 (1972-12-01), Levy et al.
Eastman Kodak Company
Louie, Jr. Won H.
Thomas C. O.
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