C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
96/185, 96/43, 2
C09B 23/02 (2006.01) G03C 1/14 (2006.01) G03C 1/83 (2006.01) G03C 7/02 (2006.01)
Patent
CA 1079292
Abstract of the Disclosure Novel o-nitro-o-azaarylidene dyes are provided in which the o-nitro-o-azaaryl group of the dye is joined through a methine linkage to a basic heterocyclic nucleus containing an electron donating atom. These dyes are photobleachable. The photobleachable properties of the dyes make them useful in a variety of photographic appli- cations. For example, they can be used 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; or to provide photobleachable halation protection in photographic, including photothermographic, elements having coated thereon a photosensitive imaging layer. The dyes are also useful in filter layers.
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