摘要:
Novel polymethine dyes are provided which feature an imidazole ring joined at the carbon atom in the 5-position of the imidazole ring to a dimethine linkage, the imidazole ring having fused to the (a ) side thereof the nonmetallic atoms required to complete at least one fused ring, and a second desensitizing nucleus joined at a carbon thereof to the dimethine linkage. The invention also provides novel photographic silver halide emulsions, including direct positive emulsions containing the dyes of the invention.
摘要:
COMPOUNDS CONTAINING A HETEROCYCLIC NITROGEN ATOM SUBSTITUTED BY AN -OR GROUP ARE USEFUL AS SENSITIZERS FOR PHOTOCONDUCTORS IN ELECTROPHOTOGRAPHIC ELEMENTS.
摘要:
ENERGY-SENSITIVE COMPOUNDS CONTAINING A HETEROCYCLIC NITROGEN ATOM SUBSTITUTED WITH AN -OR GROUP WHERE R IS AN ALKYL, ARYL, OR ACYL RADICAL, ARE PHOTOCHEMICAL INITIATORS FOR THE POLYMERIZATION OF VINYL MONOMERS.
摘要:
ENERGY-SENSITIVE COMPOUNDS CONTAINING A HETEROCYCLIC NITROGEN ATOM SUBSTITUTED WITH AN -OR GROUP ARE CROSSLINKING AGENTS FOR POLYMERS HAVING HARDENABLE GROUPS.
摘要:
A class of energy-sensitive compounds containing heterocyclic nitrogen atoms substituted with an-OR group fragment under the influence of various forms of energy to form a dye base, a proton and an aldehyde, these materials being useful in image reproduction.