摘要:
HEAT 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.
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.
摘要:
CYANINE DYES WHICH FEATURE A PYRROLO(2,3-B)QUINOXALINE NUCLEUS OR A PYRROLO(2,3-B)PYRAZINE NUCLEUS, JOINED AT THE 3-CARBON ATOM THEREOF TO THE METHINE LINKAGE OF THE CYANINE DYE, SENSITIZE PHOTOGRAPHIC SILVER HALIDE EMULSIONS.
摘要:
NOVEL POLYMETHINE DYES ARE PROVIDED WHICH FEATURE AN IMIDAZOLE RING JOINED AT THE CARBON ATOM IN THE 5POSITION OF THE IMIDAZOLE RING TO A DIMETHINE LINKAGE, THE IMIDIAZOLE RING HAVING FUSED TO THE (A) SIDE THEREOF THE NON-METALLIC 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 A NOVEL PHOTOGRAPHIC SILVER HALIDE EMULSIONS, INCLUDING DIRECT POSITIVES EMULSION CONTAINING THE DYES OF THE INVENTION.
摘要:
NOVEL PHOTOGRAPHIC MATERIALS COMPRISING A LIGHT-SENSITIVE LAYER AND A LIGHT-ABSORBING MATERIAL ARE DESCRIBED. THE LIGHT-ABSORBING MATERIALS COMPRISE COLORED COMPONENTS WHICH ARE DECOLORIZED BY VARIOUS FORMS OF ENERGY, SUCH AS, FOR EXAMPLE HEAT. THE NOVEL LIGHT-ABSORBING MATERIALS ARE USEFUL IN ANTIHALATION LAYERS PARTICULARLY ADAPTED FOR PHOTOTOGRAPHIC ELEMENTS DESIGNED FOR DEVELOPMENT WITH HEAT.
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.
摘要:
Formylmethylene dye intermediates are prepared by reacting a heterocyclic quaternary salt with a complex of dialkylformamide and inorganic acid halide followed by hydrolysis. Cyanine dyes are prepared by reacting such formylmethylene dye intermediates with heterocyclic quaternary salt.