UST997004I4 - Acylhydrazinophenylthiourea nucleating agents and photographic emulsions and elements containing such agents - Google Patents

Acylhydrazinophenylthiourea nucleating agents and photographic emulsions and elements containing such agents Download PDF

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Publication number
UST997004I4
UST997004I4 US06/105,317 US10531779A UST997004I4 US T997004 I4 UST997004 I4 US T997004I4 US 10531779 A US10531779 A US 10531779A US T997004 I4 UST997004 I4 US T997004I4
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US
United States
Prior art keywords
agents
elements containing
photographic emulsions
nucleating agents
silver halide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
US06/105,317
Inventor
Ronald E. Leone
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to US06/105,317 priority Critical patent/UST997004I4/en
Application granted granted Critical
Publication of UST997004I4 publication Critical patent/UST997004I4/en
Pending legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/485—Direct positive emulsions
    • G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure
    • G03C1/48546—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent
    • G03C1/48561—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure characterised by the nucleating/fogging agent hydrazine compounds

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Novel 3,3-disubstituted acylhydrazinophenylthiourea nucleating agents are disclosed as well as silver halide photographic emulsions and elements containing silver halide grains capable of forming an internal latent image having the nucleating agents adsorbed to the surface of the silver halide grains. Imaging processes in which these materials participate are also disclosed.
US06/105,317 1979-12-19 1979-12-19 Acylhydrazinophenylthiourea nucleating agents and photographic emulsions and elements containing such agents Pending UST997004I4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US06/105,317 UST997004I4 (en) 1979-12-19 1979-12-19 Acylhydrazinophenylthiourea nucleating agents and photographic emulsions and elements containing such agents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/105,317 UST997004I4 (en) 1979-12-19 1979-12-19 Acylhydrazinophenylthiourea nucleating agents and photographic emulsions and elements containing such agents

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US5658879A Division 1979-07-11 1979-07-11

Publications (1)

Publication Number Publication Date
UST997004I4 true UST997004I4 (en) 1980-08-05

Family

ID=22305150

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/105,317 Pending UST997004I4 (en) 1979-12-19 1979-12-19 Acylhydrazinophenylthiourea nucleating agents and photographic emulsions and elements containing such agents

Country Status (1)

Country Link
US (1) UST997004I4 (en)

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