GB1473165A - - Google Patents

Info

Publication number
GB1473165A
GB1473165A GB3239774A GB3239774A GB1473165A GB 1473165 A GB1473165 A GB 1473165A GB 3239774 A GB3239774 A GB 3239774A GB 3239774 A GB3239774 A GB 3239774A GB 1473165 A GB1473165 A GB 1473165A
Authority
GB
United Kingdom
Prior art keywords
zinc
cobalt
nickel
thione
copper
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.)
Expired
Application number
GB3239774A
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
Publication of GB1473165A publication Critical patent/GB1473165A/en
Expired legal-status Critical Current

Links

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
    • G03C1/685—Compositions containing spiro-condensed pyran compounds or derivatives thereof, as photosensitive substances
    • 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
    • G03C1/705—Compositions containing chalcogenides, metals or alloys thereof, as photosensitive substances, e.g. photodope systems
    • 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
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Catalysts (AREA)

Abstract

1473165 Photochromic material AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 22 July 1974 [3 Aug 1973] 32397/74 Heading G2C A photo-sensitive layer comprises (a) at least one heterocyclic photochromic spiro-pyrane which can exist in two forms and is selectively converted from one form to another on irradiation according to the scheme wherein R 3 is methyl, phenylthio, phenyl, chloro, bromo, methoxy, hydroxy, naphthyl, 4-chlorophenyl, 4-bromophenyl, 4-hydroxyphenyl or 4-methoxyphenyl; R' 3 is methyl, isopropyl, n-hexyl, benzyl or phenylethyl; R 6 is nitro; R' 6 is hydrogen, or methylthio; R 8 is methoxy; and X is thio, seleno, imido, oxo, aza or dialkylcarbo; and # 1 and # 2 are wavelengths in the ultraviolet and visible light ranges respectively, (b) at least one nitrogencontaining heterocyclic thioether substituted in the α-position to the ring carbon atom of the following Formula: alkylene, alkylidene or when taken together with the N atom and C atom is a benzothiazole, benzoxazole, N-alkyl-imidazole or -thiazole ring and R 1 , R 2 amd R' 2 are alkyl or acylalkyl groups, the open form of the spiropyrane being capable of acting as a catalyst in the conversion of the thioether to a thione which takes place at temperatures of at least 100‹C in accordance with the reaction:- and (c) at least one reagent for forming a visible image selected from (i) at least one metal salt which is a behenate, resinate, naphthenate, benzoate or steorate of silver, cadmium, calcium, copper, cobalt, tin, manganese, magnesium, nickel, lead or zinc, (ii) at least one compound selected from zinc, cobalt or nickel halide and zinc or cobalt thiocyanate. The layer may further contain a semiconducting metal oxide selected from titanium oxide (which may have been doped with copper) and zinc oxide (which may have been doped with nickel and/or cerium). A cobalt, copper or nickel salt which fixes the spiropyrane in the open form may also be present. The visible stable image is formed by different reactions: (1) reduction, by the thione produced, of the metal carboxylate(s) or (2) formation of a complex of the thione with the zinc, cobalt or nickel halide or the zinc or cobalt thiocyanate.
GB3239774A 1973-08-03 1974-07-22 Expired GB1473165A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7328538A FR2239703B1 (en) 1973-08-03 1973-08-03

Publications (1)

Publication Number Publication Date
GB1473165A true GB1473165A (en) 1977-05-11

Family

ID=9123578

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3239774A Expired GB1473165A (en) 1973-08-03 1974-07-22

Country Status (5)

Country Link
JP (1) JPS5053284A (en)
DE (1) DE2436985A1 (en)
FR (1) FR2239703B1 (en)
GB (1) GB1473165A (en)
NL (1) NL7410513A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6355540A (en) * 1986-08-26 1988-03-10 Agency Of Ind Science & Technol Optical recording medium

Also Published As

Publication number Publication date
DE2436985A1 (en) 1975-02-13
NL7410513A (en) 1975-02-05
JPS5053284A (en) 1975-05-12
FR2239703B1 (en) 1976-05-07
FR2239703A1 (en) 1975-02-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee