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
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.
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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6355540A (en) * | 1986-08-26 | 1988-03-10 | Agency Of Ind Science & Technol | Optical recording medium |
-
1973
- 1973-08-03 FR FR7328538A patent/FR2239703B1/fr not_active Expired
-
1974
- 1974-07-22 GB GB3239774A patent/GB1473165A/en not_active Expired
- 1974-08-01 DE DE19742436985 patent/DE2436985A1/en active Pending
- 1974-08-02 JP JP8817574A patent/JPS5053284A/ja active Pending
- 1974-08-05 NL NL7410513A patent/NL7410513A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5053284A (en) | 1975-05-12 |
| NL7410513A (en) | 1975-02-05 |
| FR2239703A1 (en) | 1975-02-28 |
| DE2436985A1 (en) | 1975-02-13 |
| FR2239703B1 (en) | 1976-05-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |