GB1251609A - - Google Patents
Info
- Publication number
- GB1251609A GB1251609A GB1251609DA GB1251609A GB 1251609 A GB1251609 A GB 1251609A GB 1251609D A GB1251609D A GB 1251609DA GB 1251609 A GB1251609 A GB 1251609A
- Authority
- GB
- United Kingdom
- Prior art keywords
- protective layer
- layer
- gelatine
- diglycidyl ether
- light
- 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
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/30—Hardeners
Abstract
1,251,609. Hardened light-sensitive silver halide material. AGFA-GEVAERT A.G. June 2, 1970 [June 4, 1969], No.26514/70. Heading G2C. A photographic material comprises at least one light-sensitive silver halide emulsion layer and at least one protective layer in which the protective layer contains formaldehyde and/or glyoxal, as a hardener, and one or more of the emulsion layers contain, as hardener, one or more compounds which contain two expoxide groups e.g. a diglycidyl ether, bis-(2,3-epoxypropyl)ethylamine, ethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, the diglycidyl ester of phthalic acid and 2, 4, 6-triglycidyl cyanurate. The emulsion layers and the protective layer both preferably comprise gelatine as a binder. The molar ratio of formaldehyde or glyoxal to expoxides is preferably between 5 : 1 and 1 : 5. Preferably 0À1 to 1À5g of epoxide is used per 100g of gelatine in an emulsion which is ready for casting, and 0À6 to Sg of formaldehydes per 100g of gelatine protective layer. Using this invention a mechanically firm layer which undergoes only a small amount of swelling without causing any significant loss in sensitivity and gradation. The permeability to U.V. light is not impaired and the layer may be applied rapidly, i.e. in a very concentrated form.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691928356 DE1928356A1 (en) | 1969-06-04 | 1969-06-04 | Photographic silver halide emulsion with reduced swelling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1251609A true GB1251609A (en) | 1971-10-27 |
Family
ID=5736029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1251609D Expired GB1251609A (en) | 1969-06-04 | 1970-06-02 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3676144A (en) |
| BE (1) | BE751134A (en) |
| DE (1) | DE1928356A1 (en) |
| FR (1) | FR2049930A5 (en) |
| GB (1) | GB1251609A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5091315A (en) * | 1973-12-13 | 1975-07-22 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53293B2 (en) * | 1973-12-24 | 1978-01-07 | ||
| US3989529A (en) * | 1974-10-29 | 1976-11-02 | Gaf Corporation | Hydrophilic coupler solutions |
| DE2759100A1 (en) * | 1977-12-30 | 1979-07-05 | Agfa Gevaert Ag | PROCESS FOR CURING COLOR PHOTOGRAPHIC SILVER HALOGENIDE EMULSION COATINGS |
| EP0261281B1 (en) * | 1986-09-23 | 1990-04-25 | Agfa-Gevaert N.V. | Photographic surface layers comprising dextran derivatives |
-
1969
- 1969-06-04 DE DE19691928356 patent/DE1928356A1/en active Pending
-
1970
- 1970-05-29 BE BE751134D patent/BE751134A/en unknown
- 1970-06-02 GB GB1251609D patent/GB1251609A/en not_active Expired
- 1970-06-02 US US42865A patent/US3676144A/en not_active Expired - Lifetime
- 1970-06-04 FR FR7020574A patent/FR2049930A5/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5091315A (en) * | 1973-12-13 | 1975-07-22 | ||
| JPS52370B2 (en) * | 1973-12-13 | 1977-01-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| US3676144A (en) | 1972-07-11 |
| BE751134A (en) | 1970-11-30 |
| DE1928356A1 (en) | 1970-12-10 |
| FR2049930A5 (en) | 1971-03-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |