GB1337607A - - Google Patents
Info
- Publication number
- GB1337607A GB1337607A GB1070071*[A GB1070071A GB1337607A GB 1337607 A GB1337607 A GB 1337607A GB 1070071 A GB1070071 A GB 1070071A GB 1337607 A GB1337607 A GB 1337607A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reactants
- april
- maintained
- precipitation
- added
- 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
- G03C1/015—Apparatus or processes for the preparation of emulsions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G5/00—Compounds of silver
-
- 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
- G03C1/035—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein characterised by the crystal form or composition, e.g. mixed grain
- G03C2001/0357—Monodisperse emulsion
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Colloid Chemistry (AREA)
Abstract
1337607 Silver halide emulsions EASTMAN KODAK CO 22 April 1971 [23 April 1970] 10700/71 Heading G2C An emulsion containing silver halide grains of up to 2 microns is produced by simultaneously adding aqueous silver salt and halide solutions to a stirred aqueous solution containing peptizer and ripening agent, the additions being carried out in two stages, less than 40 per cent, preferably less than 20 per cent, of the reactants being added while the precipitation medium is maintained at a temperature of at least 55‹C., preferably at least 70‹C., and the rest of the reactants being added while the precipitation medium is maintained at a lower temperature, preferably at least 20‹C. lower. Other metal ions may be occluded at any convenient stage of precipitation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3135170A | 1970-04-23 | 1970-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1337607A true GB1337607A (en) | 1973-11-14 |
Family
ID=21858956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1070071*[A Expired GB1337607A (en) | 1970-04-23 | 1971-04-22 |
Country Status (7)
| Country | Link |
|---|---|
| BE (1) | BE766236A (en) |
| BR (1) | BR7102402D0 (en) |
| CA (1) | CA951086A (en) |
| CH (1) | CH531467A (en) |
| DE (1) | DE2112765A1 (en) |
| FR (1) | FR2086269B1 (en) |
| GB (1) | GB1337607A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1596602A (en) * | 1978-02-16 | 1981-08-26 | Ciba Geigy Ag | Preparation of silver halide emulsions |
| CN114797157B (en) * | 2022-05-18 | 2024-05-17 | 浙江海钛新材料科技股份有限公司 | Method and device for purifying silver nitrate by layered integral crystallization |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE636801A (en) * | 1962-09-01 |
-
1971
- 1971-03-10 CA CA107,349,A patent/CA951086A/en not_active Expired
- 1971-03-17 DE DE19712112765 patent/DE2112765A1/en active Pending
- 1971-04-08 CH CH512571A patent/CH531467A/en not_active IP Right Cessation
- 1971-04-19 FR FR7113674A patent/FR2086269B1/fr not_active Expired
- 1971-04-22 GB GB1070071*[A patent/GB1337607A/en not_active Expired
- 1971-04-22 BR BR2402/71A patent/BR7102402D0/en unknown
- 1971-04-23 BE BE766236A patent/BE766236A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2086269B1 (en) | 1974-04-26 |
| BR7102402D0 (en) | 1973-06-07 |
| CA951086A (en) | 1974-07-16 |
| CH531467A (en) | 1972-12-15 |
| DE2112765A1 (en) | 1971-11-04 |
| BE766236A (en) | 1971-10-25 |
| FR2086269A1 (en) | 1971-12-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |