GB689930A - Synthetic polypeptides of amino acids as photographic restrainers - Google Patents
Synthetic polypeptides of amino acids as photographic restrainersInfo
- Publication number
- GB689930A GB689930A GB769/51A GB76951A GB689930A GB 689930 A GB689930 A GB 689930A GB 769/51 A GB769/51 A GB 769/51A GB 76951 A GB76951 A GB 76951A GB 689930 A GB689930 A GB 689930A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mixture
- polypeptide
- amino acids
- synthetic polypeptides
- acid
- 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
- G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G5/00—Compounds of silver
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/04—Polyamides derived from alpha-amino carboxylic acids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Peptides Or Proteins (AREA)
Abstract
Synthetic polypeptides are produced by allowing the anhydride of an N-carboxy-a -amino acid to polymerize in a water-miscible alcohol, e.g. methanol, ethanol, or propanol, containing some water to catalyse the reaction. A mixture of two or more anhydrides may be polymerized, and such mixture may be obtained by converting a mixture of two or more amino acids into the anhydrides of their N-carboxy derivatives. The polypeptide of leucine is prepared by warming together N-carbomethoxyleucine, benzene, and thionyl chloride, distilling off the excess thionyl chloride, and allowing a 1 per cent solution in 95 per cent ethanol to stand. The polypeptides of proline, arginine, histidine, glutamic acid, and e -carbobenzyloxylysine, and the copolypeptide of leucine and lysine are similarly prepared. The e -carbobenzyloxy group may be removed from the polypeptide of e -carbobenzyloxylysine by adding red phosphorus to a mixture of the polypeptide, glacial acetic acid, and hydriodic acid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US689930XA | 1950-01-11 | 1950-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB689930A true GB689930A (en) | 1953-04-08 |
Family
ID=22086012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB769/51A Expired GB689930A (en) | 1950-01-11 | 1951-01-10 | Synthetic polypeptides of amino acids as photographic restrainers |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE500537A (en) |
| GB (1) | GB689930A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1217436A2 (en) * | 2000-12-19 | 2002-06-26 | Eastman Kodak Company | Color photographic element with improved developability |
| CN103087313A (en) * | 2013-02-06 | 2013-05-08 | 三角轮胎股份有限公司 | Amino acid oligomer preparation method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB721067A (en) * | 1952-10-09 | 1954-12-29 | Ilford Ltd | Improvements in or relating to the production of silver halide photographic emulsions |
-
0
- BE BE500537D patent/BE500537A/xx unknown
-
1951
- 1951-01-10 GB GB769/51A patent/GB689930A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1217436A2 (en) * | 2000-12-19 | 2002-06-26 | Eastman Kodak Company | Color photographic element with improved developability |
| EP1217436A3 (en) * | 2000-12-19 | 2003-12-03 | Eastman Kodak Company | Color photographic element with improved developability |
| CN103087313A (en) * | 2013-02-06 | 2013-05-08 | 三角轮胎股份有限公司 | Amino acid oligomer preparation method |
| CN103087313B (en) * | 2013-02-06 | 2015-12-09 | 三角轮胎股份有限公司 | Prepare the method for oligomeric aminobenzoic acid |
Also Published As
| Publication number | Publication date |
|---|---|
| BE500537A (en) |
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