http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-586730-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bdf637c2c76326df08a9b34055c9e2ad http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5d9f3ca41550d315642580237250c5b0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_962060f2ca65a3be43f745ebe96bfc68 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C5-38 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C5-38 |
| filingDate | 1944-06-09^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1947-03-28^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-586730-A |
| titleOfInvention | Improvements relating to photographic solutions and processes |
| abstract | 586,730. Photographic fixing solutions. KODAK, Ltd. (Eastman Kodak Co., Crabtree, J. L, and Eaton, G. T.). June 9, 1944, No. 11098. [Class 98 (ii)] Material having a layer of a silver salt emulsion having a binder having a permeability to aqueous fixing solutions less than that of gelatine, is fixed with an aqueous solution containing an iodide of an alkali metal or ammonium iodide, and thiourea or a thiocyanate or both. The silver salt emulsion may be a bromide, chloride, bromiodide, chlorobromide, or chlorobromiodide emulsion having as binder cellulose nitrate, acetate, or acetate-butyrate; or a polyvinyl resin such as acetals (e.g. acetaldehyde, propionaldehyde, or butyraldehyde acetals), polyvinyl alcohol, esters (e.g. partially hydrolysed acetates), or mixed acetal-esters. The thiocyanate may be sodium, potassium, ammonium, or tetramethylammonium thiocyanate or thiocyanocatechol. The fixing bath may contain between 8 to 25 per cent of iodide and between 0.25 to 8 per cent of thiourea or about 25 per cent of iodide and between about 5 to 25 per cent of thiocyanate dissolved in water. A thiocyanate may be incorporated in the developing bath. Specifications 527,283, 531,579, 543,855, 551,659 and 565,135 are referred to. |
| priorityDate | 1944-06-09^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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