http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-772198-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_73ee0bacab5a7576a6a3244747f6ea99 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24ac8e6a1509ef7b35eabf2a35187c09 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e99812fba947d6d7fde5d90340dc1284 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_93357537869ec0fd69b3193236d5acb0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-0253 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-025 |
| filingDate | 1955-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1957-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-772198-A |
| titleOfInvention | Copying process |
| abstract | 772,198. Copying-processes. I'ANSON, E., SIMMS, E., WILKINSON, D. G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 28, 1955 [Jan. 7, 1955], No. 526/55. Class 100(2) A copying process comprises bringing into contact under pressure a copy sheet moistened with a duplicating fluid and a master sheet bearing an imprint of a wax composition which forms 'in reverse script the matter to be reproduced, either the copy sheet or the wax composition containing a metal compound and the other containing a substance capable of reacting with the metal compound to form a coloured or black metal co-ordination compound. The wax composition may be a mixture of Carnauba wax and mineral oil. The duplicating fluid may be aqueous ethanol, alone or mixed with xylene, chloroform, methanol, glycol, glycerol, acetone, or diethylphthalate. The metal compound may be furic chloride, nickel chloride, cupric chloride, aluminium nitrate or cobalt chloride dissolved in the duplicating fluid, or copper benzoate, aluminium benzoate, aluminium adipate or aluminium phthalate added in dispersed form to the paper pulp. Citric acid may be mixed with furic chloride to reduce staining. The substance reacting with the metal compound may be colourless or faintly coloured, e.g. dithio - oxamide, 8 - hydroxyquinoline, 5 - hydroxymethyl - 8 - hydroxypuinoline, 6 : 8 - dihydroxyquinoline, or symmetrical diphenylcarbazide. or may be a coloured dye giving a more intense or different coloured metal compound such as the dyes of Examples 1 and 4 of Specification 15204/07 [Class 2(iii)]. There may also be used N - phenyl-dithio-oxamide, N - p - anioyl - dithio-oxamide, or the dye of Example 1 of Specification 472,757 [Group IV], or 50 parts of the triphenylmethane dyestuff obtained by the action of formaldehyde and sodium nitrate on a solution of o - cresotinic acid in concentrated sulphuric acid. |
| priorityDate | 1955-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 67.