http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-513560-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_603794ba68ca3131bfde3c9f54ac6e57 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bdf6663655e2fe4d2d1bff3e35a95332 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8c5fd89933dd086ff76efe677fe00d14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ea12ff7733b44dd4c2f4899af26cf39e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-58 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-58 |
| filingDate | 1938-04-05^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1939-10-16^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-513560-A |
| titleOfInvention | Improvements in photographic contact printing by reflected light |
| abstract | 513,560. Reflex copying processes. KALLE & CO. AKT.-GES., POSER, G. VON, SCHERER, T.. and SUS, O. April 5, 1938, No. 30429. Divided out of and addition to 503,996, under which a Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 6, 1938. [Class 98 (ii)] In the reflex copying process of the parent Specification, secondary or tertiary p-aminodiazo compounds are used in conjunction with alkyl phenols containing one or more alkyl groups in the benzene ring and in which a substituent known to increase the water solubility is present in one or more of the alkyl groups. Suitable substituents are amino groups, substituted or not, carboxyl, hydroxyl, and sulpho groups. Derivatives of cresols, xylenols, and trimethyl phenols may be used. Suitable compounds are 1- oxymethyl-2-phenol, #-(2-oxyphenyl)-propionic acid, 2-(w-phenylamino)-methyl-1-phenol, 2-(wdimethylamino)-methyl-1-phenol, 2-oxymethyl-5- methyl-1-phenol, 2-(w-phenylaminomethyl)-5- methyl-1-phenol, #-(4-methyl-2-oxyphenyl)- glutaric acid, 2:5-dimethyl-6-oxymethyl-1-phenol 2-oxymethyl-6-methoxy-1-phenol, and 2-(wphenylaminomethyl)-6-methoxy-1-phenol. Suitable diazo compounds are 4-monoethylamino-3- methyl-1-benzene diazonium chloride, 4- dimethylaminobenzene-1-diazonium chloride, and 4-diethylaminobenzene-1-diazonium chloride. In examples (1) 4-monoethylamino-3-methylbenzene- 1-diazonium chloride, 2 :5-dimethyl-6-wdimethylamino-metheyl-1-phenol, atric acid and esculine are applied to paper, which is exposed and developed with ammonia gas; (2) 4- dimethylamino - 2 - methylbenzene - 1 - diazonium chloride, 2 :5 dimethyl-6-w-dimethylaminoethyl- 1-phenol, and tartaric acid are applied to acetyl cellulose and after exposure developed with ammonia; and (3) a cellulose hydrate sheet is sensitized with 4-(2<1> :6<1>-dichlorbenzyl)-amino-1- benzenediazonium sulphate or 4-monoethylamino- 3-methylbenzene-1-diazonium chloride and 2- (w-phenylamino - methyl) - 5 - methyl - 1 - phenol, thiourea, and tartaric or citric acid. Other azo components may be used. |
| priorityDate | 1938-04-05^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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