http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-820738-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9799ffcda2dbb45041a5ab0fd08dd5fe |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B29-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C11-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-831 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B29-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C11-10 |
| filingDate | 1956-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1959-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-820738-A |
| titleOfInvention | Photographic elements containing light-screening substances |
| abstract | Azo dyes of the general formula <FORM:0820738/IV(c)/1> (and tautomeric forms thereof), wherein R is an aryl or substituted aryl group, are prepared by intermixing the diazonium salt of an amine R-NH2 with b -methylglutaconic anhydride. R may be phenyl, naphthyl or phenyl substituted by one or two groups selected from sulpho, carboxy, halogen, nitro, cyano, sulphonamido, hydroxyl, alkoxy, aryloxy, aryl, alkyl, alkyl-sulphonyl, arylsulphonyl, carbalkoxy, carbamido or a guanidine salt of a sulpho group. Examples are given of the reaction of the diazonium salt of sulphanilic acid, 5-amino-isophthalic acid or 2-amino-5-toluenesulphonic acid with b -methylglutaconic anhydride. Specifications 503,752, [Group XX], and 663,005 are referred to. |
| priorityDate | 1955-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.