| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_99a3e6cf9ae2da50e548d7039dc30f86 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-32 |
| filingDate |
1989-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ee2f6396caf1a1bd0382b592e918385a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9aedae97f023f97cd6174a377ad0c174
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c4db069ef7c6e0c8cb5e332de67446a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a6bbea1a5a75bf924f81b1b71245c8c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4f80a7713bafc4119a2a261f5f63a9cd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c9ed478c304a4a26b07122fda40c0f9f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c273a6348268c66dd5c64eb6fbde4ba4 |
| publicationDate |
1990-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DD-285095-A5 |
| titleOfInvention |
PROCESS FOR PREPARING 1-HYDROXY-NAPHTHALENE-2-CARBONSAEUREAMIDE TYPE (2) HYDROXY-ALKYLTHIO-SUBSTITUTED TWO-EQUIVALENT BLUE GREEN COUPPLERS (1) |
| abstract |
The invention relates to a process for the preparation of 4- (hydroxy-alkylthio) -substituted 1-hydroxy-naphthalene-2-carboxylic acid amide-type two-component-blue-dye couplers which can be used in the photographic industry. According to the invention, * (I) is rearranged by heating in a solvent in the presence of a base to give the naphthalene-2-carboxylic acid amides (II). The crude yields are practically quantitative. After purification by recrystallization they are between 50 and 85 * {* heating; Solvent; Base} |
| priorityDate |
1989-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |