| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0e7b522b71fd001f1a633fd8563b2a3e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-416 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-353
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-41
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C63-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-232
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-15
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate |
1989-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79d1ad104d96db11fa4f09c935ab0207
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2250ec1221e5ed7259e2707c77ff3325
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3076c12452f2c78a46726c2bf7b8946
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ab8acd00778e2390cb590f8275c0d87 |
| publicationDate |
1990-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0359098-A1 |
| titleOfInvention |
Method of manufacturing alkali metal salt of 2,3,6,7-naphthalenetetracarboxylic acid |
| abstract |
A method of manufacturing an alkali metal salt of 2,3,6,7-naphthalenetetracarboxylic acid. Either a sodium salt or a mixture of sodium salt and potassium salt of at least one naphthalenecarboxylic acid selected form the group consisting of naphthoic acids and naphthalenepolycarboxylic acids is heated to an elevated temperature in an inert-gas atmosphere in the presence of a Henkel reaction catalyst and halogenated sodium. |
| priorityDate |
1988-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |