http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2522175-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-15 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-15 |
| filingDate | 1975-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73459d445ba497eb62e4e68aa543d896 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b94b2f87b882617d22b64a4e9b2ae6f1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce5665ebf5ba2f68e705a7fe731cc8e9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f55b7270026799e6b2b60949d2e55d5c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a9e61cb3263454af14fa16ee80ef61dd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_770800923bbba6b5103e5cc584c953b7 |
| publicationDate | 1976-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2522175-A1 |
| titleOfInvention | PROCESS FOR THE PREPARATION OF 2-HYDROXYNAPHTHALIN-3-CARBONIC ACID |
| abstract | 2-Hydroxy-3-naphthoic acid (I) is prepared by reacting carbon dioxide on alkali metal salts of beta-naphthol in the presence of beta-naphthol at high temp. and pressure and the reaction is carried out being subjected to a continuous shearing action in time and space. (I) is an intermediate partic. used in the production of dyes. Previous dry processes have been slow (30-35 hrs) with difficult heat transfer and resinous by-products are formed. The above process reduces the amount of resins formed giving yields of 50-60% based on the alkali metal naphthalate used, also the reaction time is shorter and lower pressures may be used. |
| priorityDate | 1975-05-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.