http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0015831-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-14875 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C7-005 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C15-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-35 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C7-148 |
| filingDate | 1980-02-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1981-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1981-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0015831-B1 |
| titleOfInvention | Process for the preparation of at least partially sulfonated naphthalene, and use of this product in the purification of naphthalene |
| abstract | 1. Process for the preparation of at least partially sulphonated naphthalene by the reaction of sulphuric acid with naphthalene, in the presence of a solvent forming an azeotrope with water, characterised in that the molar ratio sulphuric acid/naphthalene is less than 1 and in that the reaction of the sulphuric acid on the naphthalene is carried out between 90 and 150 degrees C thus totally eliminating water in a continuous manner from the reaction medium by azeotropic distillation by means of a solvent chosen from saturated aliphatic hydrocarbons, saturated cycloaliphatic hydrocarbons or their mixtures so that the product obtained is completely free from water and sulphuric acid. |
| priorityDate | 1979-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.