http://rdf.ncbi.nlm.nih.gov/pubchem/patent/PL-197291-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f37b0b52fb4b5bf13a038e922eb0e52f |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-80 |
| filingDate | 1998-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f5802a3b128a3f87cf5d50bf64df76d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ebfda71cef20c47088f7ceb1be48746f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8eb16b2b83e9172fe717948a6cd1bdcc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7927efb4e083d988b96e914c5dd7ce11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2636c5fa1aef7cc3f06ca5d7f2b5051e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_96a7c5b879e7b836ebe4b9bdec0a029c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_09811cb396c9f00ba4e230de3f94e0db |
| publicationDate | 2008-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | PL-197291-B1 |
| titleOfInvention | Method for obtaining dimethyl isophthalate and dimethyl terephthalate from the waste fraction from the dimethyl terephthalate production process |
| abstract | The method of obtaining dimethyl isophthalate and dimethyl terephthalate from the waste fraction from the processnfor the production of dimethyl terephthalate, characterized in that the waste fraction from the production of dimethyl terephthalatencontaining dimethyl terephthalate and dimethyl isophthalate is mixed while hot with the aqueous solutionnsodium metabisulphite with a concentration depending on the content of methyl p-formylbenzoate in the wastenfraction so that the stoichiometric ratio of methyl p-formylbenzoate to sodium metabisulfitenwere greater than 1: 2, it is cooled and centrifuged, then the waste fraction is crystallized from the solutionndimethyl isophthalate in methanol, saturated at the final crystallization temperature wherenthe crystallization is carried out such that the temperature of the crystallized solution is lowered by 5-10 ° C belownthe final crystallization temperature, then the solution is heated to the final crystallization temperature,nand the precipitate containing dimethyl terephthalate and dimethyl isophthalate is centrifuged. |
| priorityDate | 1998-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.