http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H10152552-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d9cb217f83556ce2a418344c2d485415 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G64-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-96 |
| filingDate | 1997-09-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ced89da836b5b0521e7a017597861b27 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_24384b9c845354358c63896b9dd3643f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97123d7864171706b30f1d8aaf0a3002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1c5cc26737f311caf5998fe2f24e9f67 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6277bd5958eaea924dd28fc5ec5f8b55 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fdf3e87f33c3b65d8df37ddd49f87eaa |
| publicationDate | 1998-06-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H10152552-A |
| titleOfInvention | Polycarbonate manufacturing method |
| abstract | (57) [Summary] In the present invention, a dialkyl oxalate is reacted with a phenol compound in a first step to produce a diaryl oxalate, and then, in a second step, the diaryl oxalate is subjected to a deCO reaction to remove the CO. Generating a diaryl carbonate and a by-product carbon monoxide, and subjecting the diaryl carbonate and a polyvalent hydroxy compound to a polycondensation reaction in a third step to produce a polycarbonate and a by-product phenol compound, thereby separating the phenol compound. Collect, The present invention relates to a method for producing a polycarbonate, which is reused in the reaction of the first step. According to the present invention, it is possible to produce a diaryl oxalate from a dialkyl oxalate, produce a diaryl carbonate by subjecting the diaryl oxalate to a CO removal reaction, and industrially produce a polycarbonate using the obtained diaryl carbonate. This is a new method for producing polycarbonate. |
| priorityDate | 1996-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 257.