| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c7ad58d3c0b071069a8ee0cb8c8ba2e8 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-96 |
| filingDate |
1999-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2002-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aab7ac52281f50119d0d6e674fe7af0c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d79b39a23cc0d23b31eb86cd0df789e0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c02f48c3d469e2718fa59a622f2c036d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a339fab29532a52ee477d336e66a0f77
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ce024b45a93436b6e71ae036a4dabda
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1ae9dadb0520bead0cafb32f1d153b7a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_53393624ba4e170afcb0b3b106c3e102 |
| publicationDate |
2002-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6437166-B1 |
| titleOfInvention |
Method for reprocessing reaction mixtures containing diaryl carbonate |
| abstract |
A process for the work up of reaction mixtures containing diaryl carbonate, aromatic hydroxy compound, water, base and quaternary salt, which are obtained in the preparation of diaryl carbonates by direct carbonylation of aromatic hydroxy compounds, is described. In the process of the present invention an adduct of diaryl carbonate and aromatic hydroxy compound is crystallized from the reaction mixture. A distillate comprising aromatic hydroxy compound is removed from the liquid phase either prior to or after crystallization of the adduct of diaryl carbonate and aromatic hydroxy compound. The liquid phase remaining after the crystallization and distillation steps may be recycled, without further work up, back to the direct carbonylation process step by which the diaryl carbonate is initially prepared. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6605191-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6512134-B2 |
| priorityDate |
1998-12-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |