| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6842ac50cf3ca2352074cb3a75079618 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C321-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-53
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C235-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C321-30 |
| filingDate |
2002-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2009-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_904172a72d82afa414e666d1293c7381
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_846f27e989fec011b630067b90713939
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8811380dfbe2866fcd172a0a8545faab
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_48e4eb061742ffd840bb3db1f75baa10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_504b9fd1c381932532b2de52c6666801
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8002841ea7320fc4f4579270c36cad45 |
| publicationDate |
2009-08-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1414780-B1 |
| titleOfInvention |
Interfacial method of preparing ester-substituted diaryl carbonates |
| abstract |
High yields of ester-substituted diary carbonates such as bis-methyl salicyl carbonate were obtained by the condensation of methyl salicylate with phosgene in the presence of a phase transfer catalyst (PTC) in an interfacial reaction system in which the pH of the aqueous phase was greater than 9.3. Using the method of the present invention conversions of greater than 99% were obtained whereas under standard conditions using triethylamine as the catalyst conversions were limited to 70-75% of the methyl salicylate starting material even with a 20 mole% excess of added phosgene. The optimized conditions of the present invention use only a slight excess of phosgene and represent an attractive route for the manufacture of bis methyl salicyl carbonate and ester-substituted diaryl carbonates generally. |
| priorityDate |
2001-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |