http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2002087021-A1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C68-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C68-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-96 |
| filingDate | 2001-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b97eb28ff11156afabb62a01c5606cf4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a29c1a6ae85879bfa7c11f753a5a80b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_588d7b2f46c5560b1960909dadc26c95 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c608979212e5507bff4c7c25718bf618 |
| publicationDate | 2002-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2002087021-A1 |
| titleOfInvention | Continuous process for the production of carboxylic acid diaryl esters |
| abstract | An improvement to the interfacial boundary process for continuous production of carbonic acid diaryl esters is disclosed. The process that entails a reaction of monophenols in an inert solvent, in the presence of an alkaline solution and a nitrogen base catalyst, is carried out in two stages. In the first stage phosgene, inert solvent and phenol in solution are combined to form a material system and a second stage the reaction to form carbonic acid diaryl ester is completed. The improvement comprising maintaining in the first stage a pH of 11.0 to 12.0 and a temperature below 40° C. and a pH of 7.5-10.5 and a temperature below <50° C. in the second stage. |
| priorityDate | 2000-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 78.