http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-8200289-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-773 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-83 |
| filingDate | 1981-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d54d7898316c67fbfc114464ed77f536 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5619d825c1213e6879f5b47c6058c8a3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ebc8922ae0c3e25351635bc440b16258 |
| publicationDate | 1982-02-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-8200289-A1 |
| titleOfInvention | Process for the preparation of diaryl esters |
| abstract | Diaryl esters of aromatic dicarboxylic acids are prepared by directly reacting aromatic dicarboxylic acids with a large molar excess of an aromatic monohydroxy compound, between about 15 and 17 moles of the aromatic monohydroxy compound which is used as a solvent, a reagent and a vehicle for removing the water formed during the reaction, the latter being carried out by heating the reactants at an elevated temperature in the presence of stannous oxide (SnO) as a catalyst at approximately 275 C-300 C and by extracting the water formed during the reaction and a large proportion of the monohydroxy aromatic compound of the reaction mixture. The process is especially applicable to the preparation of diaryl esters of isophthalic and terephthalic acid, for example diphenyl isophthalate and diphenyl terephthalate by reacting the acids with an aromatic monohydroxy compound, for example phenol, giving yields of 90-95% diesters plus 5-10% yield of the corresponding monoaryl ester, or half ester. This mixture can also then be reacted with a diaryl carbonate, for example diphenyl carbonate, to convert the half ester into a diester to give a total diester yield of about 99.9%. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9056964-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8692013-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8344172-B2 |
| priorityDate | 1980-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.