http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-936066-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bea23fc24859bc4382f3cd71d006cd4b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-80 |
| filingDate | 1962-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1963-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-936066-A |
| titleOfInvention | Recovery process |
| abstract | Methyl esters of diphenylcarboxylic acids are recovered from a distillation residue obtained in the preparation of dimethyl tereand/or iso-phthalates according to Specification 729,989 or 809,730, by a process in which said residue is further esterified with methanol, dimethyl tere- and/or iso-phthalates are separated off, followed by digestion with a hot organic solvent such as methanol or xylene so as to yield soluble and insoluble p components at least one of which is subsequently purified, e.g. by distillation under reduced pressure or by recrystallisation from suitable solvents. When the digestion is effected with methanol, the methanol-insoluble component may be recrystallised from benzene, xylene, toluene or chloroform. Specified compounds which may be obtained by the process of the invention are trimethyl 2,41,5-diphenyltricarboxylate, dimethyl 4,41-diphenyldicarboxylate and dimethyl 3,4-benzocoumarindicarboxylate. |
| priorityDate | 1961-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.