http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2022177497-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be3acad38cecd96abccaf26f069598c6 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-095 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-09 |
| filingDate | 2021-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1bc007499efadf7903538b3e20f2676a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_419332e7024fd1112d0f073b99b20bf4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f75ac56387e391e4124a2429197f30b7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f44ed659a59dfb1d9382a568887a6a9b |
| publicationDate | 2022-06-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2022177497-A1 |
| titleOfInvention | Continuous industrial production method of high-purity bisphenol a-bis(diphenyl phosphate) |
| abstract | Disclosed is a continuous industrial production method of high-purity bisphenol A-bis(diphenyl phosphate). The method includes: dividing bisphenol A into two parts, mixing a part of the bisphenol A with phosphorus oxychloride and a Lewis acid catalyst, adding the mixture into a continuous multistage crosslinked reactor, removing excessive phosphorus oxychloride through distillation, adding an organic base acid binding agent and the rest of the bisphenol A to react for 1.5 to 3 h at a temperature of 115° C. to 120° C. to obtain an intermediate product reaction liquid, mixing the intermediate product reaction liquid with phenol, adding the mixture into a multistage esterification reactor for esterification reaction, continuously supplying the consumed phenol in the esterification process, obtaining a crude product after the reaction is completed, sequentially performing continuous acid washing, continuous alkali washing and continuous water washing, and performing continuous solvent recovery and filtration to obtain a bisphenol A-bis(diphenyl phosphate) finished product. |
| priorityDate | 2020-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 63.