http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20060126403-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_574bc8fd24e08fc5a292d012c5a28e48 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C39-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-20 |
| filingDate | 2006-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_818966f490b9710d908d518e0eaec80f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a0c4d8fc6b8122be23e53f66121d1fa6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8999bb583e85b4b9930b5f8527a185fa http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_199a25b2f3c1aac15282aeb65c9ab2ef http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e71c898cc71390f901eb69148968e197 |
| publicationDate | 2006-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20060126403-A |
| titleOfInvention | Manufacturing method of high purity bisphenol A |
| abstract | The present invention discloses a process for the preparation of high purity bisphenol A. This multi-step process comprises the steps of a) reacting phenol and acetone in the presence of an acidic ion exchanger and a sulfur-containing promoter to produce a product mixture comprising bisphenol A and phenol; b) continuously obtaining crystals of the bisphenol A-phenol adduct from the product mixture by suspension crystallization; c) separating the adduct obtained in step (b) by solid-liquid separation to obtain a solid phase and a liquid phase; d) washing the solid phase with a phenol containing solution to obtain a washed solid phase and a second liquid phase; e) distilling the liquid phase and the second liquid phase to obtain a dehydration solution containing 5-15 wt% of p, p-BPA, 3-12 wt% of isomers of BPA and less than 0.3 wt% of water; f) introducing at least 90% by weight of a dehydration solution into step (a); g) adding phenol to the washed solid phase obtained in step d) to obtain a homogeneous system containing p, p'-BPA, an isomer of BPA and water; h) continuously obtaining a crystal of a bisphenol A-phenol adduct from the homogeneous material system by suspension crystallization; i) separating the crystals obtained in step (h) by solid-liquid separation to obtain a second solid phase; j) washing the second solid phase with a phenol containing solution to obtain the washed adduct; And k) heating the washed adduct to remove phenol. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10442746-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20170058873-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10683251-B2 |
| priorityDate | 2005-06-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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