http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6245951-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c72d118f5664072de841f9c5c34b9d99 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C39-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-20 |
| filingDate | 1999-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2001-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_35f570bf25852ad201dc5d1e1eda19ea http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ab422b9f03f5945289b953e1c52d50f0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_28eddfe3caf9bc6a16e19c9e4ff29642 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f1a98a8ba1b58ef3115efbbed0d76cea http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_56be9961fea009b002356a56647a321b |
| publicationDate | 2001-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6245951-B1 |
| titleOfInvention | Process for cleaning bisphenol pre-reactor |
| abstract | In a semicontinuous method for manufacturing bisphenols, reduced fouling in the pre-reactor is achieved by using two or more prereactors are used to continuously condense the dihydric phenol and the ketone or aldehyde to produce a partial reaction product in which the reaction of the dihydric phenol and the ketone or aldehyde is 10 to 70% complete. This partial reaction product is continuously removed from the pre-reactors, combined and introduced to a batchwise completion reactor. A stream of water or aqueous hydrochloric acid is added in alternating intervals to the pre-reactors, such that one is being cleaned by shifting the solubility of the bisphenol product at the same time that the other(s) continue to product a normal product stream which includes seed crystals for enhancing the performance of the batchwise completion reactor. |
| priorityDate | 1999-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.