http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6964728-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4168d64603f3b79138c0963ffdccd1bc http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d097fa85ab6d9405b7eddcf59f04176d http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2b2cd4a32420bb682f054dd8c957f5ae http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1a512ce621c7f43e0475f7ac2ceb2bcc |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S203-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S203-11 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D3-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-34 |
| filingDate | 2002-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2005-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_49ea5a6f6a31a255095e34ec3ef7be63 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8419105c53398e32f4f28fad305c69c9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_66e39a2738433afe00c976530ed2c085 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3844f8da5546b7a0ad3b714a2cffa93f |
| publicationDate | 2005-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6964728-B2 |
| titleOfInvention | Separation process |
| abstract | Bisphenol-A-bis(neopentylglycolphosphate) products of enhanced properties and processes for preparing them are described. One of the processes includes (a) mixing and reacting neopentyl glycol and bisphenol-A-bis(dichlorophosphate) in an inert polar organic solvent which (1) if mixed by itself with an equal volume of water at 25° C., will form a separate phase, (2) the solvent by itself will dissolve at least about 10 wt % of bisphenol-A-bis(neopentylglycolphosphate) at a temperature in the range of 25 to 50° C., and optionally but preferably (3) the solvent by itself can be completely vaporized at a temperature below about 180° C.; (b) washing bisphenol-A-bis(neopentylglycolphosphate) product formed in a) while dissolved in inert organic solvent having such characteristics at least once with an aqueous alkaline washing solution; and (c) optionally but preferably, recovering bisphenol-A-bis(neopentylglycolphosphate) product from organic solvent having such characteristics. The reaction of (a) can be conducted in an inert non-polar solvent if that solvent is replaced by an inert polar organic solvent satisfying (1) and (2), and preferably (3). A solvent satisfying (1), (2), and (3) is used when (c) is conducted by distilling or vaporizing off the solvent to recover the bisphenol-A-bis(neopentylglycolphosphate) product as such. The product has a low acid number or a high thermal stability, and usually both. |
| priorityDate | 2002-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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