http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4324740-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b502fde933db1d6126d10bbcbddb83ea |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-3826 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-38 |
| filingDate | 1981-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1982-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_06eb2114f0802f1a4c2faa4338ffde58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9b99c5465001ac5b4cf85d738f19da75 |
| publicationDate | 1982-04-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4324740-A |
| titleOfInvention | Preparation of 2-phenylethylene phosphonic acid |
| abstract | This invention is directed to an improved process for preparing 2-phenylethylene phosphonic acid by reacting styrene and PCl 5 in an inert organic solvent and hydrolyzing the reaction product formed, wherein the improvement comprises forming a mixture of styrene and PCl 5 in a molar ratio of about 1:1 at a temperature of from 60° to 70° C. in an inert organic solvent having a boiling point above 70° C.; maintaining the mixture at a temperature of from 60° to 70° C. with evolution of HCl gas until a clear solution forms; distilling off the solvent under vacuum; hydrolyzing the remaining reaction mixture in water at temperatures not exceeding 70° C. and cooling the hydrolyzed mixture to cause crystals of 2-phenylethylene phosphonic acid to precipitate; and recovering said crystals. |
| priorityDate | 1980-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.