http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-487697-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2baf849d216e689ecc40ccc931a7a7bc |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-01 |
| filingDate | 1997-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2002-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_29bec0086143f4d6e3305e8f90b393c7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ae668b8f9a218acaff2c86ce5a5bb0e5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba335db5d1ab8e82ec1ae59bbce8d285 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a9958a79a167715005ef0db2d94a5e94 |
| publicationDate | 2002-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-487697-B |
| titleOfInvention | Method for producing purified epoxy compound |
| abstract | A 2,3-epoxypropyl derivative or a 2-methyl-2,3-epoxypropyl derivative of a compound having carboxyl groups or amido groups is produced as a purified product having an epoxide equivalent of 1.0 to 1.1 times the theoretical epoxide equivalent of the derivative, an ionic halogen content of 10 ppm or less, transparency when molten and a stability against increase in the epoxide equivalent when stored at 150 DEG C for 24 hours, by a process comprising steps (A) reacting 1.2 to 60 mol of an epihalohydrin or a 2-methyl-epihalohydrin with 1 mol of active hydrogen atoms of the carboxyl or amido group of the compound in the presence of a catalytic amount of a tertiary amine, a quaternary ammonium base or salt, a tri-substituted phosphine or quaternary phosphonium salt, thereby forming a reaction product containing a 2-hydroxy-3-halopropyl derivative or a 2-hydroxy-2-methyl-3-halopropyl derivative, (B) dehydrohalogenating the derivative by adding to the reaction product a sufficient amount of an alkali metal hydroxide while agitating the resulting slurry containing a precipitated alkali metal halide, thereby forming a final slurry containing the 2,3-epoxypropyl derivative or the 2-methyl-2,3-epoxypropyl derivative and the alkali metal halide, (C) washing the final slurry or a liquid product formed by removing the alkali metal halide from the final slurry with an aqueous solution of, as refining agent, a sulfonic acid, a salt of a sulfonic acid, a salt of a carboxylic acid having at least 7 carbon atoms, a salt of a sulfate of an alcohol having at least 4 carbon atoms or a mixture thereof respectively having a solubility of at most 1 wt% in water at 30 DEG C containing the refining agent in an amount effective to refine the slurry or the liquid product, thereby forming a refined liquid containing the derivative, and (D) removing by evaporation the epihalohydrin or the 2-methyl-epihalohidrin from the refined liquid, thereby forming the 2,3-epoxypropyl derivative or the 2-methyl-2,3-epoxypropyl derivative as the purified product. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-I460167-B |
| priorityDate | 1996-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 213.