http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-0167723-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_aea5ddac9cae108a5f80101c3f50a351 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C59-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-42 |
| filingDate | 1996-04-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1999-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94713e9879582728de784c58f3c3e660 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a4a9fcab0c839afc7c9c082d752b3204 |
| publicationDate | 1999-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-0167723-B1 |
| titleOfInvention | Method for Purifying Beta-hydroxy Isobutyric Acid |
| abstract | The present invention relates to a novel purification method of β-hydroxyisobutyric acid, which comprises: (a) extracting an aqueous solution containing β-hydroxyisobutyric acid with an organic solvent at a pH of 1.5 to 3.5 to separate an organic solvent layer. ; (b) neutralizing the separated organic solvent layer with an alkaline solution to separate the aqueous layer; (c) washing the separated aqueous layer with an organic solvent at pH 1.0-7.0; (d) extracting the washed aqueous layer with an organic solvent at pH 1.5-3.5, separating the organic solvent layer, and then concentrating to obtain a concentrate of β-hydroxyisobutyric acid; (e) comprising the step of neutralizing the obtained β-hydroxyisobutyric acid concentrate in an organic solvent or in an organic solvent in which a small amount of water is mixed with an inorganic base to prepare a metal crystal salt of β-hydroxyisobutyric acid It relates to a method for purifying β-hydroxyisobutyric acid.n n n According to the present invention, it is possible to purify high-purity β-hydroxyisobutyric acid in the form of a metal salt by a relatively simple process, and the purified β-hydroxyisobutyric acid is protected from acidic sites in the form of a metal salt, so that the preservability It is improved and can be converted to β-hydroxyisobutyric acid as it is or as a simple acid treatment and used as a synthetic raw material. |
| priorityDate | 1996-04-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.