http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102399176-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1db82c6bb3381bbca94284cfd9b8fe91 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d6a6f422b091ba12ea61d4adbf1b0e8e |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-20 |
| filingDate | 2011-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d67387c6b55520f05baa536e3d06cc84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b1bc089bf5666f8a65b0be83f9721e85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fc7f84ae2b75cafbf1db4e4143435a1d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7653dfe066d7584927f2307c33a51876 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e3d493ea7544a3bc55b53a6801ee1050 |
| publicationDate | 2013-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102399176-B |
| titleOfInvention | Preparation method of high-content 2-hydroxy-4-(methylthio) butyl calcium |
| abstract | The invention relates to a preparation method of high-content 2-hydroxy-4-(methylthio) butyl calcium. The content of 2-hydroxy-4-(methylthio) butyl calcium prepared by the traditional synthesis method is lower. The preparation method provided by the invention comprises the following steps of: adding 2-hydroxy-4-methionine nitrile with content higher than 99.0% used as a raw material in concentrated HCl (hydrochloric acid) for carrying out hydrolysis reaction; after the reaction is finished, regulating pH with alkali till pH is between 7.8-8.0, cooling, crystallizing and filtering to obtain a 2-hydroxy-4-(methylthio) butyric amide crude product; recrystallizing with water to obtain high-content 2-hydroxy-4-(methylthio) butyric amide; and dissolving the high-content 2-hydroxy-4-(methylthio) butyric amide in water, adding excess Ca(OH)2 and directly hydrolyzing at 80-100 DEG C to generate 2-hydroxy-4-(methylthio) butyl calcium. The yield of the preparation method is very high, and the content of the prepared 2-hydroxy-4-(methylthio) butyl calcium is higher than 99.0%. |
| priorityDate | 2011-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.