http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19548538-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d669af06cb2abbcd6823699582a97002 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C323-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C319-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C319-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-28 |
| filingDate | 1995-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_988f422fb2f623a6da62047fe31d5d82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c8dca9e670d7c675288afcabee0da603 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5293392c264b1a058e38dd04244a5a9a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32aa8aac87e8369a34a6b129cbe772d6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33a0b2a8d104e07b013475923c3e2c2b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3c1147469f55ebd1bfc5a5b735d921f |
| publicationDate | 1997-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-19548538-A1 |
| titleOfInvention | Process for the production of 2-hydroxy-4-methylthiobutyric acid (MHA) |
| abstract | In known processes: the MHA is isolated from a reaction mixture obtained by addition of hydrocyanic acid (HCN) to methylmercapto-propionaldehyde (MMP) and hydrolysis of the resulting methylmercapto-propionaldehyde cyanhydrine (MMP-CH) with sulphuric acid; the reaction mixture is brought into contact in a fluid/fluid extraction system with an organic solvent which is essentially non-miscible with water to form an extraction solution containing the solvent and MHA from the reaction mixture, and the MHA is obtained as an extract from this extraction solvent by evaporation. Such processes solve the problem of sulphate waste by coupling with a sulphuric acid recovery system. For effective operation of the latter, the salt-containing waste streams must undergo evaporation. According to the invention, the salt content of the reaction mixture before fluid/fluid extraction is adjusted to a level greater than about 50 wt % and preferably greater than 55 wt % relative to the total quantity of non-organic components in the reaction mixture. This improves the energy balance of the entire process, eliminates the need to evaporate highly corrosive solutions, increases the conversion rate in the hydrolysis stage and improves the distribution coefficients in the extraction. The acid obtained can be used as animal fee additive. |
| priorityDate | 1995-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.