http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19654485-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/C07C319-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A23K20-105 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C319-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A23K20-105 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-52 |
| filingDate | 1996-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5293392c264b1a058e38dd04244a5a9a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_15a0596fbfd111bfd65cd7793104c937 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_988f422fb2f623a6da62047fe31d5d82 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_98697331dab5e75651d1afd632debd94 |
| publicationDate | 1998-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-19654485-A1 |
| titleOfInvention | Process for the production of stable 2-hydroxy-4-methylthiobutyric acid (MHA) |
| abstract | Preparation of storage stable 2-hydroxy-4-methylthio-butyric acid (MHA) comprises distillation of a product containing >95 wt.% of a mixture of monomeric and oligomeric components of MHA. Distillation is under reduced pressure and over a time span short enough to avoid formation of by-products. Also claimed is a process for preparing MHA by isolation from a reaction mixture produced as follows; reaction of HCN and methylmercaptopropionaldehyde (MMP); hydrolysis of the obtained cyanohydrin (MMP-CH) with mineral acid; extraction with organic solvent in a liquid-liquid extraction system; evaporation of solvent from the extract; distillation to give a distillate which is chiefly MHA monomers and a bottom product of MHA dimers and oligomers; and regenerating MHA monomers by adding the bottom product to the hydrolysis of MMP-CH and/or MHA amide. Also claimed is the MHA obtained by these processes, containing >95% MHA (calculated as the sum of the monomer, dimer and oligomers), a kinematic viscosity of > 100 mm<2>/s at 25 deg C and a content of <10 mole % monomeric MHA (sic). |
| priorityDate | 1996-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.