http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-344525-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C319-28 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D3-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C325-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C- |
| filingDate | 1967-08-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1968-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-344525-A1 |
| titleOfInvention | A PROCEDURE FOR PURIFYING CRUDE BETA-METHYLMERCAPTOPROPIO-NALDEHYDE. |
| abstract | Crude # - methylmercaptopropionaldehyde, containing as an impurity an organic base or salt thereof of lower b.pt. than the aldehyde, is purified by distilling out the said impurity under reduced pressure while adding continuously or intermittently an amount of water and/or an alcohol of b.pt. lower than the aldehyde to (a) the crude aldehyde (b) the distillation column or (c) the recycled condensed distillate, sufficient to reduce the concentration of the organic base in the distillate to below 25% by weight. An impurity such as piperidine, pyridine, triethylamine or pyridine-acetic acid may be removed by this means. In the example crude # - methylmercaptopropionaldehyde, obtained from acrolein and methylmercaptan with acetic acid-pyridine as catalyst, is purified. |
| priorityDate | 1966-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.