http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113548953-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_509dcdee307c173971b32910685d906e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-78 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-02 |
| filingDate | 2020-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_45b9e8abc2f500c65f292bd023883d80 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3ff8fe86566b9f4658a7090fbe51a98f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_83a56a9ea330544ea5ca2b0a041a6e73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ca5525b4285b834e6f689a3ec750502 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df9847013bcbac5b9ae2dec046b2b71f |
| publicationDate | 2021-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113548953-A |
| titleOfInvention | Propionaldehyde purification method |
| abstract | The invention discloses a propionaldehyde purification method, which comprises the following steps: adding a certain amount of polymerization inhibitor into low-content propionaldehyde, stirring, heating and distilling, controlling the external temperature and the top temperature at normal pressure, collecting obtained distillate, and discarding a small amount of distillate; adding strong base and weak acid salt into the collected distillate, and stirring at normal temperature; filtering, collecting filtrate, and storing under nitrogen gas seal. The method has simple process and easy operation, and is suitable for preparing high-content propionaldehyde with the content of more than 99.8 percent. The invention can eliminate the influence of polymer and acidic substance after adding polymerization inhibitor or strong base weak acid salt, and the operable range of external temperature is large, the quality of propionaldehyde is not influenced; in the later stage of distillation or rectification, the top temperature is increased, and the content of propionaldehyde in the distillate is greatly reduced when the temperature exceeds the set temperature of the invention, so that the distillate is collected in the top temperature range of the invention to obtain high-content propionaldehyde. |
| priorityDate | 2020-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.