http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110156570-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-88 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C39-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C37-88 |
| filingDate | 2019-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110156570-B |
| titleOfInvention | Method for preventing phenol from yellowing |
| abstract | The invention relates to a method for preventing phenol from yellowing. The method for preventing phenol from yellowing comprises the following steps: heating and melting phenol to form liquid phenol, adding citric acid into the liquid phenol, and uniformly mixing to obtain a mixed solution. According to the experimental and literature data, phenol is yellowed because part of phenol exposed to the air is oxidized into p-benzoquinone by oxygen, solid p-benzoquinone is golden yellow, and the phenol is yellow or brownish yellow when the phenol is in a liquid state. |
| priorityDate | 2019-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.