http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112047814-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-14 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-76 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C35-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-76 |
| filingDate | 2020-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2023-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2023-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112047814-B |
| titleOfInvention | A kind of preparation method of high-purity menthol |
| abstract | The invention discloses a method for preparing high-purity menthol, which relates to the field of menthol preparation and comprises the following preparation steps: 1) leaving mint crude oil to stand to remove bottom moisture and impurities; 2) mixing mint crude oil with ice oil for one freeze-out 1. After draining the oil, the first naphtha and the second part oil are obtained, and then the first naphtha is melted, dehydrated, and filtered to obtain the first naphtha; (3) The second part oil is mixed with ice oil for secondary freezing, and after the oil is drained, the second part of the naphtha is obtained and hair oil; melting, dehydrating, and filtering the two brains to obtain the two brain oils; 4) mixing the first brain oil and the two brain oils, and adding dried brain oil and melted oil for cooling and crystallization, and obtaining wet brains after separation and ice oil; 5) after drying the brain, cut off the head and feet of the brain to dry the brain, and prepare high-purity menthol after completion; the present invention has prepared high-purity menthol through repeated freeze-out and filtration. It not only improves its natural characteristics, but also greatly improves the product yield. |
| priorityDate | 2020-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 64.