http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111303395-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-823 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-08 |
| filingDate | 2020-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111303395-B |
| titleOfInvention | A kind of preparation method of low molecular weight polycaprolactone |
| abstract | The invention belongs to the technical field of polymer synthesis, and in particular relates to a preparation method of low molecular weight polycaprolactone. The method includes the following steps: S1, in a hydrocarbon solvent, using a bio-based phenol to replace the alkyl aluminum to prepare a bio-based phenol catalyst; S2, adding ε-CL and a hydrocarbon solvent into an anhydrous, oxygen-free, nitrogen-protected reactor , adding a bio-based phenol catalyst to carry out a polymerization reaction to obtain a polymer product, which is washed with ethanol to obtain a polycaprolactone product; wherein, the molecular weight of the low molecular weight polycaprolactone is 7000-40000. The invention adopts the alkyl aluminum substituted by bio-based phenol as a catalyst, has simple polymerization process, low polymerization temperature, short polymerization time, reduces energy consumption and cost, and can control the amount and structure of the bio-based phenol to regulate the polycaprolactone. Stereoregularity, thereby controlling the crystallinity, and then regulating the degradation time and degradation rate of polycaprolactone in the human body, making PCL better used in the field of drug release. |
| priorityDate | 2020-04-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.