http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114213637-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_573184de397364556938ab60be29f529 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-87 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-83 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-87 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 |
| filingDate | 2021-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0f15bcdd4a12656b34d5832f88fd3f1e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3fc76174643d722d21cf4a80b4f36bbe http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81fded17e232746b9cd255581956f5be http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23f1d31fea9bb10045131541dffe0175 |
| publicationDate | 2022-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-114213637-A |
| titleOfInvention | Synthetic method of high-molecular-weight polylactic acid |
| abstract | The invention provides a method for synthesizing high molecular weight polylactic acid, which comprises the steps of taking high-purity L-lactide as a raw material, mixing the lactide with a novel initiator and a catalyst, heating to ensure that the lactide is subjected to ring-opening polymerization in a reactor, and preparing the high molecular weight polylactic acid. The novel initiator and the catalyst are matched for use, the catalyst not only has an activating effect on the monomer, but also can have an activating effect on the initiator, and the rate and controllability of the lactide ring-opening polymerization reaction are improved. The method of the invention improves the molecular weight of the polylactic acid, the molecular weight of the synthesized polylactic acid can reach more than 20 ten thousand g/mol, the reaction condition can be controlled, the production cost is reduced, the polylactic acid is easy to process and form, and the method is beneficial to the industrialized production and application of the polylactic acid biodegradable material. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115232102-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115260478-A |
| priorityDate | 2021-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 74.