http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111892701-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-20 |
| filingDate | 2020-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111892701-B |
| titleOfInvention | A kind of biodegradable copolyester and preparation method thereof |
| abstract | The invention relates to the field of polymer materials, in particular to a biodegradable copolyester and a preparation method thereof, wherein the raw materials for the preparation include diols, alkoxylated branched chain alcohols, dibasic acids and titanate; wherein , the amount of the alkoxylated branched alcohol accounts for 0.05 to 0.15wt% of the degradable copolyester; it is prepared by the following method: (1) dibasic alcohol, alkoxylated branched alcohol, Add the dibasic acid and the first batch of titanate to the reaction kettle for esterification reaction for 1.5-4.5 hours; (2) heat up the system after the above-mentioned esterification reaction, and vacuumize the pre-condensation reaction for 1.5-2.5 hours; ( 3) After the above precondensation reaction is completed, add the second batch of titanate and phosphoric acid for reaction, then vacuumize for polycondensation reaction, cool down and discharge. The boiling points of glycerin and trimethylolpropane are significantly increased by alkoxylation, and the degradable copolyester maintains sufficient thermal stability through the number of alkoxy units. |
| priorityDate | 2020-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 145.