| Predicate |
Object |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-692
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-698
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-681
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-698
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-692
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 |
| filingDate |
2018-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2021-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-111187401-B |
| titleOfInvention |
Preparation method of polyester polyol |
| abstract |
The application discloses a preparation method of polyester polyol, which comprises the following steps: and carrying out ester exchange reaction on raw materials containing inorganic oxoacid ester and polyhydric alcohol to obtain the polyester polyol. The polyester polyol obtained by the method has high heat resistance. |
| priorityDate |
2018-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |