http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112250845-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-183 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-82 |
| filingDate | 2020-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112250845-B |
| titleOfInvention | Polyester polyol and preparation method thereof |
| abstract | The invention provides polyester polyol which is prepared from the following raw materials in parts by weight: 185-350 parts of PET; 0.15-1.15 parts of a catalyst; 380-1200 parts of poly (carbonate-ether) glycol; 65-117 parts of small molecular diol; 27-59 parts of micromolecular dibasic acid; 0.05-0.26 part of antioxidant. The preparation method of the polyester polyol provided by the invention does not need a complex post-treatment process, so that the energy consumption is greatly saved, and the problem of generating a large amount of three wastes is solved; three groups of sharp spectral peaks appear in the range of 19-24 degrees in the polyester polyol prepared by the invention, which shows that the polyol has excellent crystallization property and can be used as a substitute of the traditional polyester polyol. The invention also provides a preparation method of the polyester polyol. |
| priorityDate | 2020-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 94.