http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111303388-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-916 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-183 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-91 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-183 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-83 |
| filingDate | 2020-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-08-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111303388-B |
| titleOfInvention | Preparation method of hydrolysis-resistant PBT polyester resin |
| abstract | The invention relates to a method for preparing hydrolysis-resistant PBT polyester resin, which comprises the steps of mixing terephthalic acid, 1, 4-butanediol, organic titanate compound and magnesium phosphate to prepare slurry, carrying out esterification reaction to obtain prepolymer, carrying out melt polycondensation reaction to obtain a PBT polyester resin substrate, and finally mixing the PBT polyester resin substrate, a terminal capping modifier and an organic phosphate compound in a double-screw extruder to obtain the hydrolysis-resistant PBT polyester resin; according to the mass fraction, the required addition proportion of each substance in the mixing preparation process is as follows: 97-99 parts of a PBT polyester resin substrate, 0.5-1 part of a terminal-capping modifier and 0.01-1 part of an organic phosphate compound; the end-capping modifier is hyperbranched polyester with 6-100 hydroxyl groups at the end and 2, 2-dimethylolpropionic acid as a branching unit. The preparation method is simple, and the prepared hydrolysis-resistant PBT polyester resin has excellent comprehensive performance. |
| priorityDate | 2020-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 52.