http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-115181220-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F283-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L51-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-676 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-85 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L51-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-676 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F283-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F212-08 |
| filingDate | 2022-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-12-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-115181220-B |
| titleOfInvention | A kind of preparation method and application of p-phenylene type unsaturated polyester resin |
| abstract | The invention relates to the technical field of unsaturated polyester resins, in particular to a preparation method and application of p-phenylene unsaturated polyester resins. Due to the defects of poor reactivity, slow reaction, long production cycle and high cost due to the p-benzene structure such as terephthalic acid used in the raw materials, the p-phenylene resin has not yet been maturely applied. The preparation method includes an esterification reaction stage, a capping stage, and a dilution stage in sequence; in the capping stage, the material is cooled to 115-135°C and dicyclopentadiene is added; the dibasic acidic components include terephthalic acid and maleic dicarboxylic acid. anhydride. In the form of first esterification and then end-capping, dicyclopentadiene is inserted into the remaining reactive long polyester chain in the form of a similar end-capping agent, which avoids the premature participation of dicyclopentadiene in the chain termination reaction and avoids the polyester molecular weight Low resin strength and other performance degradation problems, not only greatly improve the reaction efficiency of terephthalic acid, but also improve the chemical corrosion resistance, heat resistance and mechanical properties of benzene-type unsaturated polyester resin. |
| priorityDate | 2022-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.