http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111040211-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2367-02 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-866 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-6956 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L67-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-83 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-695 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 |
| filingDate | 2019-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111040211-B |
| titleOfInvention | Preparation method and application of biaxially oriented polyester film |
| abstract | The invention discloses a preparation method and application of a biaxially oriented polyester film, wherein the method comprises the following steps: drying the modified polyester chips at the temperature of below 120 ℃, preheating for 0.5-1 h at the temperature of 150-170 ℃, and after melt extrusion, sequentially carrying out longitudinal stretching and transverse stretching to prepare a biaxially oriented polyester film; the preparation process of the modified polyester chip comprises the following steps: dispersing POSS-octa-hydroxypropyl dimethyl silicon base in ethylene glycol, performing ultrasonic dispersion, mixing with terephthalic acid, diphenic acid, 1, 2-propylene glycol, zinc acetate and ethylene glycol antimony, and controlling the molar ratio of alcohol acid to be not less than 1.5: 1, heating to 230-240 ℃ until the water yield reaches more than 95% of a theoretical value, vacuumizing for the first time, heating to 260-265 ℃, reacting for 1-2 hours at constant temperature and constant pressure, vacuumizing for the second time to increase the vacuum degree, reacting for 0.5-1 hour at 265-275 ℃, reducing the pressure, discharging, cooling, and pelletizing to prepare modified polyester chips. The prepared film has excellent optical performance and better mechanical property, and can be applied to optical materials and packaging materials. |
| priorityDate | 2019-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.