http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-101451481-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L67-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-181 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J11-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-181 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L67-03 |
| filingDate | 2012-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2014-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-101451481-B1 |
| titleOfInvention | Synthesis of polyethylene isophthalate using acid catalysts |
| abstract | In the process of producing polyethylene isophthalate using isophthalic acid and ethylene glycol as raw materials, the esterification catalyst for increasing the molecular weight and the new catalyst replacing the antimony-based catalyst, which is the object of enforcement of environmental regulations, A process for producing polyethylene isophthalate which can simplify the process and produce a polyethylene isophthalate having a high molecular weight is disclosed. (A) esterifying a mixture of isophthalic acid and ethylene glycol by adding an esterification catalyst; And (b) adding a condensation polymerization catalyst to the reactant produced in the step (a) to perform a condensation polymerization reaction, wherein the esterification catalyst comprises a tetraalkylammonium compound, and the condensation polymerization catalyst comprises sulfuric acid And a method for producing polyethylene isophthalate. |
| priorityDate | 2012-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 76.