| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_18a8284bc1d41fe092e46c249d6220be |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-866
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-83 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-82
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L67-03
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/C08G63-183 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 |
| filingDate |
2010-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2014-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bf0c48d02cdcde19ba92244a5f581cd0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7b712cef7b83d3ce6c11724b2f70eeb3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9e16f7d20d5803139e455c089cea2477 |
| publicationDate |
2014-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
ES-2436443-T3 |
| titleOfInvention |
Process for making polyethylene terephthalate |
| abstract |
Process for the manufacture of polyethylene terephthalate (PET) from ethylene glycol (EG), terephthalic acid (PTA) and optionally up to 30 mol% of comonomer, using a catalyst system consisting essentially of antimony compounds (Sb), zinc (Zn) and phosphorus (P), comprising the steps of: a) esterifying EG and PTA to form diethylene glycol terephthalate and oligomers (DGT), and b) polycondensing the DGT in the melting phase to form polyester and EG; wherein the compounds of Sb and P are added in step a) and the compound of Zn is added after step a). |
| priorityDate |
2009-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |