| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2a146480b65543bcb53f7c81c621ec54 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29C2045-1883
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2105-0002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-183
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-1352 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-85
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-78 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-183 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-85
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-90 |
| filingDate |
2001-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2004-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aefeb3e1938f8f1fc2c0a18e1a5d2bd4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_19f4c5cca551a0e285055fca383f7df4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c75f08d98dcd3f2df3d7d4d877445edb |
| publicationDate |
2004-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
ES-2217068-T3 |
| titleOfInvention |
PROCEDURE FOR THE MANUFACTURE OF POLYESTERS WITH A REDUCED CONTENT IN FREE ACETALDEHYDE. |
| abstract |
Process for the manufacture of polyesters with a reduced content of free acetaldehyde from terephthalic acid and ethylene glycol through a melt catalyzed polycondensation, in which a) the catalyst is added before polycondensation, b) after reaching a viscosity intrinsic (VI) of the melt of 0.63 to 1, 00, which is reached without subsequent solid phase condensation, an inhibitor is added to deactivate the catalyst and c) then an excess of a substance that binds acetaldehyde is added free so that acetaldehyde is subsequently released, while maintaining a temperature below 280 ° C throughout the polycondensation process. |
| priorityDate |
2000-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |