| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d669af06cb2abbcd6823699582a97002
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ec361cf7a6412a07a4e7cfccc45581ef |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-183
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-85
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-82 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-183
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-85
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 |
| filingDate |
1998-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_116f04919928bbbd0d4f5a55ca859321
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_70f3501bbe3c35a8130b69cb79657b39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_767ccd4485d9feb49c6dc50a6319efe5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e8db0323184fbdec93ca2412a97e7ae3 |
| publicationDate |
1998-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0859020-A2 |
| titleOfInvention |
Process for the production of polypropylene terephthalate |
| abstract |
Polypropylene terephthalate with not more than 5 ppm acrolein and not more than 3 ppm allyl alcohol and process for its preparation by direct esterification of terephthalic acid with 1,3-propanediol in the presence of 30 to 200 ppm titanium in the form of at least 50 mol% TiO 2 -Precipitate-containing inorganic esterification catalyst, blocking of the esterification catalyst after the esterification by adding 10 to 100 ppm phosphorus in the form of a phosphorus-oxygen compound and subsequent precondensation and polycondensation in the presence of 100 to 300 ppm antimony in the form of a conventional antimony polycondensation catalyst and optionally usual color toners is obtained. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0061657-A1 |
| priorityDate |
1997-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |