| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_70ec63d39d6704bacc5c7068c93ded43 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-80 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-189 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-80 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-189
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-88 |
| filingDate |
1999-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0a869916c31030d2c0196764080c2f5d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7185bde6d1afee6d52fa02430f76758f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cd4ca7f7243a9c361942d69d045e9b49 |
| publicationDate |
2000-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-0001754-A1 |
| titleOfInvention |
Process for crystallising polyethylene naphthalate copolymers in the absence of a devolatilization step |
| abstract |
The present invention provides a process for crystallising polyethylene naphthalate copolymer in the absence of a devolatilization step comprising: a) copolymerising carboxylic acids made up of at least 60 mole % of 2,6-naphthalene dicarboxylic acid; with polyols comprising at least 80 mole % ethylene glycol and from 2 to 20 mole % of a polyol having three or more carbon atoms, based on the total moles of polyols, to form PEN copolymer solids; and b) subsequently crystallising said solids comprising heating said solids to at least their sticking temperature at an average rate of at least 10 °C/min, to form agglomerate-free crystallised solids. In another embodiment of the invention, there is provided a process wherein said crystallising solids are subsequently solid state polymerised. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2004521982-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-1304456-C
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-02068498-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100783197-B1 |
| priorityDate |
1998-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |