| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c45e84de586a335b67f5aede5f09a659 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J2219-00103 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-2465
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-147
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J19-2475
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01D61-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J19-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D65-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D61-14 |
| filingDate |
1998-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fea7b5a9af7bc15c795e3c4b71a66692 |
| publicationDate |
1999-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-9916537-A1 |
| titleOfInvention |
Method of manufacturing polyester using crossflow membrane filtration |
| abstract |
An improved process for the manufacture of polyester resin from the esterification of an aromatic acid with a glycol followed by polycondensation in the presence of a metal oxide catalyst in which a spent glycol stream (10) is removed during the course of the polycondensation reaction along with insolubles, large particulates, low molecular weight oligomers, metal oxide catalyst, cation impurities and anion impurities, and trace amounts of other impurities in which the temperature of the spent glycol stream (10) is increased to maintain the monomer dissolved in solution while passing the spent glycol stream (10) to a crossflow membrane filter (40) with sufficient fluid velocity across the crossflow membrane filter (40) to maintain turbulent flow. The glycol permeate is recycled to the esterification process while the concentrated insolubles are separated from the purged retentate. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8859713-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100771325-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100789053-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8901271-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011020619-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0246269-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0246269-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2287225-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2010102795-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100880071-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6703454-B2 |
| priorityDate |
1997-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |