http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20020075408-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-183 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-03 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-183 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| filingDate | 2000-08-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2002-10-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20020075408-A |
| titleOfInvention | Continuous Process for Producing Bis(3-Hydroxypropyl) Terephthalate |
| abstract | The present invention relates to a process for the continuous preparation of at least one of bis (3-hydroxypropyl) terephthalate and low molecular weight oligomers of 1,3-propanediol with terephthalic acid. According to the process of the invention, the lower dialkyl esters of preheated (about 150 to about 200 ° C.) 1,3-propanediol and preheated (about 150 to about 220 ° C.) terephthalic acid are from about 1.2: 1 to about 2.3: 1 Of the mixture is fed to a transesterification vessel to effect continuous transesterification of the mixture. The liquid reaction mixture is continuously heated and mixed at a temperature of about 215 to about 250 ° C. and a pressure of about 800 to about 1,000 mmHg. The gaseous reaction product is continuously separated from the liquid reaction mixture, and the stream of liquid reaction product containing bis (3-hydroxypropyl) terephthalate and low molecular weight oligomers of 1,3-propanediol with terephthalic acid is transesterified. It is continuously removed from the base of. |
| priorityDate | 2000-02-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.