http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-0110812-A9
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_33f499b4dcb231f910dcb86153ca5bbd http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4d0bc14697bfe2291a34832d1b7fdd67 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0066173f71a5df6aba7864685d7a0501 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-82 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-54 |
| filingDate | 1999-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c1354daca3fcc11109d2f8d26d7e12df http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4dca2729516d00260082b9bc9a77dfed |
| publicationDate | 2001-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-0110812-A9 |
| titleOfInvention | METHODS FOR THE PREPARATION OR PURIFICATION OF BIS-β-HYDROXYETHYL TEREPHTHALATE |
| abstract | A method which comprises heating an aromatic polyester together with bis-β-hydroxyethyl terephthalate and/or low condensates thereof to conduct predecomposition, and reacting the predecomposition mixture with ethylene glycol to convert the terephthalic acid components contained in the mixture into bis-β-hydroxyethyl terephthalate and/or low condensates thereof; a method which comprises bringing the solution composition obtained by the above process into contact with a cation exchanger and/or an anion exchanger to thereby obtain bis-β-hydroxyethyl terephthalate lowered in ion content; and a method which comprises subjecting a bis-β-hydroxyethyl terephthalate containing mixture lowered in ion content to preliminary evaporation or distillation to thereby distill away low-boiling compounds, and subjecting the resulting mixture to evaporation or distillation in vacuo to thereby obtain pure bis-β-hydroxyethyl terephthalate having a total content of cations and anions of 15 ppm or below. |
| priorityDate | 1999-08-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.