http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H08198961-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ad8be5613da19d081abd4348946c0408 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-85 |
| filingDate | 1995-01-24^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_522e57300b82a212c0b46116b91cc6bb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_323336fdf278294c8cc4a83f13bab69d |
| publicationDate | 1996-08-06^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H08198961-A |
| titleOfInvention | Method for producing polyester / polyether copolymer |
| abstract | (57) [Summary] [Objective] The amount of tetrahydrofuran by-product during the esterification reaction is reduced, and a polymer having a high degree of polymerization is obtained by a polycondensation reaction for a shorter time. [Structure] Dicarboxylic acid containing aromatic dicarboxylic acid as a main component, and molecular weight 2 containing 1,4-butanediol as a main component 2 Diol less than 50 and number average molecular weight 400-400 A polyalkylene glycol of 0 and an organotitanium compound, an organotin compound and an organozirconium compound It is produced by carrying out an esterification reaction and a polycondensation reaction using a catalyst of a kind. The number of zirconium atoms and the number of tin atoms are preferably 0.03 to 0.6 and 0.05 to 1.5 per 1 atom of titanium in the catalyst. A highly polymerized polyester / polyether copolymer can be produced with high production efficiency and at low cost. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2004277560-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2004269787-A |
| priorityDate | 1995-01-24^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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