http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5738819-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_129e393582e6bdf4029baf2206522f45 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-66 |
| filingDate | 1980-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5500c3e1672d17515c91078e2a86a6f0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a478faeda003ee02bac87f17882d34d8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf1161537fe50212cbb5f53cb221f39d |
| publicationDate | 1982-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5738819-A |
| titleOfInvention | Production of polyester-polyether copolymer |
| abstract | PURPOSE: To produce titled copolymer having excellent transparency, by esterfying a dicarboxylic acid with a glycol and a polyalkylene glycol in the presence of an organotitanium compound and a specified polyhydric alcohol and, thereafter, polycondensing the resulting ester. n CONSTITUTION: A dicarboxylic acid component (A) containing at least 50mol% aromatic dicarboxylic acid is esterified with a glycol (B) containing at least 70mol% 1,4-butanediol and a polyalkylene glycol (C), MW400W6,000, in the presence of an organotitanium compound (D) as an esterifying catalyst containing 0.001W 0.03wt% Ti based on polymer formed, e.g., tetraalkyl titanate, and at least 1.0mol time (with respect to Ti of component D) and up to 0.4mol% (based on component A) of polyhydric alcohol (E) of the formula, wherein R is hydrocarbyl or methylol, at a temperature which is raised gradually from about 150 to 220W240°C. Then, the reaction system is gradually evacuated to below 1mmHg and the reaction mixture is polycondensed at 230W250°C. n COPYRIGHT: (C)1982,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4685455-A |
| priorityDate | 1980-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.