http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H08183840-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e5c1b63f3560d3c7ad0674750b154cb5 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-06 |
| filingDate | 1994-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6b52d1115a8b9114d7da9749178af101 |
| publicationDate | 1996-07-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H08183840-A |
| titleOfInvention | Polymerization method of high molecular weight polyester |
| abstract | (57) [Summary] [Structure] A polyester is obtained by condensing an aliphatic oxycarboxylic acid, dicarboxylic acid and glycol, or a combination of monomers of oxycarboxylic acid / dicarboxylic acid / glycol, which is selected. In the method of manufacturing, It includes a two-step reaction including a first-step reaction in which these monomers are condensed to synthesize a linear oligomer, and a second-step reaction in which a catalyst is added to the oligomer and polycondensed to increase the molecular weight. [Effects] 220 to 260 are used as an inert gas in the polymerization atmosphere without isolating a cyclic compound such as lactide or glycolide. It is possible to provide a biodegradable aliphatic high-molecular polyester without heating at a high temperature such as ℃. Since water is removed to the outside of the reaction system, it is not necessary to use an azeotropic organic solvent. Further, since the polymerization temperature is relatively low, the degree of polymerization can be increased even if the replacement with the inert gas is not sufficient. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9080008-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9023953-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111647145-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2009142196-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8173753-B2 |
| priorityDate | 1994-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.