http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S55145731-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_95136e4276343dbae035a63330dabfc7 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 |
| filingDate | 1979-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8651de28de075f5a7afb5e4d09d7e827 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a6a21782ef7c064acf1f4a47f98d067 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ab27c1dfb36c46ce0d438681c4ffb08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c46219d96a8cc9623d00e8492939353d |
| publicationDate | 1980-11-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S55145731-A |
| titleOfInvention | Preparation of polyester with high terminal carboxyl group content |
| abstract | PURPOSE: To obtain a titled polyester with little generation of volatile components when heat-melted and being useful as a raw material for fiber or the like, by polycondensing a low-molecular polymer containing ethylene terephthalate as a main constituent in the presence of a catalyst such as an antimony compound or a germanium compound. n CONSTITUTION: Terephthalic acid and ethylene glycol are directly subjected to the esterification reaction in 90W93% esterification ratio, and a lows molecular polymer having value expressed by the formula of 90W93 is obtained. Subsequently, this low- molecular polymer is polycondensed by using an antimony compound such as antimony trioxide, antimony trichloride, or antimony acetate or and a germanium compound such a germanium dioxide, germanium ethoxide, or dimethylgermanium diacetate as a catalyst to obtain a titled polyester in which above 80% of a total terminal group is carboxyl group. n COPYRIGHT: (C)1980,JPO&Japio |
| priorityDate | 1979-05-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.