http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H01197522-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ad2cd796f8c4dcb425ddcc68707d3444 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 |
| filingDate | 1988-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9608aa58bec32d3aab7978be683ba371 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7c4f50ce575e7f986f15d07059cc6891 |
| publicationDate | 1989-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H01197522-A |
| titleOfInvention | Preparation of polyester |
| abstract | PURPOSE: To make it possible to polymerize a polyester cyclic oligomer at a relatively low temp. without using any catalyst and to obtain a polyester being colorless, transparent and having high purity, by heating the polyester cyclic oligomer in the presence of a heating medium. n CONSTITUTION: A purpose polyester is obtd. by feeding a polyester cyclic oligomer which is 2W10-mers derived from arom. dicarboxylic acids (homolog) and glycols, being ground, if necessary, in a reaction vessel, adding thereto a heating medium such as hydrogenated triphenyl or alkyldiphenyl and heating and melting it with stirring under N 2 flow at, e.g., 280°C for 1hr. Then, the heating medium in the obtd. polymer is extracted with acetone and removed. n COPYRIGHT: (C)1989,JPO&Japio |
| priorityDate | 1988-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 16.