http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1091234-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_20688220cab72ad01902ff5223732946 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-863 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 |
| filingDate | 1966-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_87265549db7bba564d96b2c7c5f219ff http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22d4e463a23c5242cc925549eff43381 |
| publicationDate | 1967-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1091234-A |
| titleOfInvention | Process for the preparation of polyesters of terephthalic acid and glycols |
| abstract | In the manufacture of polyesters by polycondensing a glycol terephthalate, the polycondensation catalyst used is a preformed solution made in a separate step by heating germanium dioxide and a glycol at 210 DEG to 300 DEG C. and under a pressure of 1.5 to 15 atmospheres absolute. Specified glycols are ethylene glycol and 1:4-di-(hydroxymethyl)-cyclohexane. The glycol terephthalate monomer is preferably made by a transesterification reaction using as a catalyst a compound of an alkali metal, an alkaline earth metal, Zn, Cd, Mn, Pr, Ce or La. Examples describe the manufacture of polyethylene terephthalate from dimethyl terephthalate and ethylene glycol. |
| priorityDate | 1966-05-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.