http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0436570-A4
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-73927 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G63-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-34 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-82 |
| filingDate | 1989-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1992-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0436570-A4 |
| titleOfInvention | Improved process for manufacture of polyethylene terephthalate film containing slip additive |
| abstract | In a process for the manufacture of polyethylene terephthalate film, especially for application in audio and video tapes, a crystalline sodium aluminosilicate molecular sieve is used both as a slip additive and as the catalyst for the polymerization of di(2-hydroxyethyl phthalate) intermediate. In addition to the fact that this process eliminates antimony trioxide, heretofore used as the polymerization catalyst, the polyethylene terephthalate film made by the process of this invention has considerably fewer defects such as microgel inclusions, black specks, and pimples. Further, the amount of diethylene glycol formed in the process is reduced. Finally, polyethylene terephthalate degradation, contributing to the exudation of lower molecular weight materials, also is reduced. |
| priorityDate | 1988-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.