http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S63270730-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_33dafb5bbc2ec47ebcb7becbbe60f704 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-66 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-60 |
| filingDate | 1987-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bffe20458a1738beb36ad070b0577b9a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3027cff7ce80068151d0a602a70f3eb |
| publicationDate | 1988-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S63270730-A |
| titleOfInvention | Wholly aromatic thermotropic liquid crystal polyester |
| abstract | PURPOSE: To obtain the title polyester which is excellent in moldability and can give a molding excellent in mechanical and thermal properties, comprising four specified kinds of recurring units. n CONSTITUTION: A 4-hydroxybenzoic acid (derivative) (A) is polymerized by melting with terephthalic acid (derivative) (B), 4,4'-dihydroxydiphenyl (derivative) (C) and 4,4'-dihydroxydiphenyl ether (derivative) at 200W400°C for 1W10hr in the presence of, optionally, 0.001W1wt.% polymerization catalyst in an inert gas atmosphere or in a vacuum to obtain the title polyester comprising 30W80mol.% units of formula I (wherein at least part of the hydrogen atoms. bonded to the ring may be replaced by substituents: the same applies also in formulas IIWIV), 10W35mol.% units of formula II, 2.5W25mol.% units of formula III and 5W30mol.% units of formula IV (the total of units of formula III and units of formula IV is substantially equimolar to units of formula II), having a logarithmic viscosity ≥0.5dl/g (as determined in pentafluorophenol in a 0.1wt./ vol. concentration at 60°C) and can form an optically anisotropic molten phase at 375°C or below. n COPYRIGHT: (C)1988,JPO&Japio |
| priorityDate | 1986-12-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.