http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H01289830-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_02ff914937eb6ceaee5ca69cc56cbfa7 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G63-60 |
| filingDate | 1988-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e4db01c04770405a6ba09144de6ca462 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b3feca65db9d60b16418251cd8303722 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_01d2e42e3c24c4819f0603746a3cd173 |
| publicationDate | 1989-11-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H01289830-A |
| titleOfInvention | Thermotropic, wholly aromatic polyester |
| abstract | PURPOSE: To obtain the title polyester of improved modulus and heat resistance by using four specified kinds of structural units. n CONSTITUTION: An equimolar mixture of a dicarboxylic acid (e.g., terephthalic acid) with an acetylated dihydroxy compound (e.g., bisphenol diacetate) is added to acetylated p-hydroxybenzoic acid and m-hydroxybenzoic acid, and the obtained mixture is polycondensed through deacetylation at 250-420°C in a vacuum to obtain the title polyester composed of a condensate composed of structural units of formulas I-IV (wherein R 1-4 and R' 1-4 are each H, methyl, ethyl or a halogen, p and q are each 0-1, k, l and m are the molar ratios of the respective units, 99≥k/l≥1 and 1≥m/k+l≥1/49), having an ability to exhibit melt anisotropy, an intrinsic viscosity of 1.0-5.0dl/g and a flow initiation temperature of 200-400°C and having a crystal size of 30-60Å and a bending strength at least one direction ≥20GPa. n COPYRIGHT: (C)1989,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9429365-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100700371-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H03174439-A |
| priorityDate | 1988-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.