http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20020004242-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b5b9f9cd8f41ddd9b8e5bc26a4d68518 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C217-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02F1-133723 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C213-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C213-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C211-50 |
| filingDate | 2000-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ad532a2fa4df30f6531ce89b5d933b53 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4b767e2e36f3678899b03f3aadac45c1 |
| publicationDate | 2002-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20020004242-A |
| titleOfInvention | 3,3'-Bis[(4'-R-4-stilbenyl)oxyalkyloxy]biphenyl-4,4'-diamine and preparing method thereof |
| abstract | The present invention provides a 3,3'-bis [(4'-R-4-stilbenyl) oxyalkyloxy] biphenyl-4,4'-diamine represented by the formula (1), a preparation method thereof, and an aromatic polyimide formed therefrom. And a liquid crystal display device comprising an alignment film made of this aromatic polyimide.n n n n n n n n n n Wherein R is selected from the group consisting of halogen atoms, CN, CF 3 , OC j H 2j + 1 and C j H 2j + 1 , wherein j is a number from 2 to 12, m is from 2 to 12 Is the number of. The 3,3'-bis [(4'-R-4-stilbenyl) oxyalkyloxy] biphenyl-4,4'-diamine of the formula (1) according to the present invention is a unit for polymer synthesis such as polyamide, polyimide, etc. Useful as The aromatic polyimide of Chemical Formula 2 prepared therefrom has excellent solubility in organic solvents as compared to the aromatic polyimide prepared from conventional biphenyl-4,4'-diamine. Therefore, an aromatic polyimide can be processed directly, without going through the imidation process using the polyamic acid which is a polyimide precursor. Moreover, the liquid crystal display element provided with the oriented film of the said aromatic polyimide is excellent in the pretilt angle characteristic. |
| priorityDate | 2000-07-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.