http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H01108227-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1374dd16777534b65ad4422333245af8 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate | 1987-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_205b121f36f7ae0d5b0508ae0db918a2 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0c1626391a543d1ee2eb30bfa7b50a73 |
| publicationDate | 1989-04-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H01108227-A |
| titleOfInvention | Novel polyimide precursor |
| abstract | PURPOSE: To obtain the title precursor which shows low crystallizability and excellent stretchability during heat stretching, by reacting a specified acid component with a specified aromatic diamine component. n CONSTITUTION: An acid component containing at least 80mol% compound (A) of formula I or II [wherein R 1W2 are each a 1W18 C aliphatic hydrocarbon group (derivative), a 6W18 C aromatic hydrocarbon residue (derivative), a 6W18 C aliphatic hydrocarbon residue (derivative), and Ar is an aromatic tetracarboxylic acid residue] is reacted with an aromatic diamine component (B) having bonds for chain extension which are coaxial, nearly coaxial or parallel with each other or extend in opposite directions and forming preferably a rigid or similar skeleton in the presence of, optionally, an acid acceptor in a polar solvent to obtain the title precursor in which units of formula III (wherein Ar' is an aromatic diamine residue) and units of formula IV, in an amount to give a molar ratio formula III/formula IV of 80W20/20W80, account for at least 80mol% of the total repeating units. n COPYRIGHT: (C)1989,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7189488-B2 |
| priorityDate | 1987-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID6547 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID414859283 |
Total number of triples: 14.