http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4954608-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_01c1e0bc0628f76dea731cda5a666ca1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1067 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate | 1987-06-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1990-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ef6f8ebc2084548b6daaf2420d42f24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_163090ec4a1465be93ee959fcdc3812e |
| publicationDate | 1990-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4954608-A |
| titleOfInvention | Copolymerized polyamic acid salts and process of producing them |
| abstract | A copolymerized polyamic acid salt having a recurring unit represented by following formula (I) and (II) and the process for preparing thereof. ##STR1## wherein (A) or (A') represents a formula ##STR2## wherein, R 1 represents a tetravalent group having at least 2 carbon atoms; R 2 represents a divalent group having at least 2 carbon atoms; and R 31 , R 32 , R 33 , R 41 , R 42 , R 43 , R 5 , and R 6 each represents a monovalent group having 1 to 30 carbon atoms selected from an aliphatic group, an alicyclic group, an aromatic group, a group in which an aliphatic group is combined with an alicyclic group or an aromatic group, each of these groups substituted by a halogen atom, a nitro group, an amino group, a cyano group, a methoxy group, or an acetoxy group, or a hydrogen atom; at least one of said R 31 , R 32 , R 33 , R 41 , R 42 , R 43 , R 5 and R 6 do not take a group having 1 to 11 carbon atoms or a hydrogen atom; and (B) or (B') represents one or more formula ##STR3## wherein R 1 , R 2 , R 31 , R 32 , R 33 , R 41 , R 42 , R 43 , R 5 and R 6 are defined in (A); and x and y represents a ratio which satisfies 0 x 1, 0 y 1 and x+y=1. n In formula (I) at least one of said R 1 , R 2 , R 31 , R 32 , R 33 , R 41 , R 42 , R 43 , R 5 and R 6 do not take the same group as defined in (A), and in formula (II) a part of at least one of R 1 and R 2 is substituted by a group having a different valence. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5919892-A |
| priorityDate | 1986-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 82.