| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_60442fdc20fd71481fc3d6b8cdee2c31 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1071
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1067
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1064
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-101
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G59-10 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G59-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G59-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate |
1974-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1975-05-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_60a8ec1433c3529e86b0f6b95aaf27c6 |
| publicationDate |
1975-05-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3886119-A |
| titleOfInvention |
Epoxy end-capped aromatic polyimides |
| abstract |
Epoxidized aromatic polyimides and processes for their preparation are provided. The epoxidized polyimides are prepared by reacting a diamine of the formula WHEREIN Ar is a divalent aromatic organic radical, Ar'' is a tetravalent aromatic organic radical and N IS A POSITIVE INTEGER OF AT LEAST 1, WITH 1 TO 4 MOLES OF AN EPOXY COMPOUND (SUCH AS EPICHLOROHYDRIN) OF THE FORMULA WHEREIN X is halogen and R'' is hydrogen or a hydrocarbon radical of 1 to 6 atoms. The reaction is conducted in the presence of an organic or inorganic base at a temperature between ambient and about 100*C. The epoxidized polyimides can be cross-linked by melt reaction, self-reaction or catalysis depending upon the number of epoxy end-groups. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5268432-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4808441-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4931365-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4385165-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4296219-A |
| priorityDate |
1974-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |