http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1209460-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a22da5b7dd6ed60a21538e5edb23e051 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1085 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-10 |
| filingDate | 1967-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1970-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1209460-A |
| titleOfInvention | Polyimides containing 2,5-diamino-1,3,4-thiadiazole |
| abstract | 1,209,460. Polyamide acids and polyimides. MONSANTO CO. 18 Dec., 1967 [21 Dec., 1966], No. 57406/67. Heading C3R. . A polyimide containing less than 2% by wt. of hydrogen consists essentially of recurring units of the formula wherein R is a tetravalent aromatic radical comprising at least one benzene ring, and can be made by reacting the diamine with a dianhydride of the formula and heating the resulting polyamide acid until the polyimide is formed. Various anhydrides wherein R contains not more than 6 C-H bonds are mentioned. In examples polyamide acids are prepared from pyromellitic anhydride (1) in demethylacetami de to give a film-casting, solution; and (2) in a 6/1 N-methyl-2-pyrrolidone/hexamethylphosphoramide mixture to give a spinning dope; and (3) from benzophenone tetracarboxylic dianhydride in dimethylacetamide. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5244999-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5175224-A |
| priorityDate | 1966-12-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.