http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105916864-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1007 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-1014 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-04 |
| filingDate | 2015-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105916864-B |
| titleOfInvention | The manufacturing method of cyclobutane tetracarboxylic acid derivatives |
| abstract | The 1,2,3,4 cyclobutane tetrabasic carboxylic acids 1,2 useful as the raw material of polyimides etc. are provided:Effective manufacturing method of 3,4 dianhydride derivatives.Maleic anhydride chemical combination object shown in formula (1) has that the benzophenone of electron-withdrawing group, substitution have an acetophenone of electron-withdrawing group or substitution has and light dimerization reaction occurs in the presence of the benzaldehyde of electron-withdrawing group and manufacture 1 shown in formula (2) in substitution, 2,3,4 cyclobutane tetrabasic carboxylic acids 1,2:The method of 3,4 dianhydride derivatives.(in formula, R represents the alkyl of hydrogen atom or carbon number 1~20.) |
| priorityDate | 2014-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 235.