http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0004405-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dcb88e6c103e4974b104452c51fbb4a5 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-567 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-573 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-89 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-573 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-567 |
| filingDate | 1979-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_17e8e8cb196b4f88ab8c320ffb4f022a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7dcb954a5e7517375bc926ec6c71cd7e |
| publicationDate | 1979-10-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0004405-A2 |
| titleOfInvention | Process for the formation of high-purity tetrahydrophthalic acid anhydride |
| abstract | The subject matter is a process for the preparation of highly pure Δ 4-tetrahydrophthalic anhydride by introducing 1,3-butadiene into maleic anhydride at temperatures of 60-160 ° C. and pressures of 1-10 bar with stirring and subsequent cleaning. The process is particularly characterized in that maleic anhydride and butadiene are used in a molar ratio of 1: 1-1.3 and the subsequent purification of the molten reaction product in a washer filled with ceramic, porcelain, metal, glass or plastic packing in countercurrent in the presence of Carries out inert gas, excess butadiene being driven off overhead and all polymeric impurities of the crude tetrahydrophthalic anhydride sticking to the packing. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101284825-B |
| priorityDate | 1978-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.