http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4042620-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2dbb2d7ecbd600cf89fbdd230f4a466c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C237-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-00 |
| filingDate | 1975-04-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1977-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_661322fd1e04c992d50a070594685edc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5d7069a1bf12e2850e074f05fcaa5a5d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_84c15e3d42cff233fe8b9fed8d279881 |
| publicationDate | 1977-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4042620-A |
| titleOfInvention | Continuous process for the production of maeamic acids |
| abstract | A continuous process is provided for the preparation of a maleamic acid of the formula: ##STR1## in which: R represents a linear or branched alkylene, arylene, aralkylene, alkylarylene or cycloalkylene radical or a divalent heterocyclic radical, the free valencies of which are attached to carbon atoms, the radical containing 2 to 20 carbon atoms and X represents either a hydrogen atom or the radical: ##STR2## which comprises passing a solution of a primary monoamine or diamine and a solution of maleic anhydride in amounts such that there is a 5 to 20 mol % excess of anhydride, at a temperature of from 40° to 130° C and at a rate greater than 7 m/second through an injection nozzle into a twin screw reactor, the solvent for the primary amine being the same as, or compatible with, the solvent for the maleic anhydride. This process eliminates clogging problems. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108358804-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4438280-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5123951-A |
| priorityDate | 1973-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 94.