| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6c8d4dc7bd1a30d8fda907fceaeb4e69 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-353
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-43
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-15 |
| filingDate |
1997-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aa34e077eb31e7afeb5df0c29d296bca
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a7473fc579262d489681712d7858a88e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7308745f94ce67da68d073b5fd2e2107 |
| publicationDate |
1998-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H10218833-A |
| titleOfInvention |
Method for producing fumaric acid |
| abstract |
PROBLEM TO BE SOLVED: To provide an industrially advantageous method for producing fumaric acid, in which high-purity fumaric acid crystals can be efficiently obtained. A method for producing fumaric acid by isomerizing maleic acid in an aqueous medium in the presence of thiourea, A method for producing fumaric acid, comprising heating the mixture at a temperature in the range of 70 to 150 ° C. for 0.5 hour or more after completion of the isomerization reaction, and then collecting fumaric acid crystals. |
| priorityDate |
1997-02-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |