| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8857d9285f4a393618523d052bf765df |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-149 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-33
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C27-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-149 |
| filingDate |
2001-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2009-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c9e0474ff5734babcfa1596822c605db
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8f491a7f3d996539bc6e1e2795070f6f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_60bea74afd4eb6d75f9b6df0f9285b61
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ddda3b6ef340934ce792e98ee492869e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fc2222c476ef2929c669b7b6cd77e329 |
| publicationDate |
2009-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2418280-C |
| titleOfInvention |
Two-stage process for the hydrogenation of maleic acid to 1,4-butanediol |
| abstract |
In the process for the conversion of maleic acid to gamma-butyrolactone. 1.4 - butanediol and/or tetrahydrofuran, a feedstream comprising maleic acid is hydrogenated in a first hydrogenation zone to produce a reaction product comprising succinic acid and unreacted hydrogen which is then supplied to a second hydrogenation zone, where succinic acid is converted to 1,4-butanedio l, the temper atures of the feedstream comprising maleic acid and the first hydrogenation zone are controlled such that the temperature of maleic acid i n the feedstream and the first hydrogenation zone does not exceed about 130 ~C , thereby minimizing the corrosive effects of the maleic acid and prolonging reactor life and improving overall process economics. |
| priorityDate |
2000-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |