| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_57daec5f51e6efc3b1d9b8ff53e32a64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dac6b02c5b4a49388b8c90f2609861ba
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4e095961405201a2dd5688b370233a3e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7a15e987362afc2ec38232509f43dde8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f02ba0dcfdf3e9b42dac82aa20fec393 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L33-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C57-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B37-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-06 |
| filingDate |
2011-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2015-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_701870d0f1a85c7f013d30483e0e04b3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fe6048110e672407021c995f9b28bc2a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9228e1e4bd5fd6f82496f69f90527690
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64053529aff4dc746065acab3a25a417 |
| publicationDate |
2015-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-9174913-B2 |
| titleOfInvention |
Process for the production of methacrylic acid and its derivatives and polymers produced therefrom |
| abstract |
A process for the production of methacrylic acid is described. The process comprises the base catalysed decarboxylation of at least one or a mixture of dicarboxylic acids selected from itaconic, citraconic or mesaconic acid. The decarboxylation is carried out in the range greater than 240 and up to 275° C. to provide high selectivity. The methacrylic acid product may be esterified to produce an ester. A method of preparing polymers or copolymers of methacrylic acid or methacrylic acid esters using the process is also described. Optionally, the process may be preceded with a decarboxylation and, if necessary, a dehydration step on a source of pre-acid such as citric acid or isocitric acid. |
| priorityDate |
2010-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |