| Predicate |
Object |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-31
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F20-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-60 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-62
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C43-303
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-54 |
| filingDate |
2009-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate |
2012-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2012512859-A |
| titleOfInvention |
Methyl methacrylate purification method |
| abstract |
A process for the purification of methyl methacrylate (MMA) is described. The method includes contacting liquid MMA containing impurities with a sulfonic acid resin in the presence of formaldehyde or a suitable source of methylene or ethylene of formula I. (R 5 and R 6 are independently selected from C 1 to C 12 hydrocarbons or H; X is O or S; n is an integer from 1 to 100; m is 1 or 2. ). The compound of formula I may be a suitable source of formaldehyde. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022080269-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022080270-A1 |
| priorityDate |
2008-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |