| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_97f8939cf76e68731c5704c708ac7a89 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-54 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-327
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-317
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-44 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-327 |
| filingDate |
2019-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_82c661d2e6c2ba7773bfbdb01ad9f9d6
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd6dfc1edbfd5a9cd864606b9dc1e1c3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c4e0860529c3713a53ecdccdc112158a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a14a768e7809b6643854f5f46d0308d |
| publicationDate |
2020-01-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2020001957-A1 |
| titleOfInvention |
Method for preparing mma with high yields |
| abstract |
The invention relates to a method for preparing methyl methacrylate by direct oxidative esterification of methacrolein in high yields compared to the prior art. Methyl methacrylate is used in large quantities for preparing polymers and copolymers, together with other polymerizable compounds. In addition, methyl methacrylate is an important constituent for a variety of specialty esters based on methacrylic acid (MAA) which can be prepared by transesterification with the corresponding alcohol. There is consequently a great interest in very simple, economic and environmentally friendly processes for preparing this starting material. In particular, the present invention relates to an optimized re-processing of the reactor discharge of the oxidative esterification of methacrolein by means of which process specific byproducts can be isolated and can then additionally be converted to alkyl methacrylates, in particular MMA. |
| priorityDate |
2018-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |