| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4f6ee64e420ffdad3e2fb360c93302a0 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C47-22 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L33-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-001
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-75
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C47-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L33-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-39
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-75 |
| filingDate |
2017-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4add079f596ba84662b8a948f05de9d7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c43e209c3022b567e73e8afc3ab63937
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ece40e2ac13f2d61ac9f12c04666d508
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7d6f7d07521abc6d705a118258927c4e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_45df4f13876c0ed4f030bff452cdece1 |
| publicationDate |
2019-03-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-3450422-A1 |
| titleOfInvention |
Method for producing optical moulding compositions |
| abstract |
The present invention relates to a process for the preparation of optical molding compositions based on methyl methacrylate, this MMA was prepared by an optimized method and the molding compositions are characterized in particular by a very low yellowness. The MMA used according to the invention was prepared by direct oxidative esterification of methacrolein.n n n In particular, the present invention relates to an optimized work-up of the reactor effluent from the oxidative esterification of methacrolein, by means of which particularly coloring by-products are removed. In addition, this method has the advantage that less demands have to be made on the apparatus design of the system than described in the prior art. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2023083869-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022022939-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-3945088-A1 |
| priorityDate |
2017-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |