http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H01193240-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6cfc033f059d282fcd915bc8be2ae53f http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b5bb9fe83891e9132cccb8642a0e6c87 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08 |
| filingDate | 1988-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_15b271fd08814284b0645b84c7f025a0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_968b57a6c585be7c5be0cbefe3ec5b99 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ae683e19368dac30ba4c2b81ef4690c5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9b98137cc874e953e2d6b3f3e0df0c61 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b210b46eefbb7c02b736897635ec95e5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7dfb37a561bb8efe4b92caa47174c31f |
| publicationDate | 1989-08-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H01193240-A |
| titleOfInvention | Production of methyl methacrylate |
| abstract | PURPOSE: To obtain the title compound, by extracting methacrylic acid from an oxide, etc., of isobutylene and esterifying the resultant methacylic acid with methanol, distilling and purifying the obtained ester using a solvent selected from 6C or 7C aliphatic hydrocarbons in all the steps of extraction, esterification reaction, distillation and purification. n CONSTITUTION: An aqueous solution of crude methyl methacrylate obtained by catalytic oxidation of isobutylene, tert-butyl alcohol or methacrolein (containing at least acrylic acid and acetic acid as impurities) is brought into contact with a solvent (e.g., hexane, heptane, cyclohexane or dimethylpentane) selected from 6C or 7C aliphatic hydrocarbons in an amount of 1.0W5.0 times based on the methacrylic acid to extract the methacrylic acid, acrylic acid and others. The extracted liquid is then subjected to esterification reaction with methanol in a molar amount of 1.0W1.5 times based on the amount of the methacrylic acid in the presence of a strong acidic cation exchange resin and the resultant substance is subsequently distilled to afford the aimed purified methyl methacrylate. n COPYRIGHT: (C)1989,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2007099071-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7718039-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013164216-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2085376-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014146961-A1 |
| priorityDate | 1988-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.