| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_97f8939cf76e68731c5704c708ac7a89 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-347
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-377
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-01
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-377 |
| filingDate |
2005-01-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b2fe536f0e81a8ed74124424362322b1
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd6dfc1edbfd5a9cd864606b9dc1e1c3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_15d2bd67d032ccf5681702f30aedb9d3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_850ebdc7c064a48781c56dba637cd54e |
| publicationDate |
2005-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2554374-A1 |
| titleOfInvention |
Process for preparing alpha-hydroxy carboxylic acids and esters thereof |
| abstract |
The invention relates to a method for the selective, economical production of methacrylic acid and methacrylic esters on the basis of acetone cyanhydrin. According to the inventive method, 2-hydroxy-2-methylpropionic acid is produced by reacting acetone cyanhydrin with sulfuric acid in the presence of water and a suitable polar solvent, and is isolated. The 2-hydroxy-2-methylpropionic acid so produced is used to produce methacrylic acid by .beta. elimination of water. |
| priorityDate |
2004-02-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |