| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dcb88e6c103e4974b104452c51fbb4a5 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-56 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C43-303
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C43-305
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-50 |
| filingDate |
1993-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1995-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_56722d11aaf8539f247ea0cabb05934c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_29c56b64d3c58a8276d3c66bf4f3cb5a |
| publicationDate |
1995-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-5399778-A |
| titleOfInvention |
Process for the preparation of ketals |
| abstract |
Ketals of longer-chain or branched alcohols are prepared from dimethyl ketals or their ketones by reaction of the dimethyl ketals and the alcohols at high temperatures of 150 DEG to 180 DEG C. in the presence of acid catalysts. The enol ethers and mixed ketals which are separated by distillation are added to the next reaction batch and also react to form the target product. The starting material, dimethyl ketal, may also be formed during the reaction from the ketone and trimethyl orthoformate. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8846981-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6235944-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6235956-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007197807-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19859590-B4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8632943-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7473798-B2 |
| priorityDate |
1992-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |