| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-82 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-149
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-19
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C31-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-82 |
| filingDate |
1999-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_44ed9ebf38da87d4be9eea8f2b980656
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_51cf76a9d590265b1308477f66730d28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9df4672cb5f7f18b1d2e8bc61993520 |
| publicationDate |
2000-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1060155-A1 |
| titleOfInvention |
Method for distilling mixtures containing butanediol |
| abstract |
The invention relates to a method for separating a mixture containing butane-1,4-diol and at least one other compound from the following group: 4-hydroxybutyraldehyde, its cyclical hemiacetal and its cyclical whole acetals with at least one other alcohol, by distillation. The distillation is carried out in the presence of a compound which acts as an alkali. The mixture to be separated preferably contains a cyclical whole acetal of 4-hydroxybutyraldehyde with the other alcohol, this alcohol having a lower boiling temperature than butanediol and being in free form. The method is especially suitable for distilling and separating mixtures produced in the hydrogenation of maleic acid derivatives. |
| priorityDate |
1998-03-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |