http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2623489-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C43-13 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C29-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-01 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C41-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C29-38 |
| filingDate | 2011-09-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_72eca14b0a5ceb7ee2180952ba1c256f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a21ba181cb0c18058e61df45f9c57f42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7fe395b31f9861f67d790cf5c944253a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_45700f6e749b539a9b3130eac30a1d7d |
| publicationDate | 2013-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2623489-A1 |
| titleOfInvention | Method for producing ditrimethylolpropane |
| abstract | The present invention provides a method for producing ditrimethylolpropane which is characterized by the following (1) and (2): (1) a distillation still residue separated from purified trimethylolpropane is subjected to re-distillation under specific conditions to obtain a ditrimethylolpropane-containing solution having given contents of bis-TMP and tri-TMP; and (2) when subjecting the ditrimethylolpropane-containing solution to crystallization with an organic solvent, the crystallization is initiated under pressure at a temperature exceeding a boiling point of the organic solvent as measured under normal pressures, and the resulting crystallization product solution is cooled at a temperature drop rate of 2°C/min or less. According to the above method, it is possible to produce a high-purity ditrimethylolpropane from a distillation still residue obtained upon production of trimethylolpropane in a simple, industrially useful manner. |
| priorityDate | 2010-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 84.