http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003012593-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6e529171204388099b9ed1a0df62111c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-82 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-81 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C47-544 |
| filingDate | 2002-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_496c104305b7904f5b699fd7d17f2324 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b3fdc6f293d8cb79feb177396459e32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e054bfe4566a1c8e79c0e32d2b0f597b |
| publicationDate | 2003-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2003012593-A |
| titleOfInvention | Improved method for purifying and formulating o-phthalaldehyde |
| abstract | (57) [Summary] (Problem corrected) [Problem] Stabilization that can purify crude o-phthalaldehyde (OPA) easily, safely and substantially quantitatively, and does not clump even after several years Finding a way that can be shaped. SOLUTION: An improved method for purifying and formulating o-phthalaldehyde, the crude OP obtained by cleaving the acetal of OPA by acid hydrolysis. A is adjusted to a pH of 1 to 8, optionally by addition of a basic aqueous solution, and, after phase separation has taken place, using a thin-layer evaporator at 100 mbar to atmospheric pressure and room temperature to 180 Under a very short thermal stress of less than 1 minute at a temperature of .degree. C., water is distilled off from the phase containing the aldehyde and a pressure of from 0.5 to 50 mbar and a pressure of from 80 to 50 mbar using a thin-layer evaporator. Under a very short thermal stress of less than 1 minute at a jacket temperature of 180 ° C., OPA is withdrawn from the top of the remaining distillation bottoms and the resulting OPA melt is Pelletize at atmospheric pressure and a temperature of 60-80 ° C. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011528331-A |
| priorityDate | 2001-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.