http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6486358-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7c3abccac7bae9414dc8ce09b2d192dc |
| 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/C07C47-544 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 |
| filingDate | 2002-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2002-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41fcfe2ef93aed0027d15015e9e85c70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_49c1ad6bc5c4784ae72203f8dee890ef http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ff5b60af0909236c1d7e6c32317cce8 |
| publicationDate | 2002-11-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-6486358-B1 |
| titleOfInvention | Process for the purification and formulation of o-phthalaldehyde |
| abstract | Improved process for the purification and formulation of o-phthalaldehyde in which crude o-phthalaldehyde, obtained by cleavage of an acetal of o-phthalaldehyde by means of acidic hydrolysis, is, optionally by adding an aqueous basic solution, adjusted to a pH of from 1 to 8, and then, after phase separation has taken place, water is distilled off from the phase which contains the aldehyde with very short thermal stress of less than 1 minute at a pressure of between 100 mbar and atmospheric pressure and a temperature of from room temperature to 180° C. on a thin-layer overhead evaporator and o-phthalaldehyde is then stripped off from the distillation bottom which remains with very short thermal stress of less than 1 minute at a pressure of from 0.5 to 50 mbar and a jacket temperature of from 80 to 80° C. via a thin-layer evaporator and the resulting o-phthalaldehyde melt is pelleted at atmospheric pressure and a temperature of from 60 to 80 ° C., giving pale yellow o-phthalaldehyde in high purity and storage-stable form. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006199870-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7402708-B2 |
| 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: 40.