http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-2142779-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G73-0688 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D519-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D498-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D498-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G73-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D519-00 |
| filingDate | 1995-02-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a8d3db5d76b9cbf848f8f94a030dac49 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_582180071ced936da8b58e3f821729ee http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2a66dcaeb24543dd59d2cc9cc3d1679c |
| publicationDate | 1995-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-2142779-A1 |
| titleOfInvention | Process for the preparation of polyalkyl-1-oxa- diazaspirodecane compounds |
| abstract | The invention relates to a process for the preparation of polyalkyl-1-oxa-diazaspirodecane compounds, which can be used as highly active light stabilizers for polymers. The action is carried out in a solvent mixture of at least one alcohol and if appropriate an inert organic solvent in the presence of solid alkali metal hydroxide or a corresponding amount of a mixture of solid alkali metal hydroxide and water as the sole catalyst. The process offers the advantage that, by using a solvent mixture and dispensing with a phase transfer catalyst, a higher rate of reaction and therefore higher product quality with the same yield are achieved. By dispensing with a phase transfer catalyst, which remains in the waste water and must be disposed of expensively, and by the reusability of the solvent mixture, the process is more environment-friendly and more economical than processes known to date. |
| priorityDate | 1994-02-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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