http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5618963-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_79751aeaa9923745648e5ae7d9c35782 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-4056 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-40 |
| filingDate | 1995-06-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1997-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_78dd55a2f8d6a9486585e9be0842e143 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6efa10fd851248537758e420a6add7a0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f79769e0b44bae1a7a101a4a2c8915aa |
| publicationDate | 1997-04-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5618963-A |
| titleOfInvention | Process for the preparation of sterically hindered hydroxybenzylphosphonates |
| abstract | A process is described for the preparation of hydroxybenzylphosphonates of the formula I ##STR1## which involves A) reacting a phenol of the formula II ##STR2## with an amine of the formula III ##STR3## formaldehyde or paraformaldehyde and a protonic acid H n A to give a salt of the formula IV ##STR4## B) distilling off the water of reaction which forms, and C) reacting the reaction mixture, or the salt IV isolated therefrom, with a trialkyl phosphite of the formula ##STR5## in which H n A is an organic or inorganic acid having n protons, n n is 1, 2, 3 or 4, n R 1 and R 2 independently of one another are C 1 -C 12 alkyl or C 5 -C 7 cycloalkyl, n R 3 and R 4 independently of one another are C 1 -C 12 alkyl or form, together with the nitrogen atom attached to them, a piperidyl or morpholinyl radical, and R 5 , R 6 and R 7 independently of one another are C 1 -C 4 alkyl; and the compounds of the formula I are suitable, for example, as processing stabilizers for plastics. |
| priorityDate | 1994-06-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 168.