http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CS-200467-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3e9445e5e3626f36e932c6451a928250 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D211-74 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D211-74 |
| filingDate | 1974-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e4e197772dc92fc520657f80fa24c3c3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dda13311e0543ba39646ad5db8b6a9b5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_42782f806875a746ec35b7136b06b571 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3690c21c655c5329fef36122e27b56c0 |
| publicationDate | 1980-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CS-200467-B2 |
| titleOfInvention | Process for preparing 2,2,6,6-tetramethyl-4-oxopiperidine |
| abstract | 1461701 Triacetoneamine CIBA-GEIGY AG 21 June 1974 [29 June 1973 19 April 1974 22 May 1974] 27652/74 Heading C2C 2,2,6,6, - Tetramethyl - 4 - oxopiperidine (triacetonamine) is prepared by heating 2,2,4,4,6- pentamethyl - 2,3,4,5 - tetrahydropyrimidine (acetonine) or its hydrate in the absence of an acid catalyst and optionally in the presence of an organic solvent, either (a) without water or with a less than equivalent amount of water relative to the acetonine, in the presence of acetonine and/or diacetone alcohol and/or triacetonediamine and/or an acid condensation product of acetone (e.g. phorone or mesityl oxide) or (b) with at least an equivalent amount of water relative to the acetonine or (c) by heating the hydrate, in the absence of water or with less than the equivalent amount of water relative to the acetonine, in the presence of an organic solvent. Suitable solvents are hydrocarbons, chlorinated hydrocarbons, ethers, nitriles, aprotic polar solvents and alcohols. Triacetoneamine may be isolated as its hydrate or salt. |
| priorityDate | 1973-06-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.