http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100244572-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7ef01e33058cf740cf2197991be97af1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D211-46 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D211-46 |
| filingDate | 1997-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2000-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41e386b8afbe8f479d47bcdc76d8309e |
| publicationDate | 2000-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-100244572-B1 |
| titleOfInvention | Method for preparing 4-hydroxy-1,2,2,6,6-pentamethylpiperidine |
| abstract | (1) (1) Desired at least one compound selected from the group consisting of 4-hydroxy-2,2,6,6-tetramethylpiperidine, formaldehyde, paraformaldehyde and trioxane. Adding formic acid for reaction, (2) adding base to neutralize the reaction product, (3) neutralizing, separating the aqueous layer and the prepared product, crystallizing and filtering the prepared product to obtain a water concentration of 3% by weight. 4-hydroxy-1,2,2,6,6-pentamethyl, comprising the step of acquiring the following 4-hydroxy-1,2,2,6,6-pentamethylpiperidine crystals; Method for preparing piperidine.n n n EFFECTS According to the present invention, water in the target N-methyl-TAAM can be reduced. Moreover, the water layer after neutralization can be used repeatedly, and waste water can be reduced. |
| priorityDate | 1996-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.