http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20140099461-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8e0bf0928b608797b70bbc2b91c7e52e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-44 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-15 |
| filingDate | 2012-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71cc3cb99a11b35f43d4d2cd3c8e1a60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f2b85b8ccbe5f08131c11a3cde5b57db http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce990212c3a666822a12c654b9ee6e5e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89c379ba7d68bf43df0ea6be34fae9cb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2b1a389ed72bb71401fae5982bc5cf13 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1710affba2c969bd0fab8baf551b1c98 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3aaba3d2401b7308349092af6f0b73dc |
| publicationDate | 2014-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20140099461-A |
| titleOfInvention | Method for producing and purifying salts of acrylamido-2-methylpropane sulfonic acid |
| abstract | The present invention relates to a process for the preparation of a salt of acrylamido-2-methylpropanesulfonic acid (A), comprising the steps of: (A), in an anhydrous organic solvent (L), by using a) at least one basic component (B) selected from the group of alkali metal oxides, alkaline earth metal oxides, alkali metal hydroxides, alkaline earth metal hydroxides and amines of the general formula Methyl propanesulfonic acid (A), comprising the steps of: Wherein the radicals R a , R b and R c are each independently hydrogen, C 1 -C 4 -alkyl, hydroxy-C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy, Here, the molar ratio of the compound (A) to the basic component (B) is preferably from 1: 1 to 1: 3, b) partially removing the organic solvent (L) at a pressure in the range of from 0.001 to 2 bar (abs) c) recovering the dissolved salt of the compound (A) by varying the temperature and / or the pressure and / or the concentration of the salt in the solution by crystallization or precipitation, d) optionally drying a purified salt of acrylamido-2-methylpropanesulfonic acid (A). The process according to the invention leads to salts which are scarce by-products, in particular suitable for the polymerization. |
| priorityDate | 2011-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 57.