http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2785686-A2
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_3aaba3d2401b7308349092af6f0b73dc 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_f2b85b8ccbe5f08131c11a3cde5b57db http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ce990212c3a666822a12c654b9ee6e5e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_71cc3cb99a11b35f43d4d2cd3c8e1a60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1710affba2c969bd0fab8baf551b1c98 |
| publicationDate | 2014-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2785686-A2 |
| titleOfInvention | Method for producing and purifying salts of acrylamido-2-methylpropane sulfonic acid |
| abstract | The invention relates to a method for producing salts of acrylamido-2-methylpropane sulfonic acid (A), comprising the following steps: a) producing a solution of a contaminated salt of acrylamido-2-methylpropane sulfonic acid (A) in a water-free, organic solvent (L) using at least one basic component (B) selected from the group comprising alkali metal oxides, alkaline-earth metal oxides, alkali hydroxides, alkaline-earth metal hydroxides, and amines of general formula (I) NRa Rb Rc (I), wherein the groups Ra, Rb, and Rc mean the following independently of each other: hydrogen, C1-C4 alkyl, hydroxy C1-C4 alkyl, or C1-C4 alkoxy, wherein the molar ratio of compound (A) to basic component (B) is preferably 1:1 to 1:3; b) optionally partially removing the organic solvent (L) at a pressure in the range of 0.001 to 2 bar (abs); c) recovering the dissolved salt of compound (A) by crystallization or precipitation, by changing the temperature and/or the pressure and/or the concentration of the salt in the solution; d) optionally drying the purified salt of acrylamido-2-methylpropane sulfonic acid (A). Said method according to the invention leads to salts that are poor in byproduct and especially suitable for 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: 73.