http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10669231-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_824448eec22bc414e8c5bd3143473df1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-15 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C309-21 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-15 |
| filingDate | 2018-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0b54d119da65c4a4bf4c2d58208f794d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c56a61311d4201b4364080286ea18ee8 |
| publicationDate | 2020-06-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-10669231-B2 |
| titleOfInvention | Method for producing 2-acrylamido-2-methylpropane sulphonic acid |
| abstract | The present invention relates to a production process for 2-acrylamido-2-methylpropane sulfonic acid including at least the following successive steps:n 1) mixing of acrylonitrile with at least one compound contributing SO 3 at a temperature included between −80 and 30° C.; 2) placing in contact and mixing isobutylene and the sulfonating mixture with a molar ratio of SO 3 to isobutylene included between 0.2:1 and 2:1 and a molar ratio of acrylonitrile to isobutylene included between 3:1 and 60:1 at a temperature included between −40 and 100° C.; 3) solid/liquid separation of the reaction mixture and isolation of the solid particles in the form of a composition 1; 4) mixing composition 1 at the end of step 3) with an aqueous solution A included at a temperature comprised between −20 and 70° C. in order to obtain a suspension 1 of 2-acrylamido-2-methylpropane sulfonic acid crystals; 5) solid/liquid separation of the suspension 1 and isolation of the crystals in form of composition 2. |
| priorityDate | 2017-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 81.