http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108516944-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-05 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-02 |
| filingDate | 2018-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108516944-B |
| titleOfInvention | Preparation method of methane disulfonic acid |
| abstract | The invention discloses a preparation method of methane disulfonic acid, which comprises the following steps: reacting sulfite and dibromomethane in water in the presence of a composite phase transfer catalyst to obtain methane disulfonate, and acidifying to generate methane disulfonic acid; the composite phase transfer catalyst comprises polyethylene glycol and other phase transfer catalysts except the polyethylene glycol, and the other phase transfer catalysts except the polyethylene glycol are one or more of tetramethyl ammonium bromide, tetramethyl ammonium chloride, tetraethyl ammonium bromide, tetraethyl ammonium chloride, tetrabutyl ammonium bromide, tetrabutyl ammonium chloride, benzyl triethyl ammonium chloride, hexadecyl trimethyl ammonium bromide, 18 crown 6, 15 crown 5, cyclodextrin, pyridine and triethylamine; the method can be carried out at lower temperature and normal pressure, is more environment-friendly and energy-saving, and has the advantages of simple and safe operation, ideal yield and the like. |
| priorityDate | 2018-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.