http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109503395-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C215-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C213-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C213-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C215-40 |
| filingDate | 2018-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109503395-B |
| titleOfInvention | Stable choline solution and preparation method thereof |
| abstract | The invention relates to a stable choline solution and a preparation method thereof, belonging to the technical field of chemical synthesis. The stable choline solution contains choline hydroxide, water and choline carbonate, does not contain metal ions, has stable properties, and is an excellent non-metal strong base for cleaning a circuit board. The preparation method comprises the steps of firstly adding trimethylamine into water, uniformly stirring, introducing a certain amount of carbon dioxide, and stirring while adding to obtain a solution containing trimethyl ammonium carbonate; adding ethylene oxide into the solution, cooling and filtering to obtain the stable choline solution. The preparation method does not use toxic and harmful substances, avoids the emission of Volatile Organic Compounds (VOC) in the production process, does not use catalysts, and has mild reaction conditions. The choline carbonate is used as a stabilizer, so that the side reaction is obviously eliminated, other substances are not introduced, the production process is stable and safe, and the choline carbonate has wide application value in the fields of circuit board cleaning agents, material preparation, electrochemistry, organic synthesis and the like. |
| priorityDate | 2018-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.