http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104460730-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C215-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C213-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G05D21-02 |
| filingDate | 2014-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-08-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104460730-B |
| titleOfInvention | Method of pH control in choline chloride production process |
| abstract | The invention discloses the pH value control method in a kind of choline chloride production process, it is characterised in that comprise the following steps: trimethylamine is generated trimethylamine hydrochloride with hydrochloric acid reaction, control the pH value of trimethylamine hydrochloride between 6.5～6.8；By trimethylamine hydrochloride and reacting ethylene oxide, condensation generates choline chloride, is passed through oxirane or acid trimethylamine hydrochloride residual titration liquid that pH is 2.5-3.0 makes the residual quantity of trimethylamine between 400～600ppm in condensation reaction forward direction choline chloride liquid；Physical concentration obtains choline chloride end-product.The invention have benefit that: method is simple, effective, easily operates, can fundamentally control the pH value in choline chloride production process, thus reach to control the purpose of choline chloride finished product pH value；Decrease oxirane supplies consumption, improve economic benefit；In finished product, the residual quantity of trimethylamine is under control, and improves product quality. |
| priorityDate | 2014-05-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.