http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103408472-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3cce30a5cea77a562682658ca3617c1a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-04 |
| filingDate | 2013-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a3060d9fa124ac4d3e4672c979048904 |
| publicationDate | 2013-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103408472-A |
| titleOfInvention | Preparation method of ion pair chromatographic reagent sodium n-undecyl sulfonate |
| abstract | The invention relates to a preparation method of an ion pair chromatographic reagent sodium n-undecyl sulfonate. The method comprises the following steps: sequentially adding anhydrous sodium sulfite, water, 1-bromoundecane and tetrapropylammonium bromide into a reaction container provided with a cooling reflux device and a mechanical agitation device; sulfonating for 16-24 hours; then, evaporating moisture in a mixture after sulfonation reaction in a decompression condition; crushing dried residual solids and packaging the solids in a Soxhlet extractor; extracting by absolute ethyl alcohol to obtain a product as a coarse product; then, recrystallizing the coarse product by absolute ethyl alcohol; filtering twice and purifying to obtain a pure product; and finally, drying for 2-4 hours to obtain a finished product. According to the preparation method, tetrapropylammonium bromide is used as a catalyst in a process of sulfonation reaction on sodium sulfite and 1-bromoundecane, so that the activity of 1-bromoundecane is enhanced, the sulfonation reaction can be smoothly performed, and meanwhile, generation of byproducts is reduced, and the reaction time is remarkably shortened. |
| priorityDate | 2013-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.