http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110105326-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6b04c80388510b1a676e5c91a2b2baf1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D327-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D327-04 |
| filingDate | 2019-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_08516e2ecf3d4f6d10598630d16f5258 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_219a6dfd9ae0cd71e7ce6b9e025ffb65 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_60db1b274dafc63193814f782bf7ab22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4db53eb6a08b4161cd6f595384e09c88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd3e6503700df606b3c0f12ec40d54f8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_753a372bb8ce4460b98f9d6b9f78092e |
| publicationDate | 2019-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110105326-A |
| titleOfInvention | A kind of preparation method of 1,3-propane sultone |
| abstract | The present invention relates to a preparation method of 1,3-propane sultone, comprising the following steps: S1. Using 3-chloropropanol and sodium sulfite as raw materials, using water as a solvent, after fully mixing in a reaction vessel, controlling The temperature is at 25-120°C, react for 4-48h, then dehydrate and concentrate under reduced pressure, add concentrated hydrochloric acid to the concentrated solution for acidification, then control the temperature at 0-80°C and stir for 1-24h, then filter, and concentrate the filtrate to obtain a mixture containing The concentrated solution of 3-hydroxypropanesulfonic acid; S2. control S1 concentrated solution temperature at 40-110 ℃, underpressure distillation, make the 3-hydroxypropanesulfonic acid in the concentrated solution dehydration closed loop, obtain containing 1,3-propanesulfonic acid The crude product of lactone; S3. The crude product containing 1,3-propane sultone prepared by S2 is subjected to rectification treatment, to obtain final product. The beneficial effects are as follows: the process route is short, the three wastes are less generated, the post-processing is simple, the total yield is as high as 90% or more, and the product purity can reach more than 99.9%. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114805288-A |
| priorityDate | 2019-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 36.