http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110305044-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-32 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-58 |
| filingDate | 2019-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110305044-B |
| titleOfInvention | Method for producing dipropylene glycol isophthalate-5-sodium sulfonate by composite catalysis method with SIPA as raw material |
| abstract | The invention provides a method for producing dipropylene glycol isophthalate-5-sodium sulfonate by using a composite catalytic method with SIPA as a raw material. The yield of the SIPP prepared by the invention is over 98 percent and is 98.12-98.21 percent; the esterification rate is 99.22-99.35%; the purity of SIPP obtained by analysis is 98.02-98.11%; the operation period from the beginning of feeding to the end of cooling the propylene glycol solution of SIPP is 5.7-6.2 h. Compared with the prior SIPP production process of SIPM at home and abroad, the process adopts SIPA to produce SIPP, and the reaction raw materials, the reaction process and the intermediate product propylene glycol monocarboxylate-5-sodium sulfonate are all different from the SIPM synthesis process; meanwhile, the product purity of the process of the invention is over 98%, the yield is over 98%, and the solution is basically free of solids. |
| priorityDate | 2019-06-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 43.