http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-102490265-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K31-525 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-5042 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K47-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B13-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-2866 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B13-00 |
| filingDate | 2017-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2023-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2023-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-102490265-B1 |
| titleOfInvention | Hypromellose acetate succinate and method for producing the same |
| abstract | Provided are HPMCAS having a controlled solution viscosity when dissolved in a solvent and a method for preparing the same. Specifically, hypromellose having a viscosity of 135 mPa s or less at 20 ° C. of a solution in which 10 parts by mass of hypromellose acetate succinate is dissolved in 100 parts by mass of a mixed solvent of methylene chloride and methanol in a mass ratio of 1: 1. Osacetic acid ester succinic acid esters are provided. In addition, an esterification step of obtaining a reaction solution by adding acetic anhydride and succinic anhydride to a glacial acetic acid solution of hypromellose in the presence of sodium acetate, wherein the succinic anhydride is added twice or more; A method for producing hypromellose acetate succinate is provided, which includes at least a precipitation step of mixing the reaction solution and water to precipitate hypromellose acetate succinate. |
| priorityDate | 2016-11-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 115.