| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_424db9d56b06a23aed410fcf5df652f3 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2203-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2205-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2205-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2203-02 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B15-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K47-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L1-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L1-286 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L1-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B13-00 |
| filingDate |
2021-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_daaaa55079928b292ee22f895d1ca619
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c2725c6542d1157c84728aa042e6662
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ecbb79d4936b4a1a8922feac63ea6a93
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_75b236796a80149a6bb58204b6ff12f9 |
| publicationDate |
2022-04-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-3978535-A1 |
| titleOfInvention |
Hydroxypropyl methyl cellulose phthalate, method for producing the same, and composition for hot-melt extrusion |
| abstract |
There is provided a method for efficiently produce hydroxypropyl methyl cellulose phthalate (HPMCP) having excellent flowability, where acetic acid in a reaction product mixture subjected to a wash and recovery step can be reduced. More specifically, there is provided a method for producing HPMCP including an esterification step of esterifying hydroxypropyl methyl cellulose (HPMC) with phthalic anhydride in acetic acid as a solvent to obtain a reaction product solution containing HPMCP; a water addition step of adding water to the reaction product solution to obtain a water-added reaction product solution; an acetic acid removal step of removing at least a portion of the acetic acid from the water-added reaction product solution to obtain a mixture having an acetic acid content reduced; and a wash and recovery step of washing the mixture and recovering the HPMCP. |
| priorityDate |
2020-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |