http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20030029352-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f4a7711656877c108fcffc1b2b52cfc4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B11-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08B3-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08B3-00 |
| filingDate | 2001-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8acb447dce52ec069882b594e83566e3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_341f4bb94bfe46bd03feebe92cfa9e1c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94584508c42cea7c669ec602a1bb2c58 |
| publicationDate | 2003-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20030029352-A |
| titleOfInvention | Preparation method of hydroxypropylmethyl cellulose phthalate |
| abstract | The present invention relates to a method for producing hydroxypropylmethyl cellulose phthalate, and more particularly, low-viscosity hydroxypropylmethyl cellulose by hydrolyzing a medium viscosity hydroxypropylmethyl cellulose in a dry powder at a constant pressure and temperature range under an acid catalyst. After preparing the hydroxypropyl methyl cellulose phthalate by esterification of the low-viscosity hydroxypropylmethyl cellulose in an acetic acid solvent, the final hydroxypropyl using a spraying method using a fluidizing solvent as a post-treatment step By preparing methyl cellulose phthalate, the present invention relates to a method for producing hydroxypropylmethyl cellulose phthalate of high purity, which is easy to remove impurities such as unreacted phthalic acid and improves whiteness as compared with the related art. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20180120634-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100686202-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100461566-B1 |
| priorityDate | 2001-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.