http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H03148224-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0d6256baf554e46784d8daa478a2ddc6 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-50 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61P31-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-495 |
| filingDate | 1989-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2583b68b43d8629e25ba3212f69ccf22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e4c5168d87a102829952d46647147a0f http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_94bcac30f9fb148cd00aa8b5c313f9ba |
| publicationDate | 1991-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H03148224-A |
| titleOfInvention | Pyridonecarboxylic acid-containing spherical particle and microcapsule containing same substance as core substance |
| abstract | PURPOSE: To obtain microcapsules efficiently in the same system by forming pyridonecarboxylic acid-containing spherical particles from a suspension using a combination of specific solvents and then adding a solution of film-forming substance. n CONSTITUTION: (A) A pyridonecarboxylic acid and (B) a hydrophilic substance are suspended in a mixed solvent of a solvent (e.g. n-hexane, cyclohexane or petroleum ether) which is a poor solvent to the component A, the component B and (C) a film- forming substance and does not have compatibility with water and a solvent (e.g. acetone, ethanol or isopropanol) which is a poor solvent to the component A and the component B and a good solvent to the component C and has good compatibility with water and blended with a good solvent (e.g. ammonia water) to both the component A and the component B or water to produce pyridonecarboxylic acid-containing spherical particles. The particles, without being taken out, are dissolved in a water immiscible solvent (e.g. dichloromethane or chloroform) which is a poor solvent both to the component A and the component B and a good solvent to the component C and mixed with the film-forming substance to give microcapsules. n COPYRIGHT: (C)1991,JPO&Japio |
| priorityDate | 1989-11-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.