http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H03243637-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_cebc9740ef706cde29e885504f274ffa |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-70 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28 |
| filingDate | 1990-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0e42ec97731edec1b1c218322d0194cf http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5617b27a042fc41aa39627fefe55a66e |
| publicationDate | 1991-10-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H03243637-A |
| titleOfInvention | Treatment for making polymer fine particle porous |
| abstract | PURPOSE: To simply obtain porous fine particles of polymer capable of maintaining a drug such as percutaneous cataplasm, aroma or fertilizer for a long period of time by treating polymer fine particles with an organic compound to swell the fine particles and then separating the organic compound from the fine particles. n CONSTITUTION: 100 pts.wt. polymer fine particles (preferably methyl methacrylate-based polymer, styrene-based polymer or styrene-methyl methacrylate copolymer) havign 0.5-500μm diameter is treated at-20 to 120°C with 10-1,000 pts.wt. organic compound [preferably α,β-unsaturated fatty acid, hydroxyalkyl (meth) acrylate, styrene, alcohols, ketones, paraffin-based hydrocarbons or aromatic hydrocarbos] having properties of swelling the polymer fine particles and the organic compound is separated from the fine particles to give the objective porous fine particles. n COPYRIGHT: (C)1991,JPO&Japio |
| priorityDate | 1990-02-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.