| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3512253260eaeb1afb95ec5ccc5f5ca0 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-286
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K9-1635
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J9-28 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61Q5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J9-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K47-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61J-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J13-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01N25-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K47-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K9-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K8-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K8-11 |
| filingDate |
1987-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1991-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25da98a09c8c2c4c6cdc7ead5f9ad325 |
| publicationDate |
1991-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-3774266-D1 |
| titleOfInvention |
POROESE POLYMER BEADS FOR DELIVERING ACTIVE SUBSTANCES. |
| abstract |
A compsn. for delivering an active ingredient (I) by controlled time release comprises a porous polymeric bead having a network of pores, the (I) being held within the network of pores, the network of pores being substantially non-collapsible upon removal of the (I). Pref. the bead is copolymerised from a comonomer pair chosen from vinyl stearate/divinyl benzene, methyl methacrylate/ethylene glycol dimethylmethacrylate or styrene/divinyl benzene. The (I) is pref. a porogen such as a mineral oil and the (I) pref. makes up 5-60% of the total wt. of the compsn. The delivery vehicle pref. has a dia. of 10-100 microns and a calculated cross linking density in excess of ca. 10%. |
| priorityDate |
1985-10-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |