| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_90f750ddb13b271a7582d6909bcdaa0f |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D17-0039
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-0015
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11D3-505
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J13-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J13-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A01N25-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J13-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C11B9-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J13-043 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L5-08 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J3-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L75-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J13-16 |
| filingDate |
2021-02-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b2400592437db49300170ec82b7a2912 |
| publicationDate |
2021-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-3157322-A1 |
| titleOfInvention |
Polyurea capsules cross-linked with chitosan |
| abstract |
An improved method of forming microcapsules of polyurea and chitosan encapsulating a beneficial agent is provided. The process comprises the formation of an aqueous phase comprising the hydrolysis of chitosan in an acid medium at a pH less than or equal to 6.5 for an extended period and the combination with a polyisocyanate. The reaction product of hydrolyzed chitosan and polyisocyanate produces a microcapsule with improved release characteristics, with improved degradation characteristics in the OECD 301 B test method. |
| priorityDate |
2020-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |