EP 1094792 A1 20010502 - MATERIALS AND METHODS RELATING TO ENCAPSULATION
Title (en)
MATERIALS AND METHODS RELATING TO ENCAPSULATION
Title (de)
EINKAPSELUNGSMATERIALIEN UND -VERFAHREN
Title (fr)
MATERIAUX ET PROCEDES D'ENCAPSULATION
Publication
Application
Priority
- GB 9902159 W 19990706
- GB 9814619 A 19980706
Abstract (en)
[origin: WO0001373A1] A method for encapsulating a core material within a capsule having a permeable or semipermeable membrane is disclosed using a complex formation reaction between oppositely charged polymers, wherein one of the polymers is an oligosaccharide such as chitosan and the reaction is carried out at a pH between about 6.6. and 7.5. The method overcomes the poor solubility of such high molecular weight polysaccharides at neutral and alkaline pH, providing capsules having useful strength and permeability.
IPC 1-7
IPC 8 full level
A61K 9/50 (2006.01); A61K 35/12 (2015.01)
CPC (source: EP)
A61K 9/5036 (2013.01); A61K 9/5089 (2013.01); A61K 2035/128 (2013.01)
Citation (search report)
See references of WO 0001373A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0001373 A1 20000113; AU 4636699 A 20000124; EP 1094792 A1 20010502; GB 9814619 D0 19980902
DOCDB simple family (application)
GB 9902159 W 19990706; AU 4636699 A 19990706; EP 99929581 A 19990706; GB 9814619 A 19980706