发明名称 |
MATERIALS AND METHODS RELATING TO ENCAPSULATION |
摘要 |
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.
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申请公布号 |
WO0001373(A1) |
申请公布日期 |
2000.01.13 |
申请号 |
WO1999GB02159 |
申请日期 |
1999.07.06 |
申请人 |
ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE;KIDDLE, SIMON;BARTKOWIAK, ARTUR;HUNKELER, DAVID |
发明人 |
BARTKOWIAK, ARTUR;HUNKELER, DAVID |
分类号 |
A61K9/50;A61K35/12;(IPC1-7):A61K9/50;C12N11/00 |
主分类号 |
A61K9/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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