| 摘要 |
The present invention relates to novel materials, particularly biomaterials, in form of a precipitate, comprising at least an anionic polymeric component which is as such soluble in water and an amphiphilic ammonium-type component , which precipitate is obtainable by a process including the following steps: contacting the anionic polymeric component and an cylcodextrin component in an aqueous medium, and adding to the mixture obtained in step 1 said amphiphili c ammonium-type component, wherein said components are present in amounts effective to form said precipitate, and preferably to corresponding precipitates additionally comprising said cycxlodextrin component. Both type s of precipitates may optionally comprise one or more further components. The precipitates are particularly useful as controlled-release depot formulation s suitable for long-lasting delivery of said further components. The further components incorporated into the precipitates can be pharmaceutical compound s, pesticides, agrochemicals, colorants, diagnostics, enzymes, foodstuffs etc.< /SDOAB> |
