SILICA HYDROGEL COMPOSITE

摘要

This invention relates to a silica hydrogel composite obtainable by mixing silica particles, comprising an encapsulated agent, with a silica sol, wherein obtained hydrogel composite is shear-thinning. The present invention also relates to use of the silica hydrogel composite according to the invention for an injectable, flowing or extrudable formulation. The present invention further relates to a method for preparing the silica hydrogel.

主权项

1. A silica hydrogel composite obtainable by mixing
a) silica particles, comprising an encapsulated agent other than the silica itself and having a maximum diameter of ≦1 000 μm, as such or as a suspension, with b) a silica sol; wherein i) said silica sol has a solid content of ≦5 wt-%, ii) said silica hydrogel composite comprises up to 85 wt-% of said silica particles, and iii) said hydrogel composite is shear-thinning.