| abstract |
The present invention is directed to a process for preparing a porous material, at least comprising the steps of providing a mixture (I) comprising a hydrogel (HG) of a water soluble polysaccharide, exposing the gel (HG) to a water miscible solvent (L1) to obtain a gel (A), exposing the gel (A) obtained in step b) to mixture (II) comprising a polyisocyanate to obtain a gel (B), and drying of the gel (B) obtained in step c). The present invention is further directed to the porous material, which is obtained or obtainable by the process according to the present invention as well as the use of porous materials according to the invention for cosmetic applications, for biomedical applications or for medical and pharmaceutical applications, as adsorbents, for personal health care products, as additive for food, as catalyst support, for the preparation of sensors, or for thermal or acoustic insulation. |