Pesquisa nas coleções internacionais e nacionais de patentes

2. (WO2015177081) PROCESS FOR PRODUCING POROUS ALGINATE-BASED AEROGELS

Pub. No.:    WO/2015/177081    International Application No.:    PCT/EP2015/060872
Publication Date: Fri Nov 27 00:59:59 CET 2015 International Filing Date: Tue May 19 01:59:59 CEST 2015
IPC: C08J 9/22
Applicants: BASF SE
Inventors: FRICKE, Marc
WEINRICH, Dirk
LÖLSBERG, Wibke
SUBRAHMANYAM, Raman
SMIRNOVA, Irina
GURIKOV, Pavel
Title: PROCESS FOR PRODUCING POROUS ALGINATE-BASED AEROGELS
Abstract:
The present invention relates to a process for preparing a porous material, at least comprising the steps of providing a mixture (I) comprising a water soluble polysaccharide, at least one compound suitable to react as cross-linker for the polysaccharide or to release a cross-linker for the polysaccharide, and water, and preparing a gel (A) comprising exposing mixture (I) to carbon dioxide at a pressure in the range of from 20 to 100 bar for a time sufficient to form a gel (A), and depressurizing the gel (A). Gel (A) subsequently is exposed to a water miscible solvent (L) to obtain a gel (B), which is dried. The invention further relates to the porous materials which can be obtained in this way and the use of the porous materials as thermal insulation material, for cosmetic applications, for biomedical applications or for pharmaceutical applications.