公开(公告)号：US11124621B2

公开(公告)日：2021-09-21

申请号：US16493631

申请日：2018-04-13

Applicant: BASF SE

Inventor： Dirk Weinrich ,  Wibke Loelsberg ,  Marc Fricke ,  Gimmy Alex Fernandez Ramirez ,  Volker Vogelsang ,  Alberto Bueno Morales ,  Raman Subrahmanyam ,  Pavel Gurikov ,  Ilka Selmer ,  Irina Smirnova

IPC: C08J9/00 ,  B29C67/20 ,  C08J9/12 ,  C08J9/28 ,  B29K105/00 ,  B29L7/00

Abstract: The present invention is directed to a process for preparing a porous material, at least comprising the steps of providing a gel comprising a solvent (S), wherein the solvent (S) has a volume (V1), pressurizing the gel with carbon dioxide at a temperature and a pressure at which carbon dioxide solubilizes in the solvent (S) forming gas-expanded liquid (EL), wherein the gas-expanded liquid (EL) has a volume (V2) and (V2) is greater than (V1); removing supernatant liquid, and drying the gel. The present invention further is directed to the porous material obtained or obtainable according to the process as such as the use of the porous material according to the invention in particular for medical, biomedical and pharmaceutical applications or for thermal insulation.

公开(公告)号：US20220289928A1

公开(公告)日：2022-09-15

申请号：US17753147

申请日：2020-08-25

Applicant: BASF SE

Inventor： Dirk WEINRICH ,  Volker Vogelsang ,  Rene Thomas Wiegmann ,  Sohaji Movahhed ,  Marc Fricke ,  Torben Kaminsky ,  Maria Thomas ,  Joerg Erbes ,  Wibke Loelsberg

IPC: C08J9/28 ,  B01J13/00

Abstract: A method can be used for manufacturing one or more bodies made of a porous material derived from precursors of the porous material in a sol-gel process. The method involves filling precursors of the porous material into a mold defining the shape of the body, where the precursors include at least two reactive components and a solvent, and forming a gel body. The step is then repeated so as to form several gel bodies. The gel bodies are then removed from the mold after a predetermined time in which the gel bodies are formed from the precursors of the porous material. The gel bodies are arranged adjacent to one another, a spacer is provided between two adjacent gel bodies so as to provide a clearance therebetween, and the solvent is then removed from the gel bodies.