公开(公告)号：US20220185682A1

公开(公告)日：2022-06-16

申请号：US17442406

申请日：2020-03-24

Applicant: BASF SE

Inventor： Raman Subrahmanyam ,  Fynn Missfeldt ,  Pavel Gurikov ,  Irina Smirnova ,  Sohaji Movahhed ,  Wibke Loelsberg ,  Paul Dieringer

IPC: C01B33/158 ,  B01J13/00 ,  B01J20/10 ,  C04B14/06

Abstract: A process for the hydrophobization of a porous silica based compound involves the steps of providing a composition (I) containing a porous silica based compound, treating the composition (I) with a composition (II) containing hexamethyldisiloxane or its hydrolyzed form, and removing the treated silica based compound. The porous silica based compound obtained by the process is useful. A porous silica based compound obtained or obtainable by the process can be used for medical and pharmaceutical applications, as adsorbents, for cosmetic applications, as an additive for food, as a catalyst support, for the preparation of sensors, or for thermal insulation.

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：US11028247B2

公开(公告)日：2021-06-08

申请号：US15978647

申请日：2018-05-14

Applicant: BASF SE

Inventor： Marc Fricke ,  Dirk Weinrich ,  Wibke Loelsberg ,  Raman Subrahmanyam ,  Irina Smirnova ,  Pavel Gurikov

IPC: C08J9/28 ,  C08J9/00 ,  C08J9/12 ,  C08J9/35 ,  C09K5/14

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.

公开(公告)号：US10017621B2

公开(公告)日：2018-07-10

申请号：US15312541

申请日：2015-05-18

Applicant: BASF SE

Inventor： Marc Fricke ,  Dirk Weinrich ,  Wibke Loelsberg ,  Raman Subrahmanyam ,  Irina Smirnova ,  Pavel Gurikov

IPC: C08J9/28 ,  C08J9/35 ,  C08J9/00 ,  C08J9/12 ,  C09K5/14

CPC classification number: C08J9/28 ,  C08J9/0066 ,  C08J9/122 ,  C08J9/35 ,  C08J2201/026 ,  C08J2201/05 ,  C08J2201/0502 ,  C08J2203/06 ,  C08J2205/022 ,  C08J2205/024 ,  C08J2205/026 ,  C08J2205/028 ,  C08J2205/042 ,  C08J2305/04 ,  C08J2483/00 ,  C09K5/14

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.