Basf Se Corporation

Gimmy Alex Fernandez Ramirez

Motonori Yamamoto

Harald Keller

Marc Fricke

Alexander Wissemeier

Gabriel Skupin

Hermann Seyffer

Dirk Weinrich

Wibke Loelsberg

Michael Seufert

Wolfgang Weigelt

Pavel Gurikov

Irina Smirnova

Raman Subrahmanyam

Liqun Ren

Alexandra Wiedemann

Jorge Sanz-Gomez

Ilka Selmer

Volker Vogelsang

Alberto Bueno Morales

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.

Process for preparing a porous material

The present invention relates to a process for producing aqueous dispersions of thermoplastic polymers which have a plurality of ester groups and/or carbonate groups in the main polymer chain and which have an acid number of less than 5 mg KOH/g, in particular at most 3 mg KOH/g, and which have a zero-shear viscosity &#x3b7;(180&#xb0; C.) of at least 60 Pa&#xb7;s at 180&#xb0; C. The invention also relates to the polymer dispersions obtainable by said process, and to the use thereof.

Process for producing aqueous dispersions of thermoplastic polyesters

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Ludwigshafen, Germany

Gimmy Alex Fernandez Ramirez