METHOD FOR PRODUCING A FOAMED MATERIAL, COMPOSITION IN THE FORM OF AN EMULSION USED IN SAID METHOD, AND FOAMED MATERIAL THAT CAN BE OBTAINED FROM SAID METHOD

摘要

The invention relates to a method for producing a foamed material, wherein a composition in the form of an emulsion having a matrix-forming component, a surfactant component, and a near-critical or supercritical foaming agent component experiences a pressure reduction. Furthermore, the foaming agent component comprises a hydrophobic co-component, which is soluble in supercritical CO2 at a pressure = 150 bar, insoluble in subcritical CO2 at a pressure = 40 bar, and insoluble in the matrix-forming component and furthermore is present in a fraction from = 3 wt % to = 35 wt % of the foaming agent component. The invention further relates to a composition in the form of an emulsion to be used therein and to a foamed material that can be obtained according to said method.