Process for producing flame-retardant porous materials based on polyurea

Abstract

The present invention relates to a process for producing flame-retardant porous materials comprising the following steps: (a) reacting at least one polyfunctional isocyanate (a1) and at least one polyfunctional aromatic amine (a2) in an organic solvent optionally in the presence of water as component (a3) and optionally in the presence of at least one catalyst (a5); and then (b) removing the organic solvent to obtain the organic porous material, where step (a) is carried out in the presence of at least one organic flame retardant as component (a4), where this flame retardant is soluble in the solvent. The invention further relates to the porous materials thus obtainable, and also to the use of the porous materials for thermal insulation.

Dependencies are inferred from the claim text.