synthesis method for making an isocyanate-based organic xerogel, and use of isocyanate-based organic xerogel

摘要

A synthetic method for making an isocyanate-based organic xerogel having a low density (i.e. 400 kg / m3) and a small pore size (150 nm) in combination with a specific surface area 100 m2 is described. / g. The synthesis method prevents or reduces gel contraction during the solvent removal step is characterized in that the organic solvent used to synthesize the isocyanate-based organic xerogel is replaced with water such that during the solvent removal step only water needs to be removed to dry the porous network and to obtain isocyanate-based organic xerogel.