US Patent 9605427 Process for manufacturing xerogels

The present invention is related to a process for manufacturing xerogels optionally containing a fibrous reinforcement material, to an insulating, self-supporting single-layer composite panel of thickness between 30 mm and 70 mm of xerogel comprising a fibrous reinforcement material comprising a nonwoven fibrous batting obtainable by this process and to the use thereof for the manufacture of building materials and thermal insulations.