ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,231, issued on Nov. 18.
"Hydrophobizing agent for mineral materials" was invented by Detlef Ballschuh (Berlin), Horst Seibt (Berlin), Andreas Gerdes (Karlsruhe, Germany), Julia Sussmuth (Ettlingen, Germany) and Patrick Schaffel (Erkrath, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein is a hydrophobizing agent for mineral materials, including: a polyion complex (i) including at least one polycation (i.1) and at least one polyanion (i.2), where the molar ratio of polycation:polyanion in the polyion complex is less than=1; and a silicone compound composition (ii). Also described herein are a process for producing the hydrophobi...