US Patent Issued to Dow Silicones on Sept. 23 for "Polycondensation preparation of polysiloxanes using concurrent acid/base catalysts" (Michigan Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,353, issued on Sept. 23, was assigned to Dow Silicones Corp. (Midland, Mich.).

"Polycondensation preparation of polysiloxanes using concurrent acid/base catalysts" was invented by Ronen Weingarten (Midland, Mich.) and Gary Wieber (Wayland, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for preparing polysiloxanes is a two-part polycondensation of alkoxy silanes and/or alkoxy siloxanes the process comprising the following steps: (a) hydrolysis of the alkoxy silanes and/or alkoxy siloxanes to hydroxyl-functional silanes and/or hydroxyl-functional siloxanes; and (b) condensation of the hydroxyl-functional silanes and/or hydroxyl-functi...