ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,667, issued on June 30, was assigned to Wacker Chemie AG (Munich).
"Method for producing alkyl silicone resins" was invented by Volker Stanjek (Ampfing, Germany), Dominik Jantke (Burghausen, Germany) and Georg Lossel (Emmerting, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A process for producing alkyl silicone resins (A) containing at least 80 wt % of units of the general formula (I),is provided. Alkylalkoxysilane (A1) of the general formula (II),is mixed in a first reaction step (R1), alternatively, with a pure acid (S) having pKa of not more than 5, with an at least 5 wt % aqueous solution of an acid (S) having a pKa of not more than 5 ...