US Patent Issued to Evonik Operations on April 14 for "Method for producing polysulphane-silanes by means of phase transfer catalysis" (German, Belgian Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,735, issued on April 14, was assigned to Evonik Operations GmbH (Essen, Germany).

"Method for producing polysulphane-silanes by means of phase transfer catalysis" was invented by Julia Hermeke (Gerlingen, Germany), Helmut Droge (Bornheim, Germany), Evgenij Lyagin (Hanau, Germany), Horst Mertsch (Rheinfelden, Germany), Elisabeth Bauer (Kleines Wiesental, Germany) and Gert Smans (Mortsel, Belgium).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing polysulphane-silanes of formula (I): (R1)3-mR2mSi-R3-Sx-R3-SiR2m(OR1)3-m by reacting at least one silane of formula (II): (R1)3-mR2mSi-R3-Hal with M(SH)y and/or MzS and sulphur, in the pre...