ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,220, issued on Dec. 2, was assigned to Evonik Operations GmbH (Essen, Germany).
"Method for the purification of ethylene cyanohydrin" was invented by Sebastian Bestgen (Eschborn, Germany), Gunther Graff (Bensheim, Germany), Maik Caspari (Alsbach-Haehnlein, Germany), Thorben Schutz (Alsbach-Haehnlein, Germany) and Harald Trauthwein (Aschaffenburg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A process for purifying ethylene cyanohydrin involves incubating an industrial grade ethylene cyanohydrin product with at least one titanium(IV)alkoxide. Ethylene cyanohydrin products with purities of less than99% contain less than 0.05% of ethylene glyc...