US Patent Issued to PPG Industries Ohio on July 15 for "Method of preparing low haze polymer compositions for use in high refractive index optical materials" (Pennsylvania, Florida, Massachusetts Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,016, issued on July 15, was assigned to PPG Industries Ohio Inc. (Cleveland).

"Method of preparing low haze polymer compositions for use in high refractive index optical materials" was invented by Barry R. Havens (Pensacola, Fla.), Darrin R. Dabideen (Pittsburgh), Matthew S. Luchansky (Wexford, Pa.) and Nigel D. Kidder-Wolff (Somerville, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of preparing a low bubbling and low yellowing, high refractive index polyurethane or polythiourethane is provided. A method of evaluating an aromatic polyiso(thio)cyanate material, such as an aromatic diisocyanate, e.g., m-xylylene cyanate, is provided. T...