US Patent Issued to MITSUI CHEMICALS on Sept. 29 for "Polymerizable composition for optical material, optical material, and use thereof" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,336, issued on Sept. 29, was assigned to MITSUI CHEMICALS INC. (Tokyo).

"Polymerizable composition for optical material, optical material, and use thereof" was invented by Masaru Kawaguchi (Mizuma-gun, Japan) and Shinsuke Ito (Omuta, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A polymerizable composition for an optical material of the present disclosure includes (A) an isocyanate compound, (B) at least one active hydrogen compound selected from the group consisting of a polythiol compound having two or more mercapto groups, a hydroxythiol compound having one or more mercapto groups and one or more hydroxyl groups, a polyol compound having ...