US Patent Issued to KURARAY on April 22 for "Anionic polymerization process and polymer production method" (Japanese Inventors)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,185, issued on April 22, was assigned to KURARAY Co. LTD. (Kurashiki, Japan).

"Anionic polymerization process and polymer production method" was invented by Moe Kawahara (Tsukuba, Japan) and Tomohiro Ono (Tsukuba, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for anionically polymerizing a (meth)acrylic acid in the presence of a tertiary organoaluminum compound (A), an organolithium compound (B) and at least one kind of a Lewis base (C) in a polymerization system. The tertiary organoaluminum compound (A) includes a tertiary organoaluminum compound (A1) having a chemical structure in which at least two of three unshared electrons of a...