ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,315, issued on Sept. 29, was assigned to Albemarle Corp. (Charlotte, N.C.).
"Process and catalysts for hydrogen mediated anionic polymerization of conjugated dienes and liquid polymers thereof" was invented by William J. Layman Jr. (Baton Rouge, La.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to hydrogen mediated anionically polymerized conjugated diene compositions, including homopolymers and copolymers of isoprene and/or butadiene, and processes and compositions for preparing them."
The patent was filed on Sept. 1, 2021, under Application No. 18/043,453.
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