( July 31, 2025, 11:49 AM EDT) -- CINCINNATI — Citing different grounds, a Sixth Circuit U.S. Court of Appeals panel ruled that a federal judge in Kentucky was correct when she affirmed summary judgment to Westlake Vinyls Inc. and denied summary judgment to global material solutions company Avient Corp. in the latter company’s second lawsuit challenging the terms of a settlement agreement for allocation of cleanup costs at a Superfund site....