Dallas-based HollyFrontier Corp.announced it completed the previously announced acquisition of hydrocarbon chemicals manufacturerSonnebornfor U.S.$655 million last week.Calumet Specialty Products Partners L.P. outlined Phase II of its self-help program, including completion last year of new packaging lines at its facility in Shreveport, Louisiana, and at its Royal Purple lubricant blender/packager subsidiary in Porter, Texas. The company also listed a commercialization project for Biosynthetic Technologies – acquired last year – at Calumets Missouri esters plant as one of its new quick-hit projects targeted for competition during 2019-2021.MFG Chemical, a Dalton, Georgia-based specialty chemical manufacturer in the lubricants market, named Darin Gyomory as chief financial officer.