ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,063, issued on April 22, was assigned to BASF SE.
"Low-pressure hydroformylation of diisobutene" was invented by Jonas Schwaben (Ludwigshafen am Rhein, Germany), Rocco Paciello (Ludwigshafen am Rhein, Germany) and Rainer Papp (Ludwigshafen am Rhein, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydroformylation process for preparing 3,5,5-trimethylhexanal comprising reacting 2,4,4-trimethylpent-2-ene with H2 and CO in a reaction zone in the presence of one or more free organophosphite ligands of the general formula (I) wherein R1, R2, R3, R4 and R5 are each independently H, C1- to C9-alkyl or C1- to C9-alkoxy and R1, R2, R3, R4 and R5 are ...