ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,418, issued on Dec. 23, was assigned to OXEA GmbH (Germany).
"Process for the preparation of polycyclic aliphatic dialdehydes" was invented by Dennis Vogelsang (Dulmen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a process for the preparation of polycyclic aliphatic dialdehydes by hydroformylation of polycyclic aliphatic diolefins in the presence of synthesis gas over an organophosphorus ligand modified metal catalyst system having a transition metal of the 8th-10th subgroup, wherein the hydroformylation is carried out by means of a water-soluble diphosphine or triarylphosphine complex catalyst at a pressu...