The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2013
Filed:
Jan. 09, 2009
Michael L. Tulchinsky, Midland, MI (US);
Anthony G. Abatjoglou, Charleston, WV (US);
Michael L. Tulchinsky, Midland, MI (US);
Anthony G. Abatjoglou, Charleston, WV (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A compound comprising a sulfonated triorganophosphine of formula RRPR[SOM)], wherein Rand Rare selected individually from alkyl, aralkyl, and alicyclic groups; wherein Rrepresents a branched divalent or polyvalent, alkylene or alicyclic radical that is bonded to the phosphorus atom and to one or more sulfonate substituents, and further wherein Rdoes not contain any aryl moieties; M represents a monovalent cation; and n is an integer representing a total number of sulfonated substituents. The compound is useful as a ligand in transition metal-ligand complex catalysts that are capable of catalyzing the hydroformylation of an olefinically-unsaturated compound with carbon monoxide and hydrogen to form one or more corresponding aldehyde products. The ligand is incapable of alkyl-aryl exchange, thereby leading to reduced ligand usage and improving ligand and transition metal, e.g., rhodium, recovery and recycling, as compared with prior art ligands.