Patent · US Active

Methods to rejuvenate a deactivated hydroformylation catalyst solution

US11229900B2 · kind B2 · utility

1Cited by
43References
8Claims
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Key dates

Filing dateNov 6, 2017
Grant dateJan 25, 2022
Priority date—
Expiry dateJan 20, 2039

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02P20/582
  • WIPO fieldChemical engineering
  • WIPO sectorChemistry

Abstract

Disclosed herein are methods to rejuvenate a deactivated hydroformylation catalyst solution wherein the solution comprises rhodium, polyphosphoramidite ligands, and polyphosphoramidite ligand degradation products. In some embodiments, such methods comprise adding a peroxide to the deactivated hydroformylation catalyst solution.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.