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:
Apr. 21, 1998
Filed:
Nov. 26, 1996
David Robert Bryant, South Charleston, WV (US);
Tak Wai Leung, Houston, TX (US);
Ernst Billig, Huntington, WV (US);
Thomas Carl Eisenschmid, Cross Lanes, WV (US);
James Clair Nicholson, Saint Albans, WV (US);
Union Carbide Chemicals & Plastics Technology Corporation, Danbury, CT (US);
Abstract
This invention relates to a process for separating one or more phosphorus acidic compounds from a hydroformylation reaction product fluid containing said one or more phosphorus acidic compounds, a metal-organophosphite ligand complex catalyst and optionally free organophosphite ligand which process comprises treating said hydroformylation reaction product fluid with an aqueous buffer solution sufficient to neutralize and remove at least some amount of said one or more phosphorus acidic compounds from said hydroformylation reaction product fluid.