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# United States Patent [19J 

# Bryant et al. 

# [54) HYDROFORMYLATION PROCESSES 

[75) Inventors: David Robert Bryant. South Charleston; James Clair Nicholson, South Charleston, both of W. Va. 

[73] Assignee: Union Carbide Chemicals & Plastics Technology Corporation, Danbury. Conn. 

[ *] Notice: The term of this patent shall not extend beyond the expiration date of Pat. No. 5,741.944. 

[21) Appl. No.: 753,504 

[22) Filed: Nov. 26, 1996 

[60] Provisional application No. 60/008,289, Dec. 6, 1995, pro› visional application No. (J()/008,763, Dec. 6, 1995, provi› sional application No. 60/008,284, Dec. 6, 1995, and pro› visional application No. (J()/008,286, Dec. 6, 1995. 

[51) Int. CI. 6 ..................................................... C07C 45/50 

[52) U.S. CI .............................................. 568/454; 568/451 

[58] Field of Search ...................................... 568/451. 454 

## Related U.S. Application Data 

<img src='content_image/939012.jpg'>

# [111 Patent Number: 5,744,649 

# [45] Date of Patent: *Apr. 28, 1998 

## [56) References Cited 

Primary Examiner-Gary Geist 

Assistant Examiner-Sreeni Padmanabhan 

Attome)> Agent, or Finn-Gerald L. Coon 

## [57) 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 phospho› rus acidic compounds, a metal-organophosphite ligand com› plex catalyst and optionally free organophosphite ligand which process comprises treating said hydroformylation reaction product fluid with water sufficient to remove at least some amount of said one or more phosphorus acidic com› pounds from said hydroformylation reaction product fluid. 

<img src='content_image/939036.jpg'>

US005744649A 

## U.S. PXI’ENT DOCUMENTS 

## 20 Claims, 1 Drawing Sheet 

