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# United States Patent [19J 

# Billig et al. 

# [54] HYDROFORMYLATION PROCESSES 

[75] Inventors: Ernst Billig. Huntington; David Robert Bryant. South Charleston. both of W. Va. 

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

[ *] Notice: The portion of the term of this patent subsequent to Nov. 26. 2016, has been disclaimed. 

[21] Appl. No.: 756,498 

[22) Filed: Nov. 26, 1996 

[60) Provisional application No. 60/008,284, Dec. 6, 1995, pro› visional application No. f,0/008,286, Dec. 6, 1995, provi› sional application No. 60/008,289, Dec. 6, 1995, and pro› visional application No. 00/008,763, Dec. 6, 1995. 

[51 J Int. CL 6 ..................................................... C07C 45/50 

[52] U.S. Cl . ............................................. 568/454; 568/451 

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

## Related U.S. Application Data 

<img src='content_image/921066.jpg'>

# [111 Patent Number: 5,763,670 

# [451 Date of Patent: * Jun. 9, 1998 

## [56] References Cited 

<img src='content_image/921065.jpg'>

## FOREIGN PATENT DOCUMENTS 

096987 12/1983 European Pat. Off .. 

Primary Examiner-Gary Geist 

Assistant Examiner-S. Padmanabhan 

Attorney, Agent, or Firm-Gerald L. Coon 

## [57) ABSTRACT 

This invention relates to a hydroformylation process which comprises reacting one or more olefinic unsaturated com› pounds with carbon monoxide and hydrogen in the presence of a metal-organopolyphosphite ligand complex catalyst to produce a reaction product fluid comprising one or more aldehydes, wherein said hydroformylation process is con› ducted at a free organopolyphosphite ligand concentration sufficient to prevent and/or lessen hydrolytic degradation of the organopolyphosphite ligand and deactivation of the metal-organopolyphosphite ligand complex catalyst. 

US005763670A 

## U.S. PATENf DOCUMENTS 

## 19 Claims, 1 Drawing Sheet 

