Hydroformylation of high-molecular-weight cis-1,4-polybutadiene catalyzed by HRH(CO)(PPh3)3

✍ Scribed by Sasisom Im-Erbsin; Pattarapan Prasassarakich; Garry L. Rempel

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 186 KB
• Volume: 93
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.20479

✦ Synopsis

Abstract

The kinetics of the hydroformylation of high‐molecular‐weight cis‐1,4‐polybutadiene in the presence of HRh(CO)(PPh~3~)~3~ and monochlorobenzene as a solvent were studied. The degree of conversion was examined by spectroscopic characterization with Fourier transform infrared and ^1^H‐NMR analysis. According to the 2^4^‐factorial experimental design, the temperature, catalyst concentration, and pressure appear to be significant factors for the hydroformylation of cis‐1,4‐polybutadiene. The kinetic studies indicated that the hydroformylation was first‐order with respect to the catalyst and carbon–carbon double‐bond concentrations and H~2~/CO pressure (1:1 ratio). The effects of the H~2~/CO ratio in the synthesis gas and added triphenyl phosphine were also studied. The apparent activation energy for the hydroformylation of cis‐1,4‐polybutadiene over the temperature range of 60–80°C was estimated to be 41 kJ/mol. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 854–869, 2004