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Metathesis process for preparing an alpha, omega-functionalized olefin

United States Patent

October 12, 2010
View the Complete Patent at the US Patent & Trademark Office
A cross-metathesis process for preparing an .alpha.,.omega.-functionalized olefin, such as methyl 9-decenoate, and an .alpha.-olefin having three or more carbon atoms, such as 1-decene. The process involves contacting in a first reaction zone an .alpha.-functionalized internal olefin, such as methyl oleate, and an .alpha.-olefinic monomer having three or more carbon atoms, such as 1-decene, with a first metathesis catalyst to prepare an effluent stream containing the .alpha.,.omega.-functionalized olefin, such as methyl 9-decenoate, an unfunctionalized internal olefin, such as 9-octadecene, unconverted reactant olefins, and optionally, an .alpha.,.omega.-difunctionalized internal olefinic dimer, such as dimethyl 9-octadecen-1,18-dioate; separating said effluent streams; then contacting in a second reaction zone the unfunctionalized internal olefin with ethylene in the presence of a second metathesis catalyst to obtain a second product effluent containing the .alpha.-olefinic monomer having three or more carbon atoms; and cycling a portion of the .alpha.-olefinic monomer stream(s) to the first zone.
Burdett; Kenneth A. (Midland, MI), Mokhtarzadeh; Morteza (Charleston, WV), Timmers; Francis J. (Midland, MI)
Dow Global Technologies Inc. (Midland, MI)
11/ 915,794
June 2, 2006
This invention was made with Government support under Contract No. DE-FC36-01ID141213 awarded by the Department of Energy. The Government has certain rights in this invention.