March 21, 2011

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The following patent record is from the CAplusSM database.


Patent Number: US 7902415
Title: Processes for dimerizing or isomerizing olefins in the presence of hexadentate bimetallic complex
Inventor(s): Small, Brooke L.
Patent Assignee(s): Chevron Phillips Chemical Company LP, USA
Source: U.S. Pat. Appl. Publ., 21pp.; Chemical Indexing Equivalent to 151:101673 (WO) CODEN: USXXCO
Language: English
A process for dimerizing α-olefins comprises contacting an α-olefin having 3 or more C-atoms, a hexadentate bimetallic complex such as I and a cocatalyst such as, an example, aluminoxane and dimerizing the α-olefin, whereby at least 20% weight of the α-olefin has been converted to oligomers, at least 30% weight of the oligomers are dimers and at least 85% mol. of the dimers are linear. Thus, reacting at 23-32º  in a 2L Zipperclave reactor a mixture containing 400 g 1-decene, 400 g 1-dodecene and 8.6 mL modified methylaluminoxanes in the presence of 50 mg I gave 513 g of olefin oligomers containing 77.4% weight dimers, 22.2% weight trimers and 0.4% weight tetramers (75.4% weight of a dimer fraction was linear dimers).

View the full-text patent from USPTO.

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