Process for preparing oligomers having low unsaturation

Details Process for preparing oligomers having low unsaturation Process for preparing oligomers having low unsaturation

C - Chemistry, Metallurgy

07

C

C07C 2/12 (2006.01) C07C 2/08 (2006.01) C07C 11/02 (2006.01) C07C 13/02 (2006.01)

Patent

CA 2066551

ABSTRACT (D# 81,069-F) Synthetic lubricant base stocks may be prepared in good yield by oligomerizing linear olefin monomers using certain acidic calcium montmorillonite clay catalysts. When the oligomers are prepared at a temperature greater than about 200 °C, and any unreacted linear olefin monomer is removed, oligomers having an iodine value less than about 3 mg/g are obtained. An even lower iodine value is obtained when a hydrocarbon possessing a tertiary hydrogen is mixed with the linear olefin feed, and the mixture is contacted with the clay at a temperature greater than about 200°C. Little or no hydrogenation may be required of oligomers prepared in this manner to obtain base stocks suitable for use as synthetic lubricants.

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