Multistep process for the manufacture of novel polyolefin...

Details Multistep process for the manufacture of novel polyolefin... Multistep process for the manufacture of novel polyolefin...

C - Chemistry, Metallurgy

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253/127, 196/56

C10M 105/04 (2006.01) C10G 29/20 (2006.01) C10G 45/02 (2006.01) C10G 50/02 (2006.01) C10G 69/12 (2006.01) C10M 107/10 (2006.01)

Patent

CA 2004494

ABSTRACT OF THE DISCLOSURE A multistep process is disclosed for the manufacture of synthetic lubricants from the C8 to C24 linear olefin components of below liquid fuel value petroleum distillate fractions derived via the high temperature thermal cracking of petroleum residua. Such feeds contain major amounts of 1-n-olefins, n-paraffins and greater than 0.1% concentration of sulfur mostly in the form aromatic, thiophene type sulfur compounds. In the first step of the present process such feeds are enriched in the straight chain aliphatic hydrocarbon components by one or more separation processes, preferably via urea adduction or by crystallization. In the second step, the olefin components are oligomerized to sulfur con- taining C30 to C60 polyolefins, preferably in the presence of BF3 complex catalysts. In the third step, the polyolefins are hydrogenated to novel isoparaffin lubricants in the presence of sulfur resistant catalysts, preferably transition metal sulfides.

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