Process for the removal of cyclopentadiene from unsaturated C.su

Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By addition of extraneous agent – e.g. – solvent – etc.

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585832, 585864, C07C 701

Patent

active

044711530

ABSTRACT:
The presence of cyclopentadiene in unsaturated C.sub.5 -hydrocarbons is often very undesirable. This is because cyclopentadiene is a poison to many of the catalysts used to polymerize C.sub.5 -hydrocarbon monomers. This invention reveals a process for reducing the concentration of cyclopentadiene in impure unsaturated C.sub.5 -hydrocarbons containing cyclopentadiene, comprising adding to said impure unsaturated C.sub.5 -hydrocarbon (a) at least one member selected from the group consisting of trialkylaluminum compounds, dialkylaluminum hydride compounds, dialkylmagnesium compounds, and dialkylzinc compounds; and (b) an organonickel compound.

REFERENCES:
patent: 3510405 (1970-05-01), Takao et al.
patent: 3557239 (1971-01-01), Gebbart et al.
patent: 3723551 (1973-03-01), Kohler et al.
patent: 3911040 (1975-10-01), Shelton et al.
patent: 4310388 (1982-01-01), Volkamer et al.

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