Production of vinylidene olefins

Details Production of vinylidene olefins Production of vinylidene olefins

1996-02-05

1997-04-29

Howard, Jacqueline V.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By addition of entire unsaturated molecules, e.g.,...

585512, C07C 226

Patent

active

056251050

ABSTRACT:
Vinylidene olefin can be formed in good yield in much shorter reaction periods than found critical heretofore. The process involves dimerizing vinyl olefin with at least one trialkylaluminum compound as the sole catalyst component charged to the reaction vessel. These materials are charged to the reactor so that it contains in the range of 0.001 to 0.05 mol of trialkylaluminum per mol of the initial vinyl olefin. The reaction is performed at a temperature in the range of over 140.degree. C. and below 172.degree. C. for a period of time in the range of 1 to 24 hours sufficient to convert at least 10% by weight of the initial vinyl olefin to a different product with at least 80 wt % vinylidene dimer selectivity.

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patent: 5124465 (1992-06-01), Allen et al.
patent: 5516958 (1996-05-01), Schaerfl, Jr. et al.

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