Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By addition of entire unsaturated molecules – e.g.,...
Patent
1996-02-05
1997-08-19
Howard, Jacqueline V.
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
By addition of entire unsaturated molecules, e.g.,...
585511, 585512, C10M14300
Patent
active
056591004
ABSTRACT:
Vinylidene olefin can be formed in good yield and high selectivity 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 0.5 mol of trialkylaluminum per mol of the initial vinyl olefin. The reaction is performed at a temperature in the range of 100.degree. to 200.degree. C. for a period of time sufficient to convert 10 to 99% by weight of the initial vinyl olefin to a different product and form a product mixture with at least 80 wt % vinylidene dimer selectivity. In conducting the process the liquid mixture in the reactor is maintained in direct contact with passivated ferrous metal such as low nickel ferrous metal or steel alloy interior surfaces during at least 90 percent of the total period of time during which the reactor contents are at a temperature above about 50.degree. C.
REFERENCES:
patent: 4155946 (1979-05-01), Sato et al.
patent: 4709112 (1987-11-01), Sato et al.
patent: 4795851 (1989-01-01), Frame et al.
patent: 4973788 (1990-11-01), Lin et al.
patent: 5124465 (1992-06-01), Allen et al.
patent: 5516958 (1996-05-01), Schaerfl, Jr. et al.
Ziegler, et al., Justus Liebigs Ann. Chem., vol. 629, pp. 1-74 (Mar. 1960) Translation.
The Use of Aluminum Alkyls in Organic Synthesis, Ethyl Corporation, pp. 1-75, (2nd Printing, Mar., 1977).
Amoco Corporation
Henes James R.
Hensley Stephen L.
Howard Jacqueline V.
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