Patents Represented by Attorney John F. Sieberth, Jr.

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  • Preparation of amine alanes and lithium aluminum tetrahydride
    Patent number: 4957726
    Abstract: Lithium aluminum hydride reacts with a tertiary amine to produce an amine alane and Li.sub.3 AlH.sub.6. Lithium values are recycled by reacting Li.sub.3 AlH.sub.6 with aluminum and hydrogen to produce LiAlH.sub.4. Since no metal halide by-product is produced in the first step, it has an advantage over other routes. The amine alane can react with SiF.sub.4 to produce silane and AlF.sub.3.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: September 18, 1990
    Assignee: Ethyl Corporation
    Inventors: Everett M. Marlett, Arcelio J. Malcolm, Won S. Park