Patents by Inventor Pascale Massiani

Pascale Massiani has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for selective diisopropylation of naphthyl compounds using shape selective acidic crystalline molecular sieve catalysts
    Patent number: 5026942
    Abstract: The selective isopropylation of a naphthyl compound to diisopropylnaphthalene enhanced in the 2,6-diisopropylnaphthalene isomer is obtained in the presence of an acidic crystalline molecular sieve catalyst having twelve membered oxygen rings. The catalyst pore aperture dimension range from 5.5 .ANG. to 7.0 .ANG.. The user of these shape selective catalysts results in a diisopropylnephthalene stream which is enhanced in .beta. isomers and enhanced in the desired 2,6-diisopropylnaphthalene isomer. A particularly preferred catalyst is synthetic Mordenite having a specific Si/Al ratio and NMR characteristics. Specific catalyst modifications are also described to improve selectivity to the desired 2,6-diisopropylnaphthalene isomer.
    Type: Grant
    Filed: December 12, 1989
    Date of Patent: June 25, 1991
    Assignee: Catalytica, Inc.
    Inventors: Jere D. Fellmann, Robert J. Saxton, Paul R. Wentrcek, Eric G. Derouane, Pascale Massiani