Patents by Inventor Ralph DiGuilio

Ralph DiGuilio 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).

  • Co-production of cyclohexylamine and bis(para-aminocyclohexyl) methane
    Publication number: 20060135814
    Abstract: Embodiments of the present invention disclose a process for the co-production of bis(para-aminocyclohexyl) methane (PACM). Also disclosed are articles of manufacture made using PACM produced by methods of this invention. The methods of the present invention generally include a first mixture having methylene di-aniline (MDA) and a second aromatic amine. The first mixture has less than 15% polymeric MDA by weight and the second aromatic amine is present in an amount to render the first mixture a liquid. The first mixture is hydrogenated to produce a product mixture comprising PACM and at least one second non-aromatic amine.
    Type: Application
    Filed: December 15, 2005
    Publication date: June 22, 2006
    Applicant: Huntsman Petrochemical Corporation
    Inventors: Wei-Yang Su, Ralph DiGuilio, Pete Morford