Patents by Inventor Leon R. Zengierski

Leon R. Zengierski 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 the preparation of polyhalobenzylic disulfooxonium compounds
    Patent number: 4141912
    Abstract: Polyhalobenzylic disulfooxonium compounds are produced by the reaction of aromatic methyl, halomethyl or hydroxymethyl substituents with sulfur trioxide. The disulfooxonium salts are readily converted to alcohols by hydrolysis to provide monomers for the production of fire resistant polymers and additives for polymers. Likewise, the disulfooxonium compounds of this invention present chemical intermediates for a wide range of useful products such as halogenated pesticides.
    Type: Grant
    Filed: October 7, 1977
    Date of Patent: February 27, 1979
    Assignee: Hooker Chemicals & Plastics Corp.
    Inventors: Victor Mark, Leon R. Zengierski
  • Polyhalobenzylic disulfooxonium compounds
    Patent number: 4075238
    Abstract: Polyhalobenzylic disulfooxonium compounds are produced by the reaction of aromatic methyl, halomethyl or hydroxymethyl substituents with sulfur trioxide. The disulfooxonium salts are readily converted to alcohols by hydrolysis to provide monomers for the production of fire resistant polymers and additives for polymers. Likewise, the disulfooxonium compounds of this invention present chemical intermediates for a wide range of useful products such as halogenated pesticides.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: February 21, 1978
    Assignee: Hooker Chemicals & Plastics Corporation
    Inventors: Victor Mark, Leon R. Zengierski