Patents by Inventor Antonio Quarta

Antonio Quarta 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).

  • Catalytic process for the preparation of polyacrylonitrile and acrylonitrile copolymers
    Patent number: 3959240
    Abstract: A process for polymerizing acrylonitrile monomer or copolymerizing a mixture of acrylonitrile monomer and further ethylenically unsaturated monomers copolymerizable therewith, which comprises contacting the monomer or mixture of monomers in an aqueous medium at a temperature not exceeding 55.degree.C with a catalytic system comprising a watersoluble persulphate, a hydroxylamine mono- or disulfonate and a water-soluble salt of a variable valence metal, such as a ferrous salt.
    Type: Grant
    Filed: July 8, 1974
    Date of Patent: May 25, 1976
    Assignee: Societe' Italiana Resine S.I.R. S.p.A.
    Inventors: Luciano Console, Alessandro Zecchin, Antonio Quarta
  • Catalytic process for preparing polymers and copolymers of acrylonitrile
    Patent number: 3939134
    Abstract: A method of polymerizing acrylonitrile monomer or copolymerizing a mixture of acrylonitrile monomer and further ethylenically unsaturated monomer copolymerizable therewith which comprises contacting in an aqueous medium the monomer of mixture of monomers with a catalytic system comprising hydrogen perioxide, a water-soluble salt of a hydroxylamine mono- or disulfonic acid and a water-soluble salt of a variable valence metal, such as a ferrous salt.
    Type: Grant
    Filed: July 8, 1974
    Date of Patent: February 17, 1976
    Assignee: Societa' Italiana Resine S.I.R. S.p.A.
    Inventors: Luciano Console, Alessandro Zecchin, Antonio Quarta