Patents Assigned to MONTEFIBRE MAE TECHNOLOGIES S.R.L.
  • High-speed process for producing acrylic fibers and relative apparatus
    Patent number: 11946167
    Abstract: A process for the production of acrylic fibers, in particular a spinning process for obtaining precursor fibers of carbon fiber by the wet spinning of a polymer solution in an organic solvent and the relative apparatus.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: April 2, 2024
    Assignee: Montefibre Mae Technologies S.r.l.
    Inventors: Franco Francalanci, Pierluigi Gozzo, Ana Paula Vidigal, Marco Rovellini, Valter Guardiani
  • Single-step process for the production of a carbon fiber precursor
    Patent number: 11920262
    Abstract: An integrated and improved, single-step, process for the production of a carbon fiber precursor is described, specifically a process which starts from the comonomers and reaches the spinning step, obtaining the final precursor fiber.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: March 5, 2024
    Assignee: Montefibre Mae Technologies S.r.l.
    Inventors: Franco Francalanci, Ana Paula Vidigal
  • Optimized process for the preparation of a spinning solution for the production of acrylic fibers precursors of carbon fibers and the relative carbon fibers
    Patent number: 11313053
    Abstract: An optimized process for the preparation of a spinning solution for the production of acrylic fiber precursors (PAN) of carbon fibers and an optimized process for the production of carbon fibers from said acrylic precursor (PAN), are described.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: April 26, 2022
    Assignee: Montefibre Mae Technologies S.r.l.
    Inventor: Franco Francalanci
  • Simplified process for the production of acrylic fibers
    Patent number: 10619012
    Abstract: A process for the preparation of a homogeneous spinning solution for the production of acrylic fibers, which includes: preparing an aqueous suspension of homopolymer or copolymer of acrylonitrile through the polymerization of monomers in aqueous suspension, removal of the unreacted monomers, filtration and washing of the aqueous suspension, obtaining a filtration cake; dispersing the filtration cake; and evaporating the dispersion of polymer or obtaining the homogeneous spinning solution.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: April 14, 2020
    Assignee: MONTEFIBRE MAE TECHNOLOGIES S.R.L.
    Inventors: Franco Francalanci, Massimo Marinetti, Roberto Proserpio