Patents Assigned to Sestec Sp. z o.o.
  • Formaldehyde-free wood binder
    Patent number: 11078365
    Abstract: The formaldehyde-free binder for materials containing cellulose contains a hydroxy aldehyde resin polycondensed with an ammonium salt, the resin being obtained, in especially preferred embodiments, from glycerin, in situ, with the aid of hydrogen peroxide. A protein component consisting of animal blood is added. The binder is urea-free and can be used as a one-component or two-component binder. It binds materials such as wood, paper and other natural fibres to form high-quality composite material products.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: August 3, 2021
    Assignee: Sestec Sp. z o.o.
    Inventors: Hans-Joachim Edelmann, Oswald Sander