Patents Assigned to Prodeco S.p.A.
  • Tanning composition and its use in the tanning and post-tanning of animal hides
    Patent number: 4902298
    Abstract: A tanning composition containing:(a) aluminum chlorohydroxide(b) the product of condensation of dicyandiamide and formaldehyde;(c) basic chrome sulphate; and(d) polyacrylic acid, polymethacrylic acid or a copolymer of acrylic acid and methacrylic acid;makes it possible, in the tanning treatments, of stably fixing high chrome levels in the animal hides, and of exhausting, to a substantially complete extent, the chrome contained in the tanning bath.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: February 20, 1990
    Assignee: Prodeco S.p.A.
    Inventors: Mauro D'Elia, Angelo Romano