Patents Assigned to Grillo Zinkoxid GmbH
  • Process for controlling the scorch time (ST) in the vulcanization of silicic acid-filled rubber blends
    Patent number: 8674009
    Abstract: A process for controlling the scorch time (ST) in the vulcanization of vulcanizable blends containing a composition to be vulcanized, hydrophobized silicic acid and zinc oxide particles wherein the scorch time control is effected by the size and number of zinc oxide particles (amount). The process of the invention is also suitable for preparing vulcanized rubber articles.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: March 18, 2014
    Assignee: Grillo Zinkoxid GmbH
    Inventors: Klaus Diekstall, Burkhardt Jahn, Peter Schubert, Sven Hessdoefer