Patents Assigned to Hoechst Trespaphan
  • Process for producing coated polymeric articles and the articles produced thereby
    Patent number: 7118790
    Abstract: A method for producing a coated polymeric article by co-extruding polypropylene and a maleic anhydride modified polypropylene, corona-treating, and applying a polysilicate barrier is described. Also provided are films and bottles produced using this method.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: October 10, 2006
    Assignee: Hoechst Trespaphan
    Inventor: Ravi Prasad