Crosslinking with metal oxides other than zinc oxide

  • US 20040030008A1
  • Filed: 08/06/2002
  • Published: 02/12/2004
  • Est. Priority Date: 08/06/2002
  • Status: Abandoned Application
First Claim
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1. A method for preparing asphalt and polymer compositions comprising:

  • (a) heating an asphalt;

    (b) adding a polymer to the asphalt;

    (c) adding a crosslinker to the polymer;

    (d) adding an activator to the polymer, where the activator is selected from the group consisting of oxides of metals from groups 2, 8, 9, 10, 11, and 12 of the Periodic Table (new IUPAC notation) in the absence of zinc, and mixtures thereof, where the activator is present in an amount sufficient to improve crosslinking; and

    (e) adding an accelerator in an amount sufficient to improve crosslinking.

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