×

Solar heat reflective roofing membrane and process for making the same

  • US 10,245,816 B2
  • Filed: 05/06/2015
  • Issued: 04/02/2019
  • Est. Priority Date: 09/07/2005
  • Status: Active Grant
First Claim
Patent Images

1. A process for preparing a roofing membrane with solar heat-reflectance, the process comprising:

  • laminating a tie-layer to a bituminous base sheet to form an intermediate sheet, the bituminous base sheet comprising a continuous substrate sheet of fibrous material, the continuous substrate sheet being saturated with a bituminous material and coated on at least one side with a bituminous material;

    depositing a solar heat-reflective polymeric coating composition directly on the intermediate sheet;

    curing the solar heat-reflective polymeric coating composition to form a solar heat-reflective coating; and

    depositing an upper coating composition directly on the solar heat-reflective coating to form an upper coating layer;

    wherein the tie-layer is laminated to the bituminous base sheet by heating the surface of the base sheet to above the softening temperature of the bituminous material, and adhering the tie-layer to the base sheet by contacting the base sheet with the tie-layer and permitting the bituminous material to partially saturate the tie-layer.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×