Coated roofing materials
AssigneeOwens Corning Intellectual Capital, LLC
InventorsScott Schweiger, Jonathan Verhoff, Jesse Gadley
Life of this patent
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Abstract
A roofing membrane is provided that includes at least one substrate at least partially impregnated with a first asphalt coating composition and a liquid parting agent emulsion applied to the upper surface of the asphalt-coated substrate. The liquid parting agent emulsion comprises one or more thermoplastic polymers and about 15 wt. % to about 40 wt. % of at least one mineral filler, based on the weight of the total solids in the emulsion. The first asphalt coating composition is free of oxidized asphalt.
Claims33
A roofing membrane comprising:
- at least one substrate at least partially impregnated with a first asphalt coating composition, said substrate having an upper surface and a lower surface;
- and
- a liquid parting agent emulsion applied to the upper surface of the asphalt-coated substrate, said liquid parting agent emulsion comprising:
- one or more thermoplastic polymers;
- and
- about 15 wt. % to about 40 wt. % of at least one mineral filler, based on the weight of the total solids in the emulsion, wherein said first asphalt coating composition is free of oxidized asphalt.
A method of forming a roofing membrane, the method comprising the steps of:
- at least partially impregnating a substrate with a first asphalt coating composition, said substrate having an upper surface and a lower surface;
- and
- applying a liquid parting agent emulsion to the upper surface of the asphalt-coated substrate, said liquid parting agent emulsion comprising:
- one or more thermoplastic polymers;
- and
- about 15 wt. % to about 40 wt. % of at least one mineral filler, based on the weight of the total solids in the emulsion, wherein said first asphalt coating composition is free of oxidized asphalt.
A roofing underlayment comprising:
- a substrate at least partially impregnated with a first asphalt coating composition comprising paving-grade asphalt, the substrate having an upper surface and a lower surface;
- a liquid parting agent emulsion applied to the upper surface of the asphalt-coated substrate, said liquid parting agent emulsion comprising:
- one or more thermoplastic polymers;
- and
- about 15 wt. % to about 40 wt. % of at least one mineral filler, based on the weight of the total solids in the emulsion;
- and
- a removeable release liner adhered to the lower surface,
- wherein the first asphalt coating composition includes less than 5 wt. % oxidized asphalt.
Dependencies are inferred from the claim text.