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US 12,172,935 B2Granted
Coated roofing materials
AssigneeOwens Corning Intellectual Capital, LLC
InventorsScott Schweiger, Jonathan Verhoff, Jesse Gadley
Life of this patent
Estimating the term…
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.
Claims17
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:
- up to about 40 wt. % of a polypropylene emulsion, based on the weight of the total solids in the liquid parting agent emulsion;
- and
- from about 5 wt. % to about 40 wt. % of at least one mineral filler, based on the weight of the total solids in the emulsion, wherein the at least one mineral filler has an average particle size less than 50 microns,
- wherein the liquid parting agent emulsion is free of thermoset polyurethane polymers,
- wherein said first asphalt coating composition is a non-oxidized coating composition and is free of oxidized asphalt, and
- wherein the non-oxidized coating composition has a softening point of from 210 to 230° F.
6 more elements
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, wherein the asphalt coating composition comprises no greater than 5 wt. % oxidized asphalt;
- a liquid parting agent emulsion applied to the upper surface of the asphalt-coated substrate, said liquid parting agent emulsion comprising:
- up to about 40 wt. % of a polypropylene emulsion, based on the weight of the total solids in the liquid parting agent emulsion;
- and
- from about 5 wt. % to about 40 wt. % of at least one mineral filler, based on the weight of the total solids in the liquid parting agent emulsion,
- wherein the liquid parting agent emulsion is free of thermoset polyurethane polymers;
- and
- a removeable release liner adhered to the lower surface,
- wherein the liquid parting agent emulsion is applied at a coating weight of about 90 g/100 sq. ft to about 500 g/100 sq. ft.
6 more elements
Dependencies are inferred from the claim text.