Roofing asphalt formulation
AssigneeAllied Corporation
InventorsIrving B. Chang, Robert E. Beckwith, Jr.
Life of this patent
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Abstract
The present invention is an asphaltic composition which is useful as a roofing asphalt formulation and method of making this formulation. The composition includes about 39 to 99 percent by weight of oxidized asphalt and between 1 and about 8 percent of oxidized polyethylene. It is preferred to use between about 0 to 40 percent of the saturant, which can be an unoxidized asphalt, to modify the viscosity of the formulation. There can be a filled asphaltic composition comprising about 40 percent by weight to about 99 percent by weight of the asphaltic composition and about 1 percent by weight to about 60 percent by weight of filler, which can be stone dust.
Claims7
An improved asphalt coated roofing material of the type having roofing felt coated with asphaltic coating composition wherein the improvement comprises a filled asphaltic coating composition comprising:
- about 40 percent to about 99 percent by weight of asphaltic composition comprising, about 52 to about 99 percent by weight of oxidized asphalt, about 1 to about 8 percent by weight of oxidized polyethylene and 0 to about 40 percent by weight of a saturant;
- and about 1 percent to about 60 percent by weight of stone dust.
An improved asphalt coated roofing material of the type having roofing felt coated with asphaltic coating composition wherein the improvement comprises an asphaltic coating composition comprising:
- about 52 to about 99 percent oxidized asphalt;
- about 1 to about 8 percent by weight of oxidized polyethylene;
- and 0 to about 40 percent by weight of a saturant.
Dependencies are inferred from the claim text.