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US 2019/0153228 A1Published application
Use of a wax-modified, air rectified asphalt in built up roofing asphalt compositions
AssigneeOwens Corning Intellectual Capital, LLC
InventorDavid C. Trumbore
Life of this patent
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Abstract
A composition and method for making a heat stable, low application temperature Built Up Roofing Asphalt (BURA) is provided. The composition comprises a wax-modified, air rectified asphalt conforming to Type 3 BURA and, in some embodiments, Type 4 BURA specifications.
Claims21
1-13. (canceled)
An asphalt composition comprising:
- an air rectified asphalt blown to a first softening point from about 140° F. to about 175° F.;
- and
- a wax additive, wherein the additive has a melt point higher than about 100° C.;
- wherein the asphalt composition has a penetration at 25° C. of 12 dmm to 35 dmm.
1 more element
An asphalt composition comprising:
- an air rectified asphalt;
- and
- a wax additive, wherein the additive has a melt point higher than about 100° C.;
- wherein the asphalt composition has an equiviscous temperature (EVT) of from about 340° F. to about 390° F. for mopping applications and from about 380° F. to about 430° F. for mechanical applications.
1 more element
Dependencies are inferred from the claim text.