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US 2019/0169437 A1Published application
Micronized asphalt modifiers, methods of modifying asphalt, asphalt compositions and methods of making
AssigneeLehigh Technologies, Inc.
InventorsPREMNATHAN NAIDOO, VERNON PATRICK KEATING
Life of this patent
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Abstract
An asphalt additive comprising a primary rheology modifying component and a secondary rheology modifying component, and asphalt compositions and products having such additive incorporated therein. The primary rheology modifying component is generally a polymer, and the secondary rheology modifying component may comprise a petroleum micro-wax.
Claims17
An asphalt comprising:
- a first component comprising a low asphaltine petroleum asphalt having an asphaltene content in the range of about 3 to 5 wt %;
- and,
- a second component comprising particles of polypropylene resin;
- wherein the resin particles have a diameter less than about 590 microns.
1 more element
A method of treating a petroleum asphalt having an asphaltene content, the method comprising:
- contacting a petroleum asphalt with particles of resin component, wherein the resin is polypropylene and the aspahaltene content is in the range of about 3 to 5 wt %, and the resin particles have a diameter less than about 590 microns.
An asphalt comprising:
- a first component comprising a petroleum asphalt having an asphaltene content;
- a second component dispersed in the asphalt comprising resin particles;
- and,
- a third component dispersed in the asphalt selected from the group consisting of ground tire rubber and polymers of styrene and butadiene,
- wherein the resin is polypropylene and the aspahaltene content is in the range of about 3 to 5 wt %, and the resin particles have a diameter less than about 590 microns.
2 more elements
A method of modifying a petroleum asphalt having an asphaltene content, the method comprising:
- forming a composition comprising the petroleum asphalt, a first component, a second component, a third component and a fourth component to form a modified asphalt, wherein the first component comprises polypropylene resin particles;
- the second component comprises wax, and the third component is a glycidyl functional polymer, and the fourth component is selected from the group consisting of ground tire rubber and polymers of styrene and butadiene, wherein the aspahaltene content is in the range of about 3 to 5 wt %, and the resin particles have a diameter less than about 590 microns.
Dependencies are inferred from the claim text.