Asphalt compositions having improved properties and related coatings and methods
View Patent ↗The invention includes a composition to coat a substrate comprising: an asphalt material; a polymer that is not a polyol; and a polyol. The polyol has a molecular weight of about 1000 to about 5000 and/or the polyol is present in an amount no greater than about 30% by weight of the total composition. Also included are coated articles that comprise a substrate coated with a coating layer, wherein the coating layer is formed from a composition that comprises: an asphalt material, a polymer that is not a polyol; and a polyol. Also included are methods of improving the processability of a asphalt material comprising combining together an asphalt material, a polymer that is not a polyol, and a polyol, wherein the resultant composition exhibits improved processability as compared to an asphalt composition that does not contain a polyol. In the method in some embodiments, the polyol may be present in the resultant composition in an amount of no greater than 30% by weight and/or the polyol may have a molecular weight of about 1000 to about 5000. In some embodiments, the composition of the method does not contain at least one of a plasticizer and a surface active agent.
1. A hot melt blend composition to coat a substrate consisting of:
a. an asphalt material up to about 85% by weight of the total composition wherein the asphalt material is a de-asphaltized grade asphalt;
b. a polymer that is not a polyol selected from the group consisting of a natural rubber, a synthetic rubber, a thermoplastic rubber, a styrene butadiene styrene (SBS), an ethylene vinyl acetate (EVA), a thermosetting polymer, an acrylic polymer, a polyurethane polymer, a styrenated-acrylic polymer, a styrene/butadiene copolymer, an EPDM copolymer, atactic polypropylene and mixtures thereof; and
c. a polyol selected from the group consisting of a polyether polyol, a natural polyol, a polyester polyol and mixtures thereof;
wherein the polyol has a molecular weight of about 1000 to about 5000 and the polyol is present in an amount no greater than about 30% by weight of the total composition.
2. A hot melt blend composition to coat a substrate consisting of:
a. an asphalt material up to about 85% by weight of the composition wherein the asphalt material is a de-asphaltized grade asphalt;
b. a polymer that is not a polyol selected from the group consisting of a natural rubber, a synthetic rubber, a thermoplastic rubber, a styrene butadiene styrene (SBS), an ethylene vinyl acetate (EVA), a thermosetting polymer, an acrylic polymer, a polyurethane polymer, a styrenated-acrylic polymer, a styrene/butadiene copolymer, an EPDM copolymer, atactic polypropylene and mixtures thereof; and
c. a polyol selected from the group consisting of pentaerythritol, ethylene glycol, glycerin, polyethylene glycol, polypropylene glycol, and poly(tetramethylene ether) glycol, polypropylene glycol, polyethylene nonyl phenol and any mixtures thereof;
wherein the polyol is present in an amount no greater than about 30% by weight of the total composition.
3. The composition of claim 1 , wherein the polyol is present in an amount no greater than about 10% by weight of the total composition.
4. The composition of claim 2 , wherein the polyol is present in an amount no greater than about 10% by weight of the total composition.
5. The composition of claim 1 , wherein the polymer is present in the composition in an amount of no greater than about 40% by weight.
6. The composition of claim 2 , wherein the polymer is present in the composition in an amount of no greater than about 40% by weight.
7. A hot melt blend composition to coat a substrate consisting of:
a. an asphalt material up to about 85% by weight of the total composition wherein the asphalt material is a de-asphaltized grade asphalt;
b. a polymer that is not a polyol selected from the group consisting of a natural rubber, a synthetic rubber, a thermoplastic rubber, a styrene butadiene styrene (SBS), an ethylene vinyl acetate (EVA), a thermosetting polymer, an acrylic polymer, a polyurethane polymer, a styrenated-acrylic polymer, a styrene/butadiene copolymer, an EPDM copolymer, atactic polypropylene and mixtures thereof; and
c. a polyol selected from the group consisting of a polyether polyol, a natural polyol, a polyester polyol and mixtures thereof;
d. a filler;
wherein the polyol has a molecular weight of about 1000 to about 5000 and the polyol is present in an amount no greater than about 30% by weight of the total composition.
8. The composition of claim 7 , wherein the filler is selected from the group consisting of bentonite, laponite, saponite, nontronite, montmorillonite, and a titanate compound.
9. A hot melt blend composition to coat a substrate consisting of:
a. an asphalt material up to about 85% by weight of the composition wherein the asphalt material is a de-asphaltized grade asphalt;
b. a polymer that is not a polyol selected from the group consisting of a natural rubber, a synthetic rubber, a thermoplastic rubber, a styrene butadiene styrene (SBS), an ethylene vinyl acetate (EVA), a thermosetting polymer, an acrylic polymer, a polyurethane polymer, a styrenated-acrylic polymer, a styrene/butadiene copolymer, an EPDM copolymer, atactic polypropylene and mixtures thereof; and
c. a polyol selected from the group consisting of pentaerythritol, ethylene glycol, glycerin, polyethylene glycol, polypropylene glycol, and poly(tetramethylene ether) glycol, polypropylene glycol, polyethylene any mixtures thereof;
d. a filler;
wherein the polyol is present in an amount no greater than about 30% by weight of the total composition.
10. The composition of claim 9 , wherein the filler is selected from the group consisting of bentonite, laponite, saponite, nontronite, montmorillonite, and a titanate compound.
11. The composition of claim 1 , wherein the substrate is selected from the group consisting of a road bed and a building material.