Synthetic asphalt recycled tire rubber emulsions and processes for making them
OwnerJohn Partaneninventor
Life of this patent
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Abstract
Synthetic asphalt and petroleum asphalt modified synthetic asphalt emulsions which contain recycled tire rubber and processes for making the emulsions at temperatures above ambient or room temperature. These emulsions may contain significant quantities of recycled tire rubber and recycled and reclaimed motor oils and fluxes. In addition, aluminum chloride and ferric chloride may be used in clay-in-water solutions to form emulsifying agents for the synthetic asphalt and modified synthetic asphalt mixtures.
Claims19
A method of preparing synthetic asphalt recycled tire rubber emulsions and modified synthetic asphalt tire rubber emulsions which may be used as a crackfiller for asphalt and portland cement pavements, as a roof coating, as a sealcoat for asphalt pavements, and in the preparation of slurry seal coatings for asphalt pavements, the method comprising:
- preparing a first mixture of a synthetic asphalt recycled tire rubber base by mixing togather gilsonite or man-made asphaltene residium in a tall oil product with granulated minus 10 mesh to minus 80 mesh recycled tire rubber at temperatures of 162.8 C (325 F) to 260 C (500 F), and allowing the first mixture to cool to 135 C (275 F) to 204 C (400 F), and;
- preparing a second chemical clay in water mixture at temperatures between 4.4 C (40 F) and 60 C (140 F), and;
- slowly adding the first mixture with low to ultra high shear mixing to the second mixture to form an emulsion at 37.8 C (100 F) to 98.9 C (210 F).
A composition of petroleum asphalt modified synthetic asphalt recycled tire rubber emulsion which may be used as a crackfiller for asphalt and portland cement pavements, as a roof coating, as a sealcoat for asphalt pavement parking lots, and to prepare sluury seal coatings for asphalt pavements, the composition comprising:
- a first mixture of petroleum asphalt modified synthetic asphalt comprising 84% to 90% by weight petroleum asphalt, 1% to 12% by weight gilsonite or man-made asphaltene residium, and 1% to 12% by weight tall oil product, the first mixture at between 135 C (275 F) to 176.7 C (350 F), combined with high shear into a second mixture;
- the second mixture comprising 87% to 93% by weight water, 0.1% to 0.5% by weight aluminum chloride, 1% to 6% by weight nonylphenol surfactant, aand 3% to 6% by weight bentonite clay, at 4.4 C (40 F) to 60 C (140 F), with a pH of 4 to 6.5;
- wherein the first mixture when added and mixed with high shear into the second mixture results in an emulsion, wherein 4% to 7% by weight granulated minus 10 mesh to minus 80 mesh recycled tire rubber, and 1% to 5% by weight cationic polymer latex are added results in a final emulsion comprising 45% to 50% by weight water, 0.1% to 0.3% by weight aluminum chloride, 1% to 4% by weight nonylphenol surfactant, 1% to 3% by weight bentonite clay, 1% to 5% by weight cationic polymer latex, 32% to 40% by weight petroleum asphalt, 0.4% to 5% by weight gilsonite or man-made asphaltene residium, 0.4% to 5% by weight tall oil product, and 3% to 10% by weight granulated minus 10 mesh to minus 80 mesh recycled tire rubber, at temperatures between 60 C (140 F) and 98.9 C (210F).
A composition of a petroleum asphalt modified synthetic asphalt tire rubber emulsion which may be used as a crackfiller for asphalt and portland cement pavements, as a roof coating, as a sealcoat for asphalt pavement parking lots, and to prepare slurry seal coatings for asphalt pavements, the composition comprising:
- a first mixture of a petroleum asphalt modified syntheric asphalt comprising 84% to 90% by weight petroleum asphalt, 1% to 12% by weight gilsonite or man-made asphaltene residium, 1% to 12% by weight tall oil product, the first mixture prepared at 135 C (275F) to 176.7 C (350 F), and added with high shear into a second mixture;
- the second mixture comprising 87% to 90% by weight water, 0.1% to 0.5% by weight ferric chloride, 0.1% to 0.5% citric acid, 1% to 6% by weight nonylphenol surfactant, and 3% to 6% by weight bentonite clay, at 4.4 C (40 F) to 60 C (140 F), with a pH of 4 to 6.5;
- wherein the first mixture when added and mixed with high shear into the second mixture results in an emulsion, wherein 4% to 7% by weight granulated minus 10 mesh to minus 80 mesh recycled tire rubber, and 1% to 5% by weight cationic polymer latex are added results in an emulsion comprising 45% to 50% by weight water, 0.1% to 0.3% by weight ferric chloride, 0.1% to 0.3% by weight citric acid, 1% to 4% by weight nonylphenol surfactant, 1% to 3% by weight bentonite clay, 1% to 5% by weight cationic polymer latex, 32% to 40% by weight petroleum asphalt, 0.4% to 5.0% by weight gilsonite or man-made asphaltene residium, 0.4% to 5% by weight tall oil product, and 3% to 10% by weight granulated minus 10 mesh to minus 80 mesh recycled tire rubber, at between 60 C (140 F) to 98.9 C (210 F).
Dependencies are inferred from the claim text.