Pigmentable non-asphaltic sealant compositions and methods for improved low temperature properties
AssigneeAdvetus Material Strategies, LLC
InventorsJoseph Drbohlav, III, Brian J. Majeska, Joseph L. Lorenc
Life of this patent
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Abstract
A pigmentable non-asphaltic composition for use as a sealant for cracks and joints in pavement surfaces, and for other purposes, and a method of forming the composition wherein (a) the composition comprises a non-asphaltic base blend which uses one or more tree rosin esters and (b) the low temperature properties of the composition, such as ductility and flexural creep stiffness, are enhanced by incorporating distilled tall oil and/or other low temperature property enhancing additives.
Claims20
A non-asphaltic composition for use as a hot-applied sealant, or for pavement markings, or for use as a binder for aggregates for filling potholes and road repairs, the non-asphaltic composition comprising:
- a non-asphaltic base blend which includes
- one or more processing oils in a total amount in a range of from 5% to 35% by weight based on a total weight of the non-asphaltic composition,
- one or more plasticizers in a total amount in a range of from 0.5% to 6% by weight based on the total weight of the non-asphaltic composition, and
- one or more tree rosin esters in a total amount in a range of from 25% to 80% by weight based on the total weight of the non-asphaltic composition and
- a low temperature property enhancing additive which (i) is incorporated when and/or after the non-asphaltic base blend is formed, (ii) is selected from a distilled tall oil, a distilled tall oil blend, one or more vegetable oils, or a combination thereof, and (iii) is included in the non-asphaltic composition in a total amount, in a range of from 1% to 25% by weight based on the total weight of the non-asphaltic composition, which increases a 4° C. ductility and decreases a flexural creep stiffness of the non-asphaltic composition.
A method for forming, and enhancing low temperature properties of, a non-asphaltic composition for use as a hot-applied sealant, or for pavement markings, or for use as a binder for aggregates for filling potholes and road repairs, the method comprising steps of:
- a) forming a non-asphaltic base blend by heating and blending
- one or more processing oils in a total amount in a range of from 5% to 35% by weight based on a total weight of the non-asphaltic composition,
- one or more plasticizers in a total amount in a range of from 0.5% to 6% by weight based on the total weight of the non-asphaltic composition, and
- one or more tree rosin esters in a total amount in a range of from 25% to 80% by weight based on the total weight of the non-asphaltic composition and
- b) incorporating, during and/or after step (a), a low temperature property enhancing additive in a total amount, in a range of from 1% to 25% by weight based on the total weight of the non-asphaltic composition, which increases a 4° C. ductility and decreases a flexural creep stiffness of the non-asphaltic composition, the low temperature property enhancing additive being a distilled tall oil, a distilled tall oil blend, one or more vegetable oils, or a combination thereof.
Dependencies are inferred from the claim text.