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US 11,447,637 B2Granted
Asphalt emulsion composition and method of treating a pavement surface
AssigneeEcolab USA Inc.
InventorsRobert Gabel, Glenda Vale, Eric Bauch, Chenthamarkshan Nair, Adam Meyers
Life of this patent
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Abstract
Compositions and methods are provided for treating a pavement such as by microsurfacing or slurry sealing. The compositions contain iron chelants that are effective in reducing discoloration of the pavement surface.
Claims27
A composition for preparing an asphalt emulsion, comprising an emulsifier and an iron chelant, wherein the iron chelant comprises:
- a carboxylic acid derivative of an alkylamine having the formula:
- wherein:
- R1, R2, R4, R5, and R6 are each individually hydrogen, C6-C30 alkyl, or —R7COOH;
- R3 and R7 are each individually alkylene;
- n is 0;
- and
- at least one of R1, R2, R4, and R5 is C6-C30 alkyl, and at least one of R1, R2, R4, and R5 is —R7COOH.
4 more elements
A composition for preparing an asphalt emulsion, comprising an emulsifier and an iron chelant, wherein the iron chelant comprises a carboxylic acid derivative of an alkylamine having the formula:
- wherein:
- R1, R2, R4, R5, and R6 are each individually hydrogen, C6-C30 alkyl, or —R7COOH;
- R3 and R7 are each individually alkylene;
- n is 1, or 2;
- and
- at least one of R1, R2, R4, R5, and R6 is C6-C30 alkyl, and at least two of R1, R2, R4, R5, and R6 is —R7COOH.
3 more elements
Dependencies are inferred from the claim text.