Various aspects of the present invention relate to cationic latex emulsions, methods of making the same, various materials including the cationic latex emulsion such as asphalt emulsions, and methods of making the asphalt emulsions. A cationic latex emulsion includes latex particles. The cationic latex emulsion includes an aqueous liquid emulsified with the latex particles. The cationic latex emulsion also includes a cationic surfactant that is a diquaternary ammonium surfactant.

Described herein are compositions and methods for waste-to-energy ash in engineered aggregate in road construction.

An oil-in-water emulsion comprising an asphalt and purified coal product (PCP) is provided, wherein the PCP is in particulate form, and wherein at least about 90% by volume (% v) of the particles are no greater than about 25 μm in diameter; wherein the PCP has an ash content of less than about 10 wt %. Methods are also provided for the use of PCP as a stabilizing additive in the manufacture of asphalt containing emulsions.

Pavement aging can be reduced by applying to an asphalt-containing pavement a topcoat layer or a surface treatment containing asphalt binder with sterols.

Asphalt emulsions and methods of forming an asphalt emulsion are provided. In one example, the asphalt emulsion includes a base asphalt component present in an amount of from about 40 to about 60 wt. % of the asphalt emulsion. Water is present in an amount of from about 40 to about 60 wt. % of the asphalt emulsion. An oxidized high-density polyethylene wax is present in an amount of from about 0.5 to about 5.0 wt. % of the asphalt emulsion. A slow-setting cationic emulsifier is present in an amount of from about 1.0 to about 2.0 wt. % of the asphalt emulsion.

Asphalt emulsions and methods of forming an asphalt emulsion are provided. In one example, the asphalt emulsion includes a base asphalt component present in an amount of from about 40 to about 60 wt. % of the asphalt emulsion. Water is present in an amount of from about 40 to about 60 wt. % of the asphalt emulsion. An oxidized high-density polyethylene wax is present in an amount of from about 0.5 to about 5.0 wt. % of the asphalt emulsion. A slow-setting cationic emulsifier is present in an amount of from about 1.0 to about 2.0 wt. % of the asphalt emulsion.

A recording head has a near-field transducer that extends a first distance away from a media-facing surface. Two subwavelength focusing mirrors are at an end of a waveguide proximate the media-facing surface and extend a second distance away from the media-facing surface that is less than the first distance. The subwavelength mirrors are on opposite crosstrack sides of the near-field transducer and separated from each other by a crosstrack gap. The subwavelength focusing mirrors each include a first material at the media-facing surface and a plasmonic material that covers an edge of the subwavelength focusing mirror that faces the near-field transducer. The first material is more mechanically robust than the plasmonic material.

Asphalt emulsions comprising asphalt present in an amount of 50% by weight or greater, based on the weight of the asphalt emulsion, an isocyanate present in an amount of 0.05% by weight or greater, based on the weight of the asphalt emulsion, and water. The isocyanate is derived from an aromatic, a cycloaliphatic, or an aliphatic isocyanate, or a mixture thereof. Preferably, the isocyanate includes methylene diphenyl diisocyanate. The asphalt emulsion can comprise one or more polyols. Methods of making the asphalt emulsions are also described.

Asphalt emulsions comprising asphalt present in an amount of 50% by weight or greater, based on the weight of the asphalt emulsion, an isocyanate present in an amount of 0.05% by weight or greater, based on the weight of the asphalt emulsion, and water. The isocyanate is derived from an aromatic, a cycloaliphatic, or an aliphatic isocyanate, or a mixture thereof. Preferably, the isocyanate includes methylene diphenyl diisocyanate. The asphalt emulsion can comprise one or more polyols. Methods of making the asphalt emulsions are also described.

The present invention relates to an asphalt composition which is excellent in storage stability at a high temperature, an asphalt mixture, a method for producing the same, and a road paving method. Provided are [1] an asphalt composition containing asphalt, a polyester resin, and a dispersant; [2] an asphalt mixture containing the asphalt composition as set forth above in [1] and an aggregate; [3] a road paving method including a step of laying the asphalt mixture as set forth above in [2], thereby forming an asphalt paving material layer; and [4] a method for producing an asphalt mixture including mixing asphalt, a polyester resin, a dispersant, and an aggregate at 130° C. or higher and 200° C. or lower.