The present invention provides an asphalt composition obtained by blending an asphalt and an addition polymerization-type polymer, the addition polymerization-type polymer having a hydroxyl value of 10 mgKOH/g or more and 60 mgKOH/g or less and having a weight average molecular weight (M.sub.w) of 2,500 or more and 70,000 or less.

A process for the enhancement of the byproducts of a process for the regeneration of exhaust oils is described, wherein said process for the regeneration of exhaust oils which includes at least one of the following steps: a) passing of the oil to be regenerated into one or more centrifuges, b) storage of the oil, before treatment, in suitable containers, c) desiloxanation and d) filtering. The byproducts of one or more of steps a) to d) are treated, gathered and mixed with one another and added to the bitumen coming out as tail of a fractioned distillation step of the above-said regeneration process of exhaust oils.

A plant for the carrying out of a process according to any one of the preceding claims is also described, comprising a processing unit for each of the byproducts coming from steps a) to d) and a mixer (6) with stirring (7).

A process for the enhancement of the byproducts of a process for the regeneration of exhaust oils is described, wherein said process for the regeneration of exhaust oils which includes at least one of the following steps: a) passing of the oil to be regenerated into one or more centrifuges, b) storage of the oil, before treatment, in suitable containers, c) desiloxanation and d) filtering. The byproducts of one or more of steps a) to d) are treated, gathered and mixed with one another and added to the bitumen coming out as tail of a fractioned distillation step of the above-said regeneration process of exhaust oils.

A plant for the carrying out of a process according to any one of the preceding claims is also described, comprising a processing unit for each of the byproducts coming from steps a) to d) and a mixer (6) with stirring (7).

A process for the enhancement of the byproducts of a process for the regeneration of exhaust oils is described, wherein said process for the regeneration of exhaust oils which includes at least one of the following steps: a) passing of the oil to be regenerated into one or more centrifuges, b) storage of the oil, before treatment, in suitable containers, c) desiloxanation and d) filtering. The byproducts of one or more of steps a) to d) are treated, gathered and mixed with one another and added to the bitumen coming out as tail of a fractioned distillation step of the above-said regeneration process of exhaust oils.

A plant for the carrying out of a process according to any one of the preceding claims is also described, comprising a processing unit for each of the byproducts coming from steps a) to d) and a mixer (6) with stirring (7).

A silane-containing compound having a cyclic structure in a molecular structure; a modified hydrogenated petroleum resin in which a bromine value, a silicon element content, a weight average molecular weight, and a molecular weight distribution are specific values; a modified hydrogenated petroleum resin obtained by subjecting the modified hydrogenated petroleum resin to a condensation reaction; an adhesive composition including the modified hydrogenated petroleum resin; an asphalt composition containing the silane-containing compound or the modified hydrogenated petroleum resin.

A silane-containing compound having a cyclic structure in a molecular structure; a modified hydrogenated petroleum resin in which a bromine value, a silicon element content, a weight average molecular weight, and a molecular weight distribution are specific values; a modified hydrogenated petroleum resin obtained by subjecting the modified hydrogenated petroleum resin to a condensation reaction; an adhesive composition including the modified hydrogenated petroleum resin; an asphalt composition containing the silane-containing compound or the modified hydrogenated petroleum resin.

A silane-containing compound having a cyclic structure in a molecular structure; a modified hydrogenated petroleum resin in which a bromine value, a silicon element content, a weight average molecular weight, and a molecular weight distribution are specific values; a modified hydrogenated petroleum resin obtained by subjecting the modified hydrogenated petroleum resin to a condensation reaction; an adhesive composition including the modified hydrogenated petroleum resin; an asphalt composition containing the silane-containing compound or the modified hydrogenated petroleum resin.

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.

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.