The present invention is generally related to the analysis of chemical compositions of hydrocarbons and hydrocarbon blends. This method, in particular embodiments, may apply specifically to the problem of analyzing extremely complex hydrocarbon-containing mixtures when the number and diversity of molecules makes it extremely difficult or impossible to realistically identify and quantify them individually in a reasonable timeframe. Particular SEC (size exclusion chromatography)-based methods and apparatus disclosed herein may be used to measure, e.g., the molecular size, weight, and/or volume, whether in absolute or relative manner, of the various components of eluate from the SEC stationary phase (e.g., a permeable gel). This analytical method is applicable on a wide variety of hydrocarbonaceous materials, and especially useful for, but not limited to oil, maltenes of oil, asphalt binders and asphalt binder blends, which may contain wide varieties of different types of additives, modifiers, and chemistries.

At least one embodiment of the inventive technology may involve the intentional changing of the stability of an emulsion from a first stability to a more desired, second stability upon the addition of a more aromatic asphaltene subfraction (perhaps even a most aromatic asphaltene subfraction), or a less aromatic asphaltene subfraction (perhaps even a least aromatic asphaltene subfraction) to a emulsion hydrocarbon of an oil emulsion, thereby increasing emulsion stability or decreasing emulsion stability, respectively. Precipitation and redissolution or sorbent-based techniques may be used to isolate a selected an asphaltene subfraction before its addition to an emulsion hydrocarbon when that hydrocarbon is part of an emulsion or an ingredient of a yet-to-be-formed emulsion.

A polymer modified asphalt (PMA) includes a modifier material mixed with hot asphalt to form a modified asphalt mixture and in which a gelatinous carrier material is mixed with an acidic activator material and a curing agent to form a solid crosslinking agent. The solid crosslinking agent is mixed with the modified asphalt mixture to produce a modified asphalt material having improved rheological characteristics which prevents gel and lump formation in PMA.

Scavenging compounds and compositions useful in reducing sulfide emissions from asphalt, such as polymer-treated asphalt, are disclosed. The scavenger compositions may include sulfide-scavenging agents. The scavenger compositions also include a metal-containing compound and optionally a solvent. Any of the compositions, sulfide-scavenging agents and metal-containing compounds may be anhydrous. Methods of using the compositions to reduce hydrogen sulfide emissions from asphalt are also disclosed.

The present disclosure provides a method, process and system for recycling an asphalt-based roofing material. In particular, the method, process and system are capable of removing and recovering an aggregate product, fiber product and an asphalt product from the asphalt-based roofing material. The aggregate, fiber and asphalt products each may be reused in a variety of applications.

The invention relates to a bitumen/polymer composition and to its process of manufacture. The bitumen/polymer composition includes first bitumen base having an intrinsic stability S of greater than 2.5 and/or a degree of peptization S.sub.a of greater than 0.60, and a second bitumen base having an intrinsic stability S of less than or equal to 2.50 and/or a degree of peptization S.sub.a of less than or equal to 0.60, an elastomer and an olefinic polymer adjuvant functionalized by at least glycidyl functional groups. The values of intrinsic stability S and of the degree of peptization S.sub.a are measured according to the standard ASTM D 7157-12. The bitumen/polymer composition exhibits improved low-temperature mechanical properties.

Pitch granules including a core made up of a first composition including at least one pitch, the composition having a penetrability at 25? C. of 0 to 45 1/10 mm, a ring-and-ball softening temperature (TBA) of 55? C. to 175? C., understanding the penetrability as measured according to standard EN 1426 and the TBA as measured according to standard EN 1427, and a layer encapsulating at least one portion of the surface of the core, the layer being made up of a coating composition including at least one anti-caking agent.

A reinforced composite material comprises a blend of a thermoplastic matrix and cellulosic fibers, wherein the thermo-plastic matrix comprises a tarry residue fraction from a lignocellulosic biomass liquefaction process. A process for the manufacture of the reinforced composite material comprises subjecting a lignocellulosic biomass to liquefaction in the presence of a liquefaction solvent to form a liquefaction product and a tarry residue; separating the tarry residue from the liquefaction product; and blending the tarry residue with cellulosic fibers to form a recyclable reinforced thermoplastic composite material.

This invention encompasses rubber modified asphalt cement compositions, as well as systems, apparatuses, methods for preparing, as well as methods for using rubber-modified asphalt cement compositions.

A method of mixing a crosslinking blend in a portable tote for use to crosslink polymer modified asphalts. The method includes providing a portable tote, where the tote includes a tank having a sidewall, a top and a bottom portion. Fixedly positioned partially within the tank interior is an air mixing system that includes a hollow wand that has a distal and a proximal end. The proximal end of the wand exits the tank. The distal end of the tote is connected to at least one accumulator plate, where the accumulator plate is adjacent to the interior bottom portion of the tank. Stored in the interior of the tank is a crosslinking blend suitable for use to crosslink polymer modified asphalts. The method includes the steps of attaching a pulsed gas controller to the proximal end of the wand and coupling a source of compressed gas to the controller, then activating the controller to cause mixing of the crosslinking blend by pulsing gases into the crosslinking blend for a sufficient period of time. After, or during mixing, the crosslinking blend is discharged from the interior of the tank, and the controller is removed from the wand, leaving said wand attached to the tank.