A method of preparing a block copolymer composition is provided. The method includes: adding an aromatic vinyl monomer and a compound represented by Chemical Formula 1 to a hydrocarbon-based solvent and performing stirring to prepare a first mixed solution; adding a polymerization initiator to the first mixed solution and performing polymerization to prepare a second mixed solution; adding a conjugated diene-based monomer to the second mixed solution and performing polymerization to prepare a third mixed solution; and adding a coupling agent to the third mixed solution to perform a coupling reaction, An asphalt composition including the block copolymer composition prepared therefrom, is also provided.

Some embodiments relate to a method comprising one or more of the following steps: obtaining asphalt, obtaining at least one hardening agent, mixing the at least one hardening agent with the asphalt, so as to form a hardened asphalt, obtaining at least one polymer, mixing the at least one polymer with the hardened asphalt, so as to form a polymer modified asphalt, obtaining at least one filler, mixing the at least one filler with at least one of the hardened asphalt, the polymer modified asphalt, or any combination thereof, so as to form a filled coating, obtaining a roofing substrate, and applying the filled coating to the roofing substrate, so as to form a roofing shingle.

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.

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 application relates to a multiblock copolymer comprising at least one PA block, at least one PB block, and at least one PC block. PC block is positioned between PA block and PB block, where PC block is a rubber block, and where PA represents a polymer block comprising one or more units of monomer A, PB represents a polymer block comprising one or more units of monomer B, and PC represents a polymer block comprising one or more units of monomer C, with monomers A and B being the same or different.

A skim block composition includes a carrier mixed with a skim block addition, the skim block addition including from 0 to less than 100 wt % synthetic polymer, and from greater than 0 to 100% skim block. This provides productive use for the typical waste product skim block, which is the neutralized and coagulated product of skim latex formed during the production of natural rubber latex concentrate by centrifugation.

A bitumen having the properties of a Newtonian liquid is a mixture of a first oil pitch made of particles of soot and saturated oils and a second oil pitch made of aromatic oils and resins, characterized in that the first oil pitch has saturated oils at a content of at least 10% in wet weight and the second oil pitch has aromatic oils at a content of at least 10% in wet weight.

A method for producing an asphaltic sheet, the method comprising of providing an asphaltic sheet; and applying expandable graphite particles to the asphaltic sheet.

The present invention relates to an asphalt product. The asphalt product includes an asphalt binder and a bio-oil blend comprising a mixture of a non-hydrogenated bio-oil and a partially hydrogenated bio-oil, where the bio-oil blend is mixed with the asphalt binder to form an asphalt product having a shear stiffness of 0.20 kPa to 11,000 kPa at a temperature ranging from 25° C. to 85° C. and/or a viscosity of 0.15 Pa.Math.s to 1.50 Pa.Math.s at a temperature ranging from 120° C. to 165° C. The present invention further relates to methods of producing an asphalt product and methods of applying an asphalt product to a surface.

The present invention relates to an asphalt product that comprises an asphalt component and a plurality of pellets comprising a mixture of a ground tire rubber and an elastomeric polymer, where the density difference between the asphalt component and the plurality of pellets is less than 10%. The present invention further relates to a pellet comprising a ground tire rubber (“GTR”) and an elastomeric polymer mixed with the GTR, where the GTR has a density of less than 1.12 g/cm.sup.3. Also disclosed are methods of producing improved asphalt and paving a surface.