Embodiments of the present disclosure are directed to an adhesive asphalt emulsion. The adhesive asphalt emulsion can be prepared in liquid form and applied to a material, such as a film or fabric, to create a self-adhering membrane. In some embodiments, the adhesive can be water vapor permeable, and can be applied in a continuous layer to a membrane. The adhesive asphalt emulsion can be prepared, applied, and in service at low temperatures.

Asphalt adhesive compositions and methods of producing the same are provided. In an exemplary embodiment, an asphaltic adhesive useful for self-adhering membranes includes asphalt at from about 40 to about 70 weight percent, based on a total weight of the adhesive. The adhesive also includes a low molecular weight (LMW) polyolefin at from about 1 to about 10 weight percent, based on the total weight of the adhesive. The LMW polyolefins have a weight average molecular weight (M.sub.w) of from about 500 to about 20,000 Daltons. The adhesive has an aged peeling strength greater than an aged peeling strength of a comparable comparison adhesive, wherein the comparison adhesive includes from about 40 to about 70 weight percent asphalt but is free of a LMW polyolefin, as determined by Guobiao recommended (GB/T) 328.20-2007 in specification Guobiao (GB) 23441-2009 (self-adhering polymer modified bituminous waterproof sheet.)

Asphalt adhesive compositions and methods of producing the same are provided. In an exemplary embodiment, an asphaltic adhesive useful for self-adhering membranes includes asphalt at from about 40 to about 70 weight percent, based on a total weight of the adhesive. The adhesive also includes a low molecular weight (LMW) polyolefin at from about 1 to about 10 weight percent, based on the total weight of the adhesive. The LMW polyolefins have a weight average molecular weight (M.sub.w) of from about 500 to about 20,000 Daltons. The adhesive has an aged peeling strength greater than an aged peeling strength of a comparable comparison adhesive, wherein the comparison adhesive includes from about 40 to about 70 weight percent asphalt but is free of a LMW polyolefin, as determined by Guobiao recommended (GB/T) 328.20-2007 in specification Guobiao (GB) 23441-2009 (self-adhering polymer modified bituminous waterproof sheet.)

Asphalt adhesive compositions and methods of producing the same are provided. In an exemplary embodiment, an asphaltic adhesive useful for self-adhering membranes includes asphalt at from about 40 to about 70 weight percent, based on a total weight of the adhesive. The adhesive also includes a low molecular weight (LMW) polyolefin at from about 1 to about 10 weight percent, based on the total weight of the adhesive. The LMW polyolefins have a weight average molecular weight (M.sub.w) of from about 500 to about 20,000 Daltons. The adhesive has an aged peeling strength greater than an aged peeling strength of a comparable comparison adhesive, wherein the comparison adhesive includes from about 40 to about 70 weight percent asphalt but is free of a LMW polyolefin, as determined by Guobiao recommended (GB/T) 328.20-2007 in specification Guobiao (GB) 23441-2009 (self-adhering polymer modified bituminous waterproof sheet.)

Disclosed are methods for preparing a high-viscosity non-hazardous bitumen composition for transportation in a railcar, wherein the method may include: (a) providing to a fractionator system a low-viscosity bitumen composition previously residing in a pipeline having a first viscosity and comprising a miscible blend of hydrocarbons, which blend was prepared by mixing a first diluent composition with a first bitumen composition; (b) heating the low-viscosity bitumen composition in the fractionator system at an operating temperature of from 170 C to 232 C to provide a first light fraction and a first heavy fraction; (c) removing at least a portion of the first heavy fraction from the fractionator system, wherein the first heavy fraction has a second viscosity that is higher than the first viscosity; (d) forming a high-viscosity non-hazardous bitumen composition from at least a portion of the first heavy fraction; and (e) directing the high-viscosity non-hazardous bitumen composition to a railcar.

Disclosed are methods for preparing a high-viscosity non-hazardous bitumen composition for transportation in a railcar, wherein the method may include: (a) providing to a fractionator system a low-viscosity bitumen composition previously residing in a pipeline having a first viscosity and comprising a miscible blend of hydrocarbons, which blend was prepared by mixing a first diluent composition with a first bitumen composition; (b) heating the low-viscosity bitumen composition in the fractionator system at an operating temperature of from 170 C to 232 C to provide a first light fraction and a first heavy fraction; (c) removing at least a portion of the first heavy fraction from the fractionator system, wherein the first heavy fraction has a second viscosity that is higher than the first viscosity; (d) forming a high-viscosity non-hazardous bitumen composition from at least a portion of the first heavy fraction; and (e) directing the high-viscosity non-hazardous bitumen composition to a railcar.

Disclosed are methods for preparing a high-viscosity non-hazardous bitumen composition for transportation in a railcar, wherein the method may include: (a) providing to a fractionator system a low-viscosity bitumen composition previously residing in a pipeline having a first viscosity and comprising a miscible blend of hydrocarbons, which blend was prepared by mixing a first diluent composition with a first bitumen composition; (b) heating the low-viscosity bitumen composition in the fractionator system at an operating temperature of from 170 C to 232 C to provide a first light fraction and a first heavy fraction; (c) removing at least a portion of the first heavy fraction from the fractionator system, wherein the first heavy fraction has a second viscosity that is higher than the first viscosity; (d) forming a high-viscosity non-hazardous bitumen composition from at least a portion of the first heavy fraction; and (e) directing the high-viscosity non-hazardous bitumen composition to a railcar.

A sealant composition for roofing shingles that includes a base asphalt, a linear and/or a radial copolymer, oil, and a wax is provided. The linear copolymer has an A-B di-block or an A-B-A tri-block structure. The radial copolymer may have an (A-B).sub.n radial structure, where n is at least 4, or a tri-block (A-B-A) radial structure having from 4 to 8 arms. Blocks A and B may individually represent (1) styrene and butadiene or (2) styrene and isoprene. The oil is a petroleum-based oil that both softens the asphalt and reduces the viscosity of the sealant composition. The wax may be a bis-stearamide wax. Additionally, the sealant composition may be reacted with elemental sulfur to crosslink the copolymer blend. The sealant composition seals at temperatures lower than conventional sealants and promotes the easy release of the shingle from a shingle bundle.

A sealant composition for roofing shingles that includes a base asphalt, a linear and/or a radial copolymer, oil, and a wax is provided. The linear copolymer has an A-B di-block or an A-B-A tri-block structure. The radial copolymer may have an (A-B).sub.n radial structure, where n is at least 4, or a tri-block (A-B-A) radial structure having from 4 to 8 arms. Blocks A and B may individually represent (1) styrene and butadiene or (2) styrene and isoprene. The oil is a petroleum-based oil that both softens the asphalt and reduces the viscosity of the sealant composition. The wax may be a bis-stearamide wax. Additionally, the sealant composition may be reacted with elemental sulfur to crosslink the copolymer blend. The sealant composition seals at temperatures lower than conventional sealants and promotes the easy release of the shingle from a shingle bundle.

A method of applying building a pavement structure using a polymer modified hot-applied tack coat is disclosed. This polymer modified tack coat is non-adhesive at ambient temperatures, and, thus, also non tracking. The tack is applied while hot, but cools quickly. The subsequent application of hot mix asphalt results in a superior bond between the asphalt layer and the tack layer. It is particularly well suited to bonded friction course applications since it removes the necessity of specialized spray paving machinery and allows the use of conventional asphalt distributors and pavers.