Hot-applied asphaltic and non-asphaltic sealant compositions and methods having or using defined effective polymer concentration (EPC) values of at least 7.0 are provided which (a) provide improved softening points and improved resilience without the use of any inorganic filler materials, while at the same time maintaining or increasing the ductilities of the compositions, or (b) enable the use of one or more inorganic filler materials to provide improved softening points and improved resilience while maintaining desirable viscosity levels and at least significantly limiting any losses in ductility or increasing the ductilities of the compositions.

Modified asphalt compositions and methods of making same. The modified asphalt compositions include asphalt, a crosslinkable polymer, and a dialkyl polysulfide. The methods of making the compositions include blending a mixture of asphalt, a crosslinking polymer, and a dialkyl polysulfide, such as at a temperature of about 100-300° C.

Asphalt modifier packages and rubber-modified asphalts including the packages are described. Asphalt modifier packages can include an amine functionalized wax and an elastomeric polymer in conjunction with ground tire rubber. Asphalt modifiers can include a ground tire rubber compounded with a reactive elastomeric terpolymer. Rubber-modified asphalts can exhibit an excellent stability of the ground tire rubber additive. Rubber-modified asphalts can exhibit a storage stability separation factor of about 6° F. or less, an MSCR J.sub.nr value of from about 0.05 to about 2 at 3.2 kPa and 67° C., and an MSCR percent recovery of from about 20% to about 75% at 3.2 kPa and 67° C.

The present invention relates to a method for reducing the emission of hydrogen sulfide during the production of an asphalt composition.

An asphaltic sheet comprising an asphaltic component including an asphalt binder and expandable graphite.

An asphaltic sheet comprising an asphaltic component including an asphalt binder and expandable graphite.

Described herein is a polymerized biorenewable, petroleum based, previously modified, or functionalized oil, comprising a polymeric distribution having about 2 to about 80 wt % oligomer content, a polydispersity index ranging from about 1.0 to about 5.0, and sulfur content ranging from 0.001 wt % to about 8 wt %. Methods of manufacturing the polymerized oil as well as its incorporation into asphalt paving, roofing, and coating applications are also described.

An asphaltic sealant composition and method which use (a) the incorporation of one or more pigment and/or UV absorbing materials, (b) a low shear production method, and (c) the addition of an epoxidized ester of a vegetable oil or a plasticizer, effective for increasing the degree of dispersion of the pigment material in the sealant composition, to provide improve resistance to UV radiation.

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.

The present disclosure related generally to a bituminous composition suitable for use in roofing material, the bituminous composition a bituminous component comprising an asphalt component in an mount in the range of 75-95 wt% of the bituminous component, a rubber polymer in an amount of 5-20 wt% of the bituminous component, and a polyolefin wax in an amount up to 5 wt% of the bituminous component; and dispersed within the bituminous component, a filler component comprising at least one of both huntite and hydromagnesite; wollastonite; and both magnesium hydroxide and zinc borate, wherein the total amount of the huntite, hydromagnesite, wollastonite, magnesium hydroxide and zinc borate is in the range of 20-70 wt% of the bituminous component.