Abstract: Described herein are piperazine bis-urea and bis-thiourea based inhibitor compounds, methods of inhibiting steel corrosion in the presence of corrosive media comprising introducing said compounds into the corrosive media in contact with the steel, and a synthesis of said compounds.

Abstract: A method of waterproofing or damp proofing a protected member having a surface with a sulfur-extended elastomer asphalt binder composition uses a sulfur-extended elastomer asphalt binder composition that includes elemental sulfur, an elastomer and an asphalt binder. The method includes the steps of combining the elastomer with the asphalt binder maintained at an elastomer mixing temperature such that an intermediate asphalt binder mixture forms, and combining elemental sulfur with the intermediate asphalt binder maintained at a sulfur mixing temperature such that the sulfur-extended elastomer asphalt binder composition forms. The method also includes the step of applying the sulfur-extended elastomer asphalt binder composition to the surface of the protected member such that the sulfur-extended elastomer asphalt binder composition contacts, adheres to and forms a layer upon the surface of the protected member. The asphalt binder composition is applied at a temperature no greater than 145° C.

Abstract: The present invention relates to asphalt compositions. The present invention provides for a sulfur rubber asphalt binder composition that includes a base asphalt having a softening point, elemental sulfur, and a recycled crumb rubber material. The crumb rubber material is combined with the base asphalt and the elemental sulfur to create the sulfur rubber asphalt binder composition. The crumb rubber material is present in the sulfur rubber asphalt binder in an amount effective to increase the softening point as compared to the softening point of the base asphalt.

Abstract: A method of removing an iron sulfide scale from a surface in fluid communication with a wellbore and/or subterranean formation comprising contacting the iron sulfide scale on the surface with a composition to dissolve the iron sulfide scale in the composition. The composition comprises (a) at least one chelating agent selected from the group consisting of DTPA, EDTA HEDTA, GLDA, CDTA, and MGDA, and salts thereof, and (b) at least one converting agent selected from the group consisting of potassium carbonate (K2CO3), potassium formate (HCOOK), potassium hydroxide (KOH), potassium chloride (KCl), cesium formate (HCOOCs), and cesium chloride (CsCl). In the composition, the weight ratio of (a):(b) lies in the range 7-60:2-20.

Abstract: An oxadiazole dye for use as an organic photosensitizer. The oxadiazole dye comprising donor-?-spacer-acceptor type portions in which at least one of an oxadiazole isomer acts as a ?-conjugated bridge (spacer), a biphenyl unit acts as an electron-donating unit, a carboxyl group act as an electron acceptor group, and a cyano group acts as an anchor group. An optional thiophene group acts as part of the ?-conjugated bridge (spacer). The dye for use as organic photosensitizers in a dye-sensitized solar cell and in photodynamic therapies. Computational DFT and time dependent DFT (TD-DFT) modeling techniques showing Light Harvesting Efficiency (LHE), Free Energy for Electron Injection (?Ginject), Excitation Energies, and Frontier Molecular Orbitals (FMOs) indicate that the series of dye comprise a more negative ?Ginject and a higher LHE value; resulting in a higher incident photon to current efficiency (IPCE).

Abstract: The present invention relates to asphalt compositions. The present invention provides for a sulfur rubber asphalt binder composition that includes a base asphalt having a softening point, elemental sulfur, and a crumb rubber material. The crumb rubber material is combined with the base asphalt and the elemental sulfur to create the sulfur rubber asphalt binder composition. The crumb rubber material is present in the sulfur rubber asphalt binder in an amount effective to increase the softening point as compared to the softening point of the base asphalt.

Abstract: An oxadiazole dye for use as an organic photosensitizer. The oxadiazole dye comprising donor-?-spacer-acceptor type molecules in which at least one of an oxadiazole group acts as a ?-conjugated bridge (spacer), a naphthyl unit acts as an electron-donating unit, a carboxyl group act as an electron acceptor group, and a cyano group acts as an anchor group. An optional thiophene group acts as part of the ?-conjugated bridge (spacer). The dye for use as organic photosensitizers in a dye-sensitized solar cell. The dye for use in photodynamic therapies. Computational DFT and time dependent DFT (TD-DFT) modeling techniques showing Light Harvesting Efficiency (LHE), Free Energy for Electron Injection (?Ginject), Excitation Energies, and Frontier Molecular Orbitals (FMOs) indicate that the series of dye comprise a more negative ?Ginject and a higher LHE value; resulting in a higher incident photon to current efficiency (IPCE).

Abstract: An oxadiazole dye for use as an organic photosensitizer. The oxadiazole dye comprising donor-?-spacer-acceptor type portions in which at least one of an oxadiazole isomer acts as a ?-conjugated bridge (spacer), a biphenyl unit acts as an electron-donating unit, a carboxyl group act as an electron acceptor group, and a cyano group acts as an anchor group. An optional thiophene group acts as part of the ?-conjugated bridge (spacer). The dye for use as organic photosensitizers in a dye-sensitized solar cell and in photodynamic therapies. Computational DFT and time dependent DFT (TD-DFT) modeling techniques showing Light Harvesting Efficiency (LHE), Free Energy for Electron Injection (?Ginject), Excitation Energies, and Frontier Molecular Orbitals (FMOs) indicate that the series of dye comprise a more negative ?Ginject and a higher LHE value; resulting in a higher incident photon to current efficiency (IPCE).

Abstract: A sulfur-extended plastomer asphalt binder composition useful for water proofing, damp proofing and roofing applications includes elemental sulfur, a plastomer and an asphalt binder. The sulfur-extended plastomer asphalt binder composition can be applied to the surface of a protected member such that the sulfur-extended plastomer asphalt binder composition contacts, adheres to and forms a layer upon the surface of the protected member. The asphalt binder composition is applied at a temperature no greater than 150° C.

Abstract: An oxadiazole dye for use as an organic photosensitizer. The oxadiazole dye comprising donor-?-spacer-acceptor type portions in which at least one of an oxadiazole isomer acts as a ?-conjugated bridge (spacer), a biphenyl unit acts as an electron-donating unit, a carboxyl group act as an electron acceptor group, and a cyano group acts as an anchor group. An optional thiophene group acts as part of the ?-conjugated bridge (spacer). The dye for use as organic photosensitizers in a dye-sensitized solar cell and in photodynamic therapies. Computational DFT and time dependent DFT (TD-DFT) modeling techniques showing Light Harvesting Efficiency (LHE), Free Energy for Electron Injection (?Ginject), Excitation Energies, and Frontier Molecular Orbitals (FMOs) indicate that the series of dye comprise a more negative ?Ginject and a higher LHE value; resulting in a higher incident photon to current efficiency (IPCE).

Abstract: An oxadiazole dye for use as an organic photosensitizer. The oxadiazole dye comprising donor-?-spacer-acceptor type portions in which at least one of an oxadiazole isomer acts as a ?-conjugated bridge (spacer), a biphenyl unit acts as an electron-donating unit, a carboxyl group act as an electron acceptor group, and a cyano group acts as an anchor group. An optional thiophene group acts as part of the ?-conjugated bridge (spacer). The dye for use as organic photosensitizers in a dye-sensitized solar cell and in photodynamic therapies. Computational DFT and time dependent DFT (TD-DFT) modeling techniques showing Light Harvesting Efficiency (LHE), Free Energy for Electron Injection (?Ginject), Excitation Energies, and Frontier Molecular Orbitals (FMOs) indicate that the series of dye comprise a more negative ?Ginject and a higher LHE value; resulting in a higher incident photon to current efficiency (IPCE).

Abstract: An oxadiazole dye for use as an organic photosensitizer. The oxadiazole dye comprising donor-?-spacer-acceptor type molecules in which at least one of an oxadiazole group acts as a ?-conjugated bridge (spacer), a naphthyl unit acts as an electron-donating unit, a carboxyl group act as an electron acceptor group, and a cyano group acts as an anchor group. An optional thiophene group acts as part of the ?-conjugated bridge (spacer). The dye for use as organic photosensitizers in a dye-sensitized solar cell. The dye for use in photodynamic therapies. Computational DFT and time dependent DFT (TD-DFT) modeling techniques showing Light Harvesting Efficiency (LHE), Free Energy for Electron Injection (?Ginject), Excitation Energies, and Frontier Molecular Orbitals (FMOs) indicate that the series of dye comprise a more negative ?Ginject and a higher LHE value; resulting in a higher incident photon to current efficiency (IPCE).

Abstract: An oxadiazole dye for use as an organic photosensitizer. The oxadiazole dye comprising donor-?-spacer-acceptor type molecules in which at least one of an oxadiazole group acts as a ?-conjugated bridge (spacer), a naphthyl unit acts as an electron-donating unit, a carboxyl group act as an electron acceptor group, and a cyano group acts as an anchor group. An optional thiophene group acts as part of the ?-conjugated bridge (spacer). The dye for use as organic photosensitizers in a dye-sensitized solar cell. The dye for use in photodynamic therapies. Computational DFT and time dependent DFT (TD-DFT) modeling techniques showing Light Harvesting Efficiency (LHE), Free Energy for Electron Injection (?Ginject), Excitation Energies, and Frontier Molecular Orbitals (FMOs) indicate that the series of dye comprise a more negative ?Ginject and a higher LHE value; resulting in a higher incident photon to current efficiency (IPCE).

Abstract: An oxadiazole dye for use as an organic photosensitizer. The oxadiazole dye comprising donor-?-spacer-acceptor type portions in which at least one of an oxadiazole isomer acts as a ?-conjugated bridge (spacer), a biphenyl unit acts as an electron-donating unit, a carboxyl group act as an electron acceptor group, and a cyano group acts as an anchor group. An optional thiophene group acts as part of the ?-conjugated bridge (spacer). The dye for use as organic photosensitizers in a dye-sensitized solar cell and in photodynamic therapies. Computational DFT and time dependent DFT (TD-DFT) modeling techniques showing Light Harvesting Efficiency (LHE), Free Energy for Electron Injection (?Ginject), Excitation Energies, and Frontier Molecular Orbitals (FMOs) indicate that the series of dye comprise a more negative ?Ginject and a higher LHE value; resulting in a higher incident photon to current efficiency (IPCE).

Abstract: An oxadiazole dye for use as an organic photosensitizer. The oxadiazole dye comprising donor-?-spacer-acceptor type portions in which at least one of an oxadiazole isomer acts as a ?-conjugated bridge (spacer), a biphenyl unit acts as an electron-donating unit, a carboxyl group act as an electron acceptor group, and a cyano group acts as an anchor group. An optional thiophene group acts as part of the ?-conjugated bridge (spacer). The dye for use as organic photosensitizers in a dye-sensitized solar cell and in photodynamic therapies. Computational DFT and time dependent DFT (TD-DFT) modeling techniques showing Light Harvesting Efficiency (LHE), Free Energy for Electron Injection (?Ginject), Excitation Energies, and Frontier Molecular Orbitals (FMOs) indicate that the series of dye comprise a more negative ?Ginject and a higher LHE value; resulting in a higher incident photon to current efficiency (IPCE).

Abstract: A method of removing an iron sulfide scale from a surface in fluid communication with a wellbore and/or subterranean formation comprising contacting the iron sulfide scale on the surface with a composition to dissolve the iron sulfide scale in the composition. The composition comprises (a) at least one chelating agent selected from the group consisting of DTPA, EDTA HEDTA, GLDA, CDTA, and MGDA, and salts thereof, and (b) at least one converting agent selected from the group consisting of potassium carbonate (K2CO3), potassium formate (HCOOK), potassium hydroxide (KOH), potassium chloride (KCl), cesium formate (HCOOCs), and cesium chloride (CsCl). In the composition, the weight ratio of(a):(b) lies in the range 7-60:2-20.

Abstract: The present invention relates to homogeneous sulfur-modified polymer compositions, methods related thereto and an asphaltic concrete mixture.

Abstract: The present invention relates to asphalt compositions. The present invention provides for a sulfur rubber asphalt binder composition that includes a base asphalt having a softening point, elemental sulfur, and a recycled crumb rubber material. The crumb rubber material is combined with the base asphalt and the elemental sulfur to create the sulfur rubber asphalt binder composition. The crumb rubber material is present in the sulfur rubber asphalt binder in an amount effective to increase the softening point as compared to the softening point of the base asphalt.

Abstract: A method of removing an iron sulfide scale from a surface in fluid communication with a wellbore and/or subterranean formation comprising contacting the iron sulfide scale on the surface with a composition to dissolve the iron sulfide scale in the composition. The composition comprises (a) at least one chelating agent selected from the group consisting of DTPA, EDTA, HEDTA, GLDA, CDTA, and MGDA, and salts thereof, and (b) at least one converting agent selected from the group consisting of potassium carbonate (K2CO3), potassium formate (HCOOK), potassium hydroxide (KOH), potassium chloride (KCl), cesium formate (HCOOCs), and cesium chloride (CsCl). In the composition, the weight ratio of (a):(b) lies in the range 7-60:2-20.

Abstract: A method of waterproofing or damp proofing a protected member having a surface with a sulfur-extended elastomer asphalt binder composition uses a sulfur-extended elastomer asphalt binder composition that includes elemental sulfur, an elastomer and an asphalt binder. The method includes the steps of combining the elastomer with the asphalt binder maintained at an elastomer mixing temperature such that an intermediate asphalt binder mixture forms, and combining elemental sulfur with the intermediate asphalt binder maintained at a sulfur mixing temperature such that the sulfur-extended elastomer asphalt binder composition forms. The method also includes the step of applying the sulfur-extended elastomer asphalt binder composition to the surface of the protected member such that the sulfur-extended elastomer asphalt binder composition contacts, adheres to and forms a layer upon the surface of the protected member. The asphalt binder composition is applied at a temperature no greater than 145° C.