Abstract:
An uncolored roofing granule including a low solar absorption base and a low solar absorption and solar opaque coating presented on the base, the coating including a binder, a pigment, wherein the binder includes a curable component and a non-clay, thermally reactive curing agent.
Abstract:
Retroreflective elements and articles that include such elements. The retroreflective elements (100) include a solid spherical core (110) having an outer surface. A first complete concentric optical interference layer (112) overlays the outer surface of the core providing a first interface between the core and the first optical interference layer, and a second complete concentric optical interference layer (122) overlays the first optical interference layer to provide a second interface between the first optical interference layer and the second optical interference layer. In some embodiments, a third complete concentric optical interference layer overlays the second optical interference layer to provide a third interface between the second optical interference layer and the third optical interference layer. The retroreflective articles include a substrate having a first major surface and a second major surface with a plurality of the retroreflective elements affixed along the first major surface of the substrate.
Abstract:
Provided are compositions and materials that have varistor properties and are suitable for use in electrical stress control devices and surge arrestor devices. The compositions and materials include a polymeric material and calcined calcium copper titanate filler material and have a reversible non-linear current-voltage characteristic.
Abstract:
Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a (e.g., polymeric) binder. Also described are (e.g., glass-ceramic) microspheres, methods of making microspheres, as well as compositions of glass materials and compositions of glass-ceramic materials. The microspheres generally comprise lanthanide series oxide(s), titanium oxide (TiO2), and optionally zirconium oxide (ZrO2).
Abstract:
Transparent solid, fused microspheres are provided. In one embodiment, the microspheres contain alumina, zirconia, and silica in a total content of at least about 70% by weight, based on the total weight of the solid, fused microspheres, wherein the total content of alumina and zirconia is greater than the content of silica, and further wherein the microspheres have an index of refraction of at least about 1.6 and are useful as lens elements.
Abstract:
This invention provides a continuous ceramic oxide fiber comprising Al, Y, and O. In another aspect, a method of making the same is taught. The continuous ceramic oxide fiber is useful, for example, as thermal insulation, as a filter component, and as a reinforcement for structural composites.
Abstract:
Encapsulated electroluminescent phosphor particles and method for making same. The phosphor particles are encapsulated in a very thin oxide layer to protect them from aging due to moisture intrusion. The particles are encapsulated via a vapor phase hydrolysis reaction of oxide precursor materials at a temperature of between about 25.degree. C. and about 170.degree. C., preferably between about 100.degree. C. and about 150.degree. C. The resultant encapsulated particles exhibit a surprising combination of high initial luminescent brightness and high resistance to humidity-accelerated brightness decay.
Abstract:
Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres 0 partially embedded in a binder (e.g., polymeric). Also described are microspheres (e.g., glass-ceramic), methods of making microspheres, spheres, as well as compositions of glass materials and compositions of glass-ceramic materials. The microspheres generally comprise lanthanide series oxide(s), titanium oxide (TiO2), and optionally zirconium oxide (ZrO2).
Abstract:
Pavement markings having a substrate with a first major surface and a second major surface; and a plurality of retroreflective elements (100) disposed along the first major surface of the substrate, the retroreflective elements each having a solid spherical core (110) and at least a first complete concentric optical interference layer (120) overlying core. In some embodiments, the retroreflective elements of the pavement marking further include a second complete concentric optical interference layer overlying the first complete concentric optical interference layer. In still other embodiments, the retroreflective elements of the pavement markings further include a third complete concentric optical interference layer overlying the second complete concentric optical interference layer.
Abstract:
Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a (e.g., polymeric) binder. Also described are (e.g., glass-ceramic) microspheres, methods of making microspheres, as well as compositions of glass materials and compositions of glass-ceramic materials. The microspheres generally comprise lanthanide series oxide(s), titanium oxide (TiO2), and optionally zirconium oxide (ZrO2).