Abstract: Polydiorganosiloxane polyoxamide, linear, block copolymers and methods of making the copolymers are provided. The method of making the copolymers involves reacting a diamine with a precursor having at least one polydiorganosiloxane segment and at least two oxalyamino groups. The polydiorganosiloxane polyoxamide block copolymers are of the (AB)n type.

Abstract: Compositions include a polymer and silica nanoparticles dispersed in an aqueous continuous liquid phase. The polymer is a water-soluble copolymer of acrylic acid and an acrylamide, or a salt of the same. Methods of making and using the compositions to coat a substrate are also disclosed.

Abstract: Method of performing a challenge-response process, comprising, in this sequence, the steps of a) providing a first challenge-response pair (50) on a source device (10), assigned to a responding device (30); b) loading the first challenge-response pair (50) from the source device (10) to a challenging device (20), while the source device (10) is operationally connected to the challenging device (20); c) performing a challenge-response process between the challenging device (20) and the responding devices (30) to which the first challenge-response pair (50) is assigned, d) loading one or more second challenge-response pairs (50) from a source device (10) to the challenging device (20), while the source device (10) is operationally connected to the challenging device (20), wherein the step of loading the first challenge-response pair (50) from the source device (10) to a challenging device (20) is performed before the challenging device (20) has received any information from one of the responding devices (30), t

Abstract: The present disclosure is directed to lamina(e) comprising cube corner elements, a tool comprising an assembly of laminae and replicas thereof. The disclosure further relates to retroreflective sheeting.

Abstract: A method of detecting an analyte is provided. The method includes providing a sample, a container 110 with a wall 115, and a catalyst for a luminescent reaction. The wall includes a colored portion 115b. The method further comprises forming a reaction in the container and detecting the presence or absence of light emitted from the reaction mixture in the container. Detecting light emitted from the container can comprise detecting light passing through the colored portion. The colored portion can be detected visually and the color can be associated with the identity of an analyte—specific reagent disposed in the container. Kits comprising the container and a catalyst for a luminescent reaction are also provided.

Abstract: Presently described are multilayer optical films, oriented polyester films, negatively birefringent copolyester polymers, fluorene monomers, and polyester polymers prepared from such fluorene monomers. In one embodiment, the multilayer optical film comprises at least one first birefringent optical layer; and at least one second optical layer having a lower birefringence than the first optical layer; wherein at least one of the optical layers comprises a negatively birefringent polyester polymer comprising a backbone and repeat units comprising at least one pendent aromatic group that is conformationally locked relative to the backbone.

Abstract: The present disclosure relates to a cleaning tool, a cleaning sheet and method of removes debris, lint, or hair from a variety of surfaces. The cleaning tool is provided with a first array of stems and a second array of stems, wherein the first array of stems are smaller and more densely included on a cleaning surface of the cleaning tool. The larger stems are able to loosen and pull deeply embedded hair from loose fabric surfaces, while the smaller stems are able to capture and retain the loosened hair.

Abstract: Structured surface articles such as molds or sheeting are formed on a compound substrate including a machined substrate and a replicated substrate. In one embodiment, the structured surface is a cube corner element on a compound substrate. In another embodiment, the structured surface is a geometric structure that has a plurality of faces, where one face is located on the machined substrate and another face is located on the replicated substrate. In yet another embodiment, at least some of the faces include a compound face with a portion formed on the machined substrate and a portion formed on the replicated substrate.

Abstract: Presently described are curable dental compositions comprising a polymerizable ionic liquid. The polymerizable ionic liquid comprises one or more ethylenically unsaturated (e.g. free-radically polymerizable) groups. Various embodiments of curable dental compositions are described. In some embodiments, the polymerizable ionic liquid is a monofunctional polymerizable ionic liquid comprising an ethylenically unsaturated group. In other embodiments, the polymerizable ionic liquid is a multifunctional polymerizable ionic liquid comprising at least two ethylenically unsaturated groups. The curable dental compositions describe herein can be utilized as dental primers, dental adhesives, dental sealants, and dental composites. In many embodiments, the curable dental compositions further comprise an initiator such as a photoinitiator.

Abstract: A conducting film or device electrode includes a substrate and two transparent or semitransparent conductive layers separated by a transparent or semitransparent intervening layer. The intervening layer includes electrically conductive pathways between the first and second conductive layers to help reduce interfacial reflections occurring between particular layers in devices incorporating the conducting film or electrode.

Abstract: An exposed lens retroreflective article that includes a binder layer; a layer of spaced apart optical elements that are partially embedded in the binder layer; a penetrated colored layer that is located between the spaced apart optical elements; and a reflective layer that is located functionally behind the layer of optical elements and the penetrated colored layer.

Abstract: An optical fiber connector for terminating an optical fiber is provided. The optical fiber connector includes a housing configured to mate with a receptacle. The connector also includes a collar body disposed in the housing and retained between the housing's outer shell and a backbone. The collar body includes a swivel head coupled to a front end portion of the collar body, where the swivel head is configured to receive a ferrule. The swivel head is configured to pivot with respect to the front end portion of the collar body by a controlled amount upon a side pull force being placed on the connector and/or optical fiber.