Abstract: A copolymer having tetrafluoroethylene units and units independently represented by formula (I) in a range from 0.02 to 2 mole percent, based on the total amount of the copolymer. Rf is a linear or branched perfluoroalkyl group having from 1 to 8 carbon atoms and optionally interrupted by one or more —0— groups, n is independently from 1 to 6, and z is 0, 1, or 2. The copolymer has a melt flow index in a range from 20 grams per 10 minutes to 40 grams per 10 minutes. The copolymer can be extruded to make articles, such as insulated cables. A method of making the copolymer is also disclosed.

Abstract: It is desired to find a new class of adhesion promoters to adhere the granules to the asphalt. Generally, the application is directed to an article comprising a substrate and a coating on the substrate, wherein the coating comprises a polyolefin. The substrate may be a roofing granule. In certain embodiments, the polyolefin is a chemically modified polyolefin. In some embodiments, the coating comprises a photocatalytic material.

Abstract: A composite particle that includes: a fluorescent semiconductor core/shell nanoparticle (preferably, nanocrystal); and a stabilizing additive of the formula (I), wherein R1 is a hydrocarbyl group, including aryl, alkaryl, alkyl or aralkyl, preferably at least one of R1 is aryl or alkaryl, more preferably at least two are aryl or alkaryl; R2 is R1 when a is one and a C1-C10 divalent alkylene when a is 2; Z is P, As or Sb.

Abstract: A method of analyzing a positional relationship between a dental restoration and a dental substructure. The method has steps of scanning a reference area and determining the shape of the dental substructure in its positional relationship to the reference area, and thereby providing a virtual dental substructure model and scanning the reference area along with scanning at least a portion of the dental restoration in fit position with the dental substructure to provide a virtual assembly model. The method further has the step of providing fitting quality information between the dental restoration model and the dental substructure model. The method utilizes superposing of further virtual models to provide the fitting quality information. The method facilitates the assessment of the quality of the fit between a dental restoration and a dental substructure.

Abstract: Light transparent fluoropolymer composition having less than 2 percent haze, comprising at least one of alkali metal (e.g., lithium, sodium, and potassium) cation, alkali metal (e.g., lithium, sodium, and potassium) and a corresponding anion (e.g., CO3,OH, OOCCH3), alkaline earth metal cation (e.g., calcium, magnesium, strontium, and barium), or alkaline earth metal cation (e.g., calcium, magnesium, strontium, and barium) and a corresponding anion (e.g., CO3,OH, OOCCH3), wherein the light transparent fluoropolymer has at least 90% visible light transmission. Exemplary uses of light transparent fluoropolymer compositions described herein include as films (e.g., solar reflective films, solar transparent frontside photovoltaic films, commercial graphic overlay film, commercial graphic film, and tubing (e.g., transparent tubing for medical)).

Abstract: The present invention relates to a high speed transmission cable (100) that includes a first inner conductor (110) and a dielectric film (120) that is concentrically arranged around at least a portion of the first conductor (110). The dielectric film (120) has a base layer (122) including a plurality of first protrusions (124) and second protrusions (126) formed on a first major surface of the base layer (122), wherein the first protrusions (124) and the second protrusions (126) are different from one another. The first protrusions (124) of the dielectric film (120) are disposed between the first inner conductor (110) and the base layer (122), the first protrusions (124) forming an insulating envelope around the first inner conductor (110).

Abstract: Polymerizable compositions comprising a redox initiator system is disclosed. The redox initiators comprises a photolabile reducing agent, that photolyzes and initiates the redox cycle. Dental compositions comprising dental resins and the photolabile redox initiator system are also described.

Abstract: Polarizer stacks are described. More particularly, polarizer stacks that include an absorbing polarizer and multiple reflective polarizers, including at least one collimating reflective polarizer are described. Such polarizer stacks are capable of emitted light that is both collimated and color neutral. Backlights incorporating such polarizer stacks are also described.

Abstract: A method of patterning a cylindrical tool, including providing a stamp including a base and a layer of solid state ionic conductor thereon, applying a negative of a predetermined pattern of features on a major surface of the solid state ionic conductor, providing a cylindrical tool having a metallic surface positioned proximate the stamp, and applying an electric field between the metallic surface and a cathode while moving the stamp against the metallic surface in rolling line contact so as to impart the predetermined pattern of features onto the metallic surface, wherein the cathode is either the base or a conductive element positioned adjacent to the base. The positive of the predetermined pattern of features may include a multiplicity of nano-sized features.

Abstract: A coated abrasive article includes a backing, a make layer, crushed abrasive particles, and a size layer. The crushed abrasive particles include: 35 to 100 weight percent of initial crushed abrasive particles having a first composition and first size grade, wherein a majority of the initial crushed abrasive particles are platey crushed abrasive particles, and wherein each platey crushed abrasive particle has a respective length, width, and thickness; and 0 to 65 weight percent of crushed filler particles having a second composition and a second size grade. The first and second compositions and/or size grades are different. The coated abrasive article has a direction of intended use, a majority of the platey crushed abrasive particles of the coated abrasive article are positioned with their thickness oriented substantially parallel to the direction of intended use. A method of making the coated abrasive article is also disclosed.

Abstract: An electrode layer has a plurality of substantially parallel electrodes disposed along a first direction. At least one electrode has a length along the first direction and a width from a first edge to a second edge along a second direction transverse to the first direction. At least one electrode comprises across its width at least one edge section, at least one intermediate section, and at least one central section, wherein an intermediate section is disposed along the electrode width between an edge section and the central section. At least one electrode edge section and intermediate section includes a plurality of electrically isolated regions arranged in a pattern along the electrode length. An electrode conductive area of the edge section is less than an electrode conductive area of the intermediate section.

Abstract: Silicone-based elastomeric materials, articles containing the silicone-based elastomeric materials, reaction mixtures used to form the silicone-based elastomeric materials, and methods of making the silicone-based elastomeric materials are described. The silicone-based elastomeric materials are prepared by polymerizing silicone compounds having at least two ethylenically unsaturated groups in the presence of actinic radiation and a controlled radical initiator. The controlled radical initiators are bis-dithiocarbamate or bis-dithiocarbonate compounds having a single carbon between the two dithiocarbamate or dithiocarbonate groups. The silicone-based elastomeric materials typically have improved mechanical properties compared to silicone-based elastomeric materials formed by free radical polymerization reactions in the presence of conventional photoinitiators.

Abstract: A beam expander including a partial reflector, a reflective polarizer curved about two orthogonal axes and a quarter wave retarder disposed between the reflective polarizer and the partial reflector is described. The beam expander is adapted to receive an input light beam incident on the partial reflector and transmit an expanded output light beam. Illuminators and projection systems including the beam expander are described.

Abstract: A light guide includes a light input surface, a first major surface orthogonal to the light input surface and a second major surface opposing the first major surface and forming a converging wedge with the first major surface. The second surface includes a plurality of doublet light extraction features closely-packed or separated by a land feature. Each doublet feature includes a first prism feature having a first shape and a second prism feature having a second shape and the second shape is different than the first shape.

Abstract: Polymer matrix composite comprising a porous polymeric network; and a plurality of thermally insulating particles distributed within the polymeric network structure, wherein the thermally insulating particles are present in a range from 15 to 99 weight percent, based on the total weight of the thermally insulating particles and the polymer (excluding the solvent); and wherein the polymer matrix composite has a density not greater than 3 g/cm3; and methods for making the same. The polymer matrix composites are useful, for example, in electronic devices.

Abstract: Object: Provided are an abrasive roll capable of easily improving abrasiveness and a method for manufacturing an abrasive roll. Solution: An abrasive roll (1) includes a core member (12) extending in the axial direction and an abrasive part (13) including a sheet (14) member of non-woven fabric wound a plurality of times around the core member (13), wherein a plurality of perforations (16) penetrating in the thickness direction of the sheet member (14) are formed in the sheet member (14).

Abstract: The present disclosure generally relates to baseboards and methods of making and using baseboards. Some baseboards described herein include a foam body having a first major surface opposite and separated from a second major surface and a top surface opposite and separated from a bottom surface; the foam body including a foam having a density of between about 20 kg/m3 and about 100 kg/m3; a rigid coating on one of the first or second major surfaces of the foam body; the rigid coating having a modulus of elasticity of between about 1000 MPa and about 10,000 MPa and a thickness of between about 200 to about 1000 micrometers; and optionally an adhesive layer on the other of the first or second major surfaces of the foam body. In some embodiments, the baseboards have a modulus of elasticity of at least 100 MPa. This ensures that they are sufficiently rigid while remaining hand-cuttable.

Abstract: A maintenance-free respirator 10 that includes a mask harness and a mask body 11. The mask body 11 has at least one layer of filter media 56 and has a perimeter 32 that includes an upper segment 34. The upper segment 34 includes first and second concave segments 36, 38 that are located, respectively, on first and second sides of a central plane 40, when viewing the mask body from a top view. A maintenance-free respirator 10 of this configuration is comfortable to wear and can provide a snug fit to a wearer's face, particularly beneath each of the wearer's eyes, while at the same time having an ability to improve compatibility with various protective eyewear.

Abstract: A method of patterning a conductive layer to form transparent electrical conductors that does not require etching is disclosed. The method includes peeling a strippable polymer layer from a substrate coated with the conductive layer to pattern the conductive layer. In some embodiments, a resist matrix material is patterned over the conductive layer to prevent removal of the conductive layer beneath the resist matrix material. In other embodiments, a liner having a pressure sensitive adhesive surface is brought into contact with the patterned strippable polymer material to remove both the patterned strippable polymer material and the conductive layer beneath it.