Abstract: A unitary optical film stack comprising a light redirecting film assembly; a light diffusion film assembly; and an optical adhesive; wherein the light redirecting film assembly and the light diffusion film assembly are physically coupled non-continuously to minimize optical coupling.

Abstract: A dental article includes at least one segment defining a complex three-dimensional shape configured to follow contours of an oral anatomy, in which the at least one segment includes a core component including a majority of parylene.

Abstract: A method for manufacturing a sheet laminate to be affixed to an adherent surface of an object, the method comprising preparing a sheet member having a front surface to become a design surface and a rear surface on which an adhesive part has been formed, bending an edge part of the sheet member by sandwiching the sheet member from a front surface side and a rear surface side in a mold, and heating a part of a bent sheet member. The sheet laminate has a flat part spreading out in a flat plate shape, a side surface on which the edge part bent by the bending step is configured, and a connecting surface protruding and curving toward the front surface side between the flat part and the side surface, and in the heating step, the connecting surface is partially heated after the side surface is molded in the bending step.

Abstract: Methods for making a microstructured tool having interspersed topographies are disclosed, and the production of articles therefrom. The article has a major surface including first microstructural features and second microstructural features arranged in a pattern visible at least when viewed normal to the first major surface. The first and second microstructural features are different relative to each other, and are selected from the group consisting of cones, diffraction gratings, lenticulars, segments of a sphere, pyramids, cylinders, fresnels, and prisms.

Abstract: A fluoropolymer coating composition is described comprising an aqueous liquid medium, fluoropolymer particles dispersed in the aqueous liquid medium, and at least one aziridine compound. The aziridine compound comprises at least two aziridine groups (i.e. polyaziridine) or at least one aziridine group and at least one alkoxy silane group. In another embodiment, an article is described comprising a substrate wherein a surface of the substrate comprises a coating comprising fluoropolymer particles; and a reaction product of at least one aziridine compound comprising at least two aziridine groups or at least one aziridine group and at least one alkoxy silane group. The coating can be utilized as a primer for bonding a non-fluorinated substrate to a fluoropolymer film and/or the coating can be used as an (e.g. outer exposed) surface layer. In some embodiments, the article may be the (e.g. backside) film of a photovoltaic module.

Abstract: An electroplated article is provided comprising a polymeric substrate bearing an electroplated metal layer comprising copper and tin in an atomic ratio of less than 96:4, in some embodiments less than 87:13 and in some embodiments less than 82:18; wherein the atomic ratio of copper to tin is greater than 55:45, and wherein the electroplated metal layer comprises at least 3.5 weight % tin. The electroplated metal layer comprises an alloy having a melting point of less than 1050° C. and in some cases less than 800° C. The electroplated metal layer has a Young's Modulus of less than 15.0 GPa, in some embodiments less than 13.0 GPa, and in some less than 10.0 GPa. In addition, an electroplating solution is provided comprising Cu(II) ions, Sn (II) ions, Zn(II) ions, 1-methionine, and no cyanide anion.

Abstract: The present invention provides a mat comprising a layer having a mixture of long and short fibers wherein said short fibers have a length of not more than about 13 mm and wherein said long fibers have a length of at least about 20 mm and wherein the amount of said short fibers is at least about 3% by weight based on the total weight of said mixture of long and short fibers.

Abstract: The present disclosure provides a polymeric material including a reaction product of a polymerizable composition and having a solids content of 90% or greater. The polymerizable composition includes a uretdione-containing material including a reaction product of a diisocyanate reacted with itself, a first hydroxyl-containing compound having a single OH group, and a second hydroxyl-containing compound having more than one OH group. The first hydroxyl-containing compound is a primary alcohol or a secondary alcohol, plus the second hydroxyl-containing compound is a diol and the reaction product contains 0.2 to 0.5, inclusive, of diol equivalents relative to isocyanate equivalents. The present disclosure also provides a two-part composition, in which the polymeric material is included in the first part and the second part includes at least one amine.

Abstract: Transfer tapes include a releasing substrate and an adhesive layer adjacent to the surface of the releasing substrate. The adhesive layer includes a cured copolymer prepared from a reaction mixture that includes at least one alkyl (meth)acrylate, at least one ethylenically unsaturated silane, and an initiator. The adhesive layer is a pressure sensitive adhesive at room temperature and is convertible into a ceramic-like layer by bake-out at a temperature of from 170-500°.

Abstract: A method includes combining first components including at least one of CF2?CF—CF2—OSO2Cl or CF2?CF—CF2—OSO2CF3, a polyfluorinated compound having at least one ketone or carboxylic acid halide, and fluoride ion to provide a compound comprising at least one perfluorinated allyl ether group. A method includes combining second components including B(OSO2Cl)3 and hexafluoropropylene to provide CF2?CF—CF2—OSO2Cl. Another method includes combining second components including M(OSO2CF3)3 and hexafluoropropylene at a temperature above 0° C. to provide CF2?CF—CF2—OSO2CF3, wherein M is Al or B. The compound CF2?CF—CF2—OSO2Cl is also provided.

Abstract: In some examples, a system includes: at least one light capture device; an article of personal protective equipment (PPE) that includes a plurality of retroreflective elements embodied on a surface of the article of PPE in a spatially defined arrangement, each retroreflective element of the plurality of retroreflective elements having at least two different retroreflective properties; a computing device communicatively coupled to the at least one light capture device, wherein the computing device is configured to: receive, from the at least one light capture device, retroreflected light that indicates at least two different retroreflective properties of at least one retroreflective element of the plurality of retroreflective elements; determine, based at least in part on each of the at least two different retroreflective properties, a safety event; and perform at least one operation based at least in part on the safety event.

Abstract: The present disclosure provides a resin blend. The resin blend includes at least one diluent containing a single phthalonitrile functional group and at least one diphthalonitrile resin. Also provided are prepregs including the resin blend impregnated into continuous reinforcing fibers or a cloth. Similarly, the present disclosure provides a molding compound including chopped reinforcing fibers distributed in the resin blend. An article is also provided, which includes polymerization product of the resin blend. An alternative article includes a substrate and a layer of the resin blend disposed on the substrate. The diluent typically improves processability of the resin blend and lowers the softening temperature of the polymerization product of the resin blend.

Abstract: Transfer tapes include a releasing substrate and an adhesive layer adjacent to the surface of the releasing substrate. The adhesive layer includes a at least one siloxane-based copolymer, and at least one siloxane tackifying resin. The adhesive layer is a pressure sensitive adhesive at room temperature and is convertible into a ceramic-like layer by bake-out at a temperature of from 100-500°.

Abstract: Dual-sided adhesive articles include a first crosslinked pressure sensitive adhesive layer with a first major surface and a second major surface, a second siloxane-based pressure sensitive adhesive layer with a first major surface and a second major surface, such that the first major surface of the second siloxane-based pressure sensitive adhesive layer is in contact with the second major surface of the first crosslinked pressure sensitive adhesive layer. The articles also include a release liner having a microstructured surface with an array of microstructures, where the microstructured surface is in contact with the second major surface of the second siloxane-based pressure sensitive adhesive layer. The microstructures of the microstructured surface of the second siloxane-based pressure sensitive adhesive layer are unstable when not in contact with the microstructured release liner, and disappear over time when in contact with a substrate.

Abstract: The disclosed retroreflective element includes a polymeric core that is loaded with a plurality of first beads and second beads distributed at the perimeter of the core. The first beads are different than the second beads. Because of the beads in the core, the retroreflective element remains useful for returning light even after portions of the core begins to wear away. Further, when the retroreflective elements get wet, water will settle to the bottom of the perimeter of the core. Therefore, using the second beads with a refractive index suited for wet conditions, while the first beads have a refractive index suited for dry conditions allows the retroreflective element to be useful in both wet and dry conditions even while the retroreflective element wears during use.

Abstract: Voltage divider assembly (1) for installation on a power conductor (100) inside a MV/HV switchgear in a power network of a national grid, operable to divide a voltage of the power conductor in a voltage-dividing sensor for sensing a voltage of the power conductor. The voltage divider assembly comprises a) conductive connecting means (180) for mechanically and electrically connecting the voltage divider assembly to the power conductor (100); and b) discrete impedance elements, electrically connected with the connecting means and in series with each other such as to be operable as a high-voltage side of the voltage-dividing sensor.

Abstract: A unitary lightguide including a first lightguide section extending along a first direction and a second lightguide section extending along a second direction is described. The second lightguide section includes a plurality of light extractors for extracting light that would otherwise propagate within and along the second lightguide section. The unitary lightguide includes a boundary region disposed between and joining the first and second lightguide sections and including a plurality of spaced apart light redirecting features. Each light redirecting feature includes a first portion extending substantially parallel to the first direction, and a second portion extending from proximate the first end of the first portion toward the second lightguide section and making an angle with the first portion in a range from about 10 degrees to about 70 degrees.

Abstract: There is provided a composite article comprising a composite material comprising 60 wt % to 98 wt % of a hydrolytically stable thermoplastic resin; and 1 wt % to 11 wt % long conductive metal fibers coated with a polymer selected from at least one of aromatic polycarbonates, aromatic polycarbonate alloys, aromatic polyethers, maleated polyolefins, semi-aromatic nylons, stabilized nylons, and combinations thereof.