Abstract: A scratch-and-sniff coating is provided comprised of a first coating on a substrate having a water- and heat-resistant second coating thereon, the first coating being comprised of a non-encapsulated flavor/fragrance component and a polysaccharide component, and the second coating comprised of a shellac component. The scratch-and-sniff coating is made by forming a first coating comprised of a non-encapsulated flavor/fragrance component and a polysaccharide component and drying the first coating, and forming a water- and heat-resistant shellac-containing second coating on the first coating, and drying the second coating. An encapsulated flavor/fragrance component may optionally be present in the first coating. The scratch-and-sniff coating can be applied to a package for a consumer article.

Abstract: A developer nozzle supplies a developer onto the surface of a substrate rotating around a vertical axis, while a pure water nozzle supplies pure water onto the surface of the rotating substrate. The pure water nozzle is spaced apart from the developer nozzle and located on an outer side of the substrate with respect to the developer nozzle. The pure water restricts flow of the developer on the substrate and causes the developer to spread toward a clockwise side of the substrate when the substrate rotates in a clockwise direction. A liquid film containing the developer and the pure water is formed on the substrate. The developer nozzle and the pure water nozzle are spaced apart from each other to suppress splattering of the developer and the pure water due to collision of the developer with the pure water.

Abstract: A process for efficiently forming a thick coating layer having a uniform thickness on the surface of a base material having a curved surface. The process comprises the steps of forming a coating film having a predetermined thickness by applying a coating agent containing a polymerizable monomer on the curved surface of a base material, and then curing the coating film in an atmosphere of an oxygen concentration of not more than 500 ppm by photo-polymerization while substantially maintaining the uniformity of the thickness of the coating film. Preferably, the photo-polymerization of the coating film is carried out while rotating the base material at a rotational speed of from 20 to 1500 rpm.

Abstract: Oxygen gas, for example, is introduced into a film forming chamber, and high-frequency power is supplied to a plurality of monopole antennas arranged above a silicon substrate (101) in the film forming chamber to generate a plasma of the introduced oxygen gas, thereby supplying atomic oxygen (123) onto the surface of an aminosilane molecular layer (102). This plasma generation is performed for about 1 sec. With this operation, the adsorption layer (102) adsorbed onto the surface of the silicon substrate (101) is oxidized, thereby forming a silicon oxide layer (112) corresponding to one atomic layer of silicon on the surface of the silicon substrate (101).

Abstract: A method for depositing a thin film for a magnetic recording medium includes the steps of placing a substrate for a recording medium having a magnetic recording layer thereon on a substrate holder rotatably arranged within a film deposition chamber; and supplying a plasma beam from a plasma beam formation portion to the film deposition chamber so as to form a thin film of ta-C on the magnetic recording layer. In supplying the plasma beam, an inclination angle formed by a normal line to a surface of the magnetic recording layer and a plane orthogonal to a direction of incidence of the plasma beam is changed from a minimum inclination angle to a maximum inclination angle according to an increase in film thickness of the ta-C thin film.

Abstract: A film deposition apparatus which comprises: a processing chamber having a space inside which serves as a vacuum space to which a film deposition gas is supplied; a substrate supporting unit which is disposed in the vacuum space and supports a substrate; a coil which inductively heats the substrate supporting unit to thereby form a film from the film deposition gas on the substrate and which has been divided into regions; and a coil control unit which controls the coil region by region.

Abstract: Providing a liquid crystal composition satisfies at least one of characteristics like a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat or has a suitable balance regarding at least two of the characteristics. Providing an AM device has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition has a negative dielectric anisotropy and contains a specific compound having large negative dielectric anisotropy as a first component, a specific three-ring compound having large optical anisotropy as a second component and a specific two-ring compound having low viscosity as a third component, and a liquid crystal display device contains the composition.

Abstract: A method for fabricating and testing a wafer includes forming metal traces with metal pads, wherein forming the metal traces include forming a TiW layer on a passivation layer and on pads, next forming a seed layer on the TiW layer, next forming a photoresist layer on the seed layer, next forming a metal layer on the seed layer exposed by openings in the photoresist layer, next removing the photoresist layer, next removing the seed layer not under the metal layer, and then etching the TiW layer not under the metal layer with an etchant containing H2O2 at a temperature of between 35 and 50° C., or with an etchant containing H2O2 and with ultrasonic waves applied to the etchant, next contacting probe tips of a probe card with some of the metal pads, next cleaning the probe tips until repeating the step of contacting the probe tips with some of the metal pads at greater than 100 times, and then after cleaning the probe tips, repeating the step of contacting the probe tips with some of the metal pads.

Abstract: A coating composition for forming a glossy, inkjet-receptive coating on a substrate includes (a) a cationic polymer, and (b) colloidal silica having an average particle size in the nanometer range.

Abstract: Electronic devices may have sensitive circuitry. To determine whether an electronic device has been exposed to excessive amounts of moisture, the electronic device may be provided with a moisture indicator. The moisture indicator may have a wicking layer of white paper and a red dye layer. If a portion of the moisture indicator is exposed to moisture, red dye may bleed into the white paper. The moisture indicator may be mounted in an input-output port opening or other portion of the electronic device where the state of the moisture indicator is visible. The moisture indicator may have sealed edges to reduce sensitivity to small amounts of moisture intrusion. Different regions of the moisture indicator may be provided with different sensitivities by forming structures that have altered moisture flow properties, by altering wicking layer thicknesses, or by otherwise spatially modifying moisture sensitivity.

Abstract: A microwave insulating material includes a dimensionally stable support, a patterned adhesive layer overlying at least a portion of the support, a polymer film layer overlying the patterned adhesive layer, and a plurality of expandable cells disposed between the support and the polymer film layer and defined by the patterned adhesive layer, wherein the expandable cells vary in size. A self-sealing microwave package includes a sheet of insulating material including a first surface, and a thermally activatable adhesive applied to at least a portion of the first surface.

Abstract: The present invention relates to multidirectionally reinforced fiber preforms that conform easily to complex curvatures, such as, composite turbine fan cases, jet engine containment rings, aircraft fuselage frames, aircraft window frames, and flanged rings for attaching nacelles to aircraft engines. The present invention provides multidirectionally reinforced shape woven preforms with improved strength for composite structures that are axisymmetric as well as non-axisymmetric in nature. The invention is a preform used to reinforce a composite structure which includes a contour woven fabric portion, bi-axially braided, tri-axially braided or bias fabric portion, and/or a polar woven fabric portion, and a method of making thereof. The preform may optionally include a three-dimensionally woven portion. The combination of different forms of fabrics allows the preform to be produced without cutting and darting of the individual plies.

Abstract: Disclosed is an intrinsically stable shirred, tubular, single-layer or multilayer food casing that preferably has a sigma-5 value (longitudinal/transversal, measured in a moist state) of less than 20/20 N/mm2. Said casing is preferably shirred at a ratio of 100:1 or more, preferably 120:1 to 500:1, and is essentially made of synthetic polymers. The shirred casing can be stored and transported without using a net-type envelope and is particularly suitable for processing on fully automatic sausage stuffing, portioning, clipping, and twisting devices.

Abstract: The use of 3-pyridinol and 5-pyrimidinol derivatives for adjusting the reactivity and the gel time of resin mixtures and/or reactive resin mortars based on radically polymerizable compounds is described. Furthermore, a resin mixture and a reactive resin mortar containing the 3-pyridinol and 5-pyrimidinol derivatives for adjusting the reaction time and the gel time, and having improved storage stability and good low temperature hardening properties, are described.

Abstract: This element (2) is of the type including a hollow elongate body (4) made of metal and having a closed section; and a continuous second body (6) made of plastics material overmolded on the metal first body (4), the plastics material second body (6) including at least two rings (24) surrounding the metal first body (4), the rings (24) being longitudinally spaced part. In any cross-section of the metal first body (4), the plastics material second body (6) is situated entirely outside the outline of the metal first body (4), and the ratio of the axial length of each ring (24) over the longitudinal distance between the rings (24) is less than 1. The invention is applicable to the front faces of motor vehicles.

Abstract: The invention is directed to a multi layer film to be used as a flexible packaging material for enclosing and containing one or more compressible products in a sealed condition. The 5 layer film according to the invention consists of I. a first layer comprising low density polyethylene, II. a second layer comprising high density polyethylene, III. a third layer comprising linear low density polyethylene, IV. a fourth layer comprising high density polyethylene and V. a fifth layer comprising linear low density polyethylene.

Abstract: Disclosed are stabilized blends of polyester and polyamide. The polymer blends are stabilized with A) a combination of stabilizers a) acetaldehyde scavengers and b) stabilizers selected from phenolic antioxidants, organic phosphorus stabilizers and lactone stabilizers or B) a combination of c) lactone stabilizers and d) stabilizers selected from phenolic antioxidants and organic phosphorus stabilizers. The present blends exhibit reduced color formation, a high level of whiteness/brightness and acceptably low haze formation upon heat treatment. The blends are useful to make bottles, containers and films for drinks, food and cosmetics and the like. The polyester is in particular polyethylene terephthalate, PET, and the polyamide is in particular polyamide-MXD6. Heat treatment is for example melt extrusion or solid state polymerization, SSP.

Abstract: A rolled article includes a roll of material and a holding device positioned on the roll and extending across the free end of the roll, securing the free end against an adjacent portion of the roll surface for preventing the roll from unraveling, the holding device including a base article having first and second securing regions positioned adjacent respective opposite sides of the base article and having a linking portion positioned therebetween, the first securing region secured to the roll surface on a first side of the free end and the second securing region secured to the roll on a second side of the free end, and first and second parting features disposed between respective first and second securing regions and the linking portion, wherein the parting features are configured for facilitating parting the base article between the linking portion and the securing regions to unroll the roll.

Abstract: The information recording medium 3 comprises an information layer having a metal layer 5 on a substrate 4, wherein concavo-convex portion is formed in the substrate to give main information such as image and voice, and the metal layer contains Al, Si and M (wherein M is at least one element selected from a group consisting of Cr and Ni) and enables sub-information to be additionally recorded therein at low cost by laser-beam 7 irradiation.

Abstract: Disclosed herein is an improvement for an inseam mechanically attached roofing membrane which includes a body portion, a mechanically fastened edge on one length with a fold line along the body portion and an overlap portion overlying the body portion. Further disclosed herein is a roofing material for a lap type roof system with a reinforced lap edge, which includes the base portion of the roofing material and a secondary portion of material disposed at the edge of the base portion.

Abstract: It is an object of the invention to provide a composite with sufficiently reliable bonding and adequately minimized generation of fluff from flaking resin dust and fibers. This object is achieved by the composite (100) of the invention that comprises a fiber sheet (101) impregnated with a resin composition (102), wherein the 20° C. storage elastic modulus of the cured resin composition (102) is 100-2000 MPa. The composite (100) optionally contains perforations (103).

Abstract: A laminate web having a nonwoven web in facing relationship with a polymer film. The laminate web has a first side comprising the polymer film and a plurality of discrete tufts including fibers integral with and extending from the nonwoven web. Each of the tufts has a tuft base proximal to the nonwoven web and a distal portion opposing the tuft base. At least part of the distal portion of each of the tufts is covered by a cap, each cap being an integral extension of said polymer film extending over the distal portion of a discrete tuft. The cap has a first opening including a location of rupture in the polymer film above which the tuft extends.

Abstract: A vehicle interior material of the present invention is a vehicle interior material that is disposed in a lower side of windshield glass inside a compartment and includes a grain structure including a concavity and a convexity on the upper face thereof, the vehicle interior material including at the convexity of the grain structure, a diffuse reflection face that is inclined with respect to a general upper face of the grain structure.

Abstract: An easily applicable adhesive sheet includes a base sheet and an adhesive layer provided on the base sheet and which includes, in a surface portion thereof, air passages each including a plurality of grooves opening at an end edge portion of the adhesive sheet. Each groove has an opening width of 3 to 100 ?m; the distance between adjacent grooves is 1 to 100 ?m; each air passage has a width of 7 to 900 ?m; and the distance between adjacent air passages is 200 to 3,000 ?m. The easily applicable adhesive sheet can be smoothly applied to an adherend without formation of blisters (i.e., even when air bubbles are formed between the adhesive sheet and the adherend upon application thereof, air is easily released), and which exhibits excellent appearance after application thereof to the adherend.

Abstract: A composite for geotechnics and building, with an impermeable layer, comprising a sheet element that is impermeable to fluids and has, monolithically therewith, elements that protrude on the first and second faces, on at least one of the faces there being a layer that is integrally coupled to the protruding elements to form, at the first and/or second faces, two separate drainage and/or protection and/or grip systems adapted to withstand intense compression along a direction that is substantially perpendicular to the sheet element.

Abstract: The present invention includes a contact medium for use in an evaporative cooler, comprising a corrugated fibrous sheet material comprising at least a top layer and a bottom layer in contact at one or more regions to form at least two channels between the top layer and the bottom layer for air and fluid flow; and a water insoluble thermoplastic compound that impregnates the corrugated fibrous sheet material. The water insoluble thermoplastic compound may have between 1-35 weight percent PVC; 1-20 weight percent PAN; 1-60 weight percent PMA; 1-20 weight percent PAI; and 2-25 weight percent PBA. For example, the composition may have about 2 weight percent PVC; 18 weight percent PAN; 45 weight percent PMA; 15 weight percent PAI; and 20 weight percent PBA.

Abstract: A borderless emblem for securing to a first fabric by heat and/or pressure includes a fabric base, an emblem design applied to a front surface of the fabric base and a layer of thermoplastic adhesive material bonded to a rear surface of the fabric base. The first fabric has a predetermined weave pattern and a predetermined color. The fabric base has an outer peripheral edge and is constructed of the same or substantially the same fabric as the first fabric. The fabric base has a base color that is the same or substantially the same as the predetermined color. The fabric base is cut from a fabric utilizing a laser cutter which heats a portion of the fabric base proximate the outer peripheral edge. The laser cutter finishes the outer peripheral edge of the fabric base without including a stitched or other border.

Abstract: Provided is a multi-layer article comprising an electrically conductive metal layer adheringly contacting the surface of a polymeric composite film less than 500 ?m in thickness, having a surface, the polymeric composite film comprising a polymer and a plurality of surface-modified hexagonal boron nitride particles dispersed therewithin. A process of film casting onto a conductive metal layer is provided.

Abstract: A laminated tape includes: an adhesive material layer; a first polyolefin layer provided on one side of the adhesive material layer; and a second polyolefin layer provided on the other side of the adhesive material layer. The laminated tape is sandwiched between opposing base films of a packaging body to be welded. The polyolefin used for the first polyolefin layer and the second polyolefin layer is of the same type. The thickness of the respective layers of the laminated tape is preferably defined so that the thickness of the first polyolefin layer and the adhesive material layer is 30 ?m or more and the thickness of the second polyolefin layer is less than 30 ?m.

Abstract: A structural color body is film-like and formed of a resin layer containing a block copolymer, the resin layer has a micro-phase separated structure including lamellar micro domains, each of the micro domains has a wave-like shape having amplitudes in the thickness direction of the structural color body, and in each of the micro domains, a maximum value of distances in the direction between the tops of convexities and the bottoms of concavities is larger than the wavelength in the visible light range.

Abstract: A sliding element having a sliding surface, wherein a substrate forming the sliding surface is formed with a resin layer, the resin layer has a plurality of porous parts on its surface, and the porous parts are impregnated with a fluorinated oil. Preferably, the resin layer contains a first resin and a second resin having a melting point higher than that of the first resin, and the porous parts of the resin layer are formed by heating the resin layer at a temperature of at least the melting point of the first resin and less than the melting point of the second resin, and exposed at the surface of the resin layer by grinding the resin layer.

Abstract: A shear panel building material that includes a first facing membrane, a core matrix disposed on a face of the first facing membrane, and a semi-rigid or rigid material attached to the core matrix. The core matrix can include microspheres having a size of about 200 microns to about 800 microns, sodium silicate, and ethylene vinyl acetate. In one aspect, the shear panel is substantially free from glue and cement.

Abstract: The instant invention generally provides polymer organoclay composite comprising a molecularly self-assembling material and an organoclay, and a process of making and an article comprising the polymer organoclay composite. The instant invention also generally provides a fiber comprising the polymer organoclay composite, and a process of fabricating and an article comprising the fiber.

Abstract: The present invention provides a product obtained by a method of dry milling a mineral material in at least one milling unit: (i) in the presence of at least one polyalkylene glycol polymer having monomer units forming a backbone, where at least 90% of the monomer units forming the backbone of the polymer are constituted by ethylene oxide, propylene oxide or their mixtures, and where the polymer has a molecular weight of at least equal to 400 g/mole, and (ii) in a quantity of water that is less than 10% in dry weight of the material in the milling unit.

Abstract: A composite dielectric material having a plurality of particle cores, each surrounded by polymer strands that are chemically bonded to the surface of the particle core. Each polymer strand includes a linker, through which the polymer strand is attached to the surface, an interfacial core-shielding (ICS) group bound to the linker, and a polymer molecule bound to the ICS group. The ICS groups are designed to inhibit electrical breakdown of the composite dielectric material by (i) deflecting or scattering free electrons away from the particle cores and/or (ii) capturing free electrons by being transformed into relatively stable radical anions. Representative examples of the particle core material, linker, ICS group, and polymer molecule are titanium dioxide, a phosphonate group, a halogenated aromatic ring, and a polystyrene molecule, respectively.

Abstract: Coated polyoxymethylene moldings comprising at least one polyoxymethylene homo- or copolymer A), and also, if appropriate, further additives B), which has been coated on the surface with at least one binder C) and one formaldehyde scavenger D), wherein the binder C) used comprises a polyalkylene oxide C1 or a polyvinyl ester C2 or a graft polymer C3 composed of C1 and C2 or a mixture of these, and the formaldehyde scavenger D) used comprises at least one hydrazide compound.

Abstract: The invention is directed toward a method and apparatus which can be used to allow the sputter deposition of material onto at least one article to form a coating on the same. The new form of magnetron described herein allows an increase in sputter deposition rates to be achieved at higher powers and without causing damage to the coating being created. This can be achieved by improved cooling and use of a relatively high magnetic field in the magnetron while at the same time increasing the power to the magnetron by increasing the current at a rate faster than the voltage.

Abstract: A reinforced carbon foam material is formed from carbon fibers incorporated within a carbon foam's structure. First, carbon fiber bundles are combined with a liquid resol resin. The carbon fiber bundles separate into individual carbon fiber filaments and disperse throughout the liquid resol resin. Second, the carbon fiber resin mixture is foamed thus fixing the carbon fibers in a permanent spatial arrangement within the phenolic foam. The foam is then carbonized to create a carbon fiber reinforced foam with improved graphitic characteristics as well as increased strength. Optionally, various additives can be introduced simultaneously with the addition of the carbon fiber bundles into the liquid resol, which can improve the graphitic nature of the final carbon foam material and/or increase the foam's resistance to oxidation.

Abstract: In an embodiment, a polycrystalline diamond compact (“PDC”) comprises a cemented carbide substrate including a first cemented carbide portion and a second cemented carbide portion bonded to the first cemented carbide portion and exhibiting an erosion resistance that is greater than the first cemented carbide portion. The PDC further comprises a polycrystalline diamond (“PCD”) table bonded to the first cemented carbide portion. The PCD table includes a plurality of bonded diamond grains exhibiting diamond-to-diamond bonding therebetween, with the plurality of bonded diamond grains defining a plurality of interstitial regions.

Abstract: Pressure sensitive adhesive formulations of an acrylic polymer grafted with a macromer are particularly well suited for use in the manufacture of impact resistant articles such as impact resistant glass laminates and products comprising such laminates.

Abstract: A sheet which has a substrate layer containing from 21 to 87 mass % of a polycarbonate resin, from 7 to 68 mass % of a polyalkylene terephthalate resin and from 3 to 30 mass % of carbon black, and a surface layer containing from 19 to 86 mass % of a polycarbonate resin, from 6 to 67 mass % of a polyalkylene terephthalate resin and from 5 to 35 mass % of carbon black, laminated on one side or both sides of the substrate layer by extrusion, co-extrusion or extrusion coating, where the sheet has a burr incidence ratio of at most 4%, and a carrier tape using the sheet.

Abstract: A conductive film which is excellent in moist heat resistance, conductivity, transparency and coating film strength. The conductive film comprises a base film and a coating layer formed on the base film by curing a composition comprising: (i) a conducting polymer containing a polycationic polythiophene having a recurring unit represented by the following formula (1) as the main constituent and a polyanion (component A): wherein R1 and R2 are each independently a hydrogen atom or alkyl group having 1 to 4 carbon atoms or bonded together to form an alkylene group having 1 to 12 carbon atoms which may be substituted arbitrarily; (ii) a water-soluble compound having at least one hydrophilic group selected from the group consisting of oxyethylene group and sulfonate group (component B); and (iii) a crosslinking agent having a glycidyl group (component C), and which has a surface resistance change rate after it is treated at a temperature of 60° C. and a humidity of 90% for 240 hours of 160% or less.

Abstract: Provided is a charging member in which the hardness of its surface is increased while surface free energy is kept low, the surface is hard to scratch even in long-term use, and a toner or the like is hard to adhere to the surface. The charging member according to the present invention includes a conductive support, a conductive elastic layer, and a surface region containing a cured material of a compound represented by the following formula (1): wherein n represents an integer of 0-6, m represents an integer of 0-6, the total of n and m is from 2 to 6, x and y each independently represent an integer of 0-4, and R1 and R2 each independently represent a hydrogen atom or a methyl group.

Abstract: The method of manufacturing shoes of the present invention comprises a pre-step of heating a following reactive hot-melt adhesive to melt it and providing the melted adhesive on a joining surface of at least one adherend, an ultraviolet treating step of irradiating the adhesive with ultraviolet light having irradiation energy more than 100 mJ/cm2 and less than 1200 mJ/cm2 to polymerize a polyurethane prepolymer, and a joining step of overlaying a joining surface of another adherend on the adhesive to bond both adherends together. The reactive hot-melt adhesive contains a polyurethane prepolymer having an (meth)acryloyl group and an isocyanate group at the end of a molecule, and a photopolymerization initiator. The polyurethane prepolymer includes a non-crystalline polyol and a crystalline polyol, wherein the non-crystalline polyol is contained from 20% by mass to 90% by mass with respect to the whole polyols. The viscosity of the reactive hot-melt adhesive at 80° C. is 300 Pa·s or less.

Abstract: Crosslinked polymers, methods for their preparation and use, are described in which the crosslinked polymers are formed from at least two polymer precursors, one of which is designed, upon degradation of the crosslinked polymer, to release the second polymer precursor in its original, unmodified chemical form.

Abstract: The general field of the invention is that of airbags. The invention relates to a process for improving the tear strength and the combing strength of coated fabrics intended for uses in the field of inflatable bags using a silicone composition comprising an additive containing a polyorganosiloxane resin (V) and a calcium carbonate. After coating the composition onto the fabric supports and curing, the coated supports not only have optimum adhesion and crease resistance properties, but also have good properties in terms of combing strength and tear strength.

Abstract: A curable composition contains (A) a polyorganosiloxane base polymer having an average per molecule of at least two aliphatically unsaturated organic groups, optionally (B) a crosslinker having an average per molecule of at least two silicon bonded hydrogen atoms, (C) a catalyst, (D) a thermally conductive filler, and (E) an organic plasticizer. The composition can cure to form a thermally conductive silicone gel or rubber. The thermally conductive silicone rubber is useful as a thermal interface material, in both TIM1 and TIM2 applications. The curable composition may be wet dispensed and then cured in situ in an (opto)electronic device, or the curable composition may be cured to form a pad with or without a support before installation in an (opto)electronic device.

Abstract: Disclosed herein is a crosslinkable thermoset monomer. The crosslinkable thermoset monomer has acetylene groups as crosslinking groups introduced at both ends of the backbone. Also disclosed herein is a composition for producing a printed circuit board which comprises the crosslinkable thermoset monomer. The composition exhibits excellent mechanical and thermal properties. Therefore, the composition can be used as a material for next-generation boards that are becoming lighter in weight and smaller in size and thickness. Also disclosed herein is a printed circuit board using the composition.

Abstract: The present disclosure is directed to cutting tools. The disclosed cutting tools may have a wear resistant coating on a substrate. The substrate may have hard particles cemented in a binder phase. The binder may have a near-surface concentration gradient of at least one platinum group element and/or rhenium. Processes for producing cutting tools are also disclosed.

Abstract: The present disclosure is directed to a base film having a thickness from 8 to 152 microns, a 60 degree gloss value from 2 to 35, an optical density greater than or equal to 2 and a dielectric strength greater than 1400 V/mil. The base film comprises a chemically converted (partially or wholly aromatic) polyimide in an amount from 71 to 96 weight percent of the base film. The base film further comprises a pigment and a matting agent. The matting agent is present in an amount from 1.6 to 10 weight percent of the base film, has a median particle size from 1.3 to 10 microns, and has a density from 2 to 4.5 g/cc. The pigment is present in an amount from 2 to 9 weight percent of the base film. The present disclosure is also directed to coverlay films comprising the base film in combination with an adhesive layer.