Abstract: A heat-curable silicone rubber composition for a rubber laminate composed of a silicone-rubber layer and a rubber layer of a material other than silicone, the composition comprising: an alkenyl-containing diorganopolysiloxane (A) which comprises: 50 to 99 mass % of a diorganopolysiloxane (A1) that contains alkenyl groups, is capped at molecular terminals with alkenyl-containing organosilyl groups, and is free of alkenyl groups in side molecular chains; 1 to 50 mass % of an alkenyl-containing diorganopolysiloxane (A2) having two or more alkenyl groups in a side molecular chain; a fine silica powder (B); an organohydrogenpolysiloxane (C) having in one molecule at least two silicon-bonded hydrogen atoms; and an organic peroxide (D).

Abstract: A method of producing a material capable of electrochemically storing and releasing a large amount of lithium ions is provided. The material is used as an electrode material for a negative electrode, and includes silicon or tin primary particles composed of crystal particles each having a specific diameter and an amorphous surface layer formed of at least a metal oxide, having a specific thickness. Gibbs free energy when the metal oxide is produced by oxidation of a metal is smaller than Gibbs free energy when silicon or tin is oxidized, and the metal oxide has higher thermodynamic stability than silicon oxide or tin oxide. The method of producing the electrode material includes reacting silicon or tin with a metal oxide, reacting a silicon oxide or a tin oxide with a metal, or reacting a silicon compound or a tin compound with a metal compound to react with each other.

Abstract: A back-sheet for a photovoltaic module comprises a fire resistant sheet adhered to a fluoropolymer film. The fire resistant sheet comprises 40 to 100 weight percent of crystallized mineral silicate platelets based on the weight of the fire resistant sheet, and the fire resistant sheet has an average thickness of at least 75 microns, and more preferably at least 100 microns. The crystallized mineral silicate platelets of the fire resistant sheet are selected from the group of mica, vermiculite, clay, talc, and combinations thereof. A photovoltaic module made with such a back-sheet is also disclosed.

Abstract: Coating systems which provide corrosion resistance and, optionally, lubrication, for threaded connections are disclosed. The compositions comprise a first coating composition comprising polymer matrices of polyimides or epoxies which are modified with small amounts of a fluorine containing polymer. Also present in the coating compositions are corrosion inhibiting agents and inorganic particles having a mean diameter of between approximately 10 nm and 10 ?m. Solid lubricants, which may include at least one of PTFE, HDPE, Graphite, and MoS2, are optionally added to provide the first coating with a low coefficient of friction. The coating systems may further comprise a second coating composition, comprising a solid lubricant dispersed within an epoxy resin and a solvent. The first and second coating compositions are deposited on at least a portion of at least one of the pin and box members of the threaded connections.

Abstract: A barrier structure includes a composite film. The composite film includes a polymer matrix and a plurality of dispersed high aspect ratio glass particles within the polymer matrix.

Abstract: A conductive single-sided tape includes a conductive, nonwoven adhesive layer and a metal layer positioned adjacent the conductive, nonwoven adhesive layer. The conductive, nonwoven adhesive layer includes a conductive nonwoven substrate having a plurality of passageways, an adhesive material positioned within at least a portion of the passageways and a plurality of metal particles dispersed within the adhesive material.

Abstract: A coating for a substrate is a cured coating composition which includes binder and particles, wherein the particles are inorganic, organic or organo-metallic; have diameters between about 1 and 500 nm; may be treated with a surface modifer; and wherein the cured coating composition is in direct or indirect contact with the substrate.

Abstract: A back side protective sheet disposed on a back side of a solar cell module and including a first film containing linear low-density polyethylene having a density greater than or equal to 0.91 g/cm3 and less than or equal to 0.93 g/cm3 and an inorganic ultraviolet absorbing agent; and a second film being laminated on the first film, with a urethane adhesive layer being interposed therebetween. An average particle diameter of the inorganic ultraviolet absorbing agent is greater than or equal to 0.1 ?m and less than or equal to 5 ?m. The first film contains the inorganic ultraviolet absorbing agent greater than or equal to 0.1% by mass and less than or equal to 30% by mass.

Abstract: A multilayer barrier structure includes a plurality of relatively thin nanocomposite layers separated by one or more relatively thick intermediate layers selected from synthetic elastomers or non-elastomeric polymers. The composites exhibit remarkably long breakthrough and lag-times and are useful for packaging or protective apparel.

Abstract: A water-repellent substrate having a water-repellent coating film on at least one side of a substrate, wherein the water-repellent coating film comprises an undercoat layer which comprises aggregates of metal oxide fine particles having an average primary particle size of from 20 to 85 nm and a metal oxide binder, and which has a concave-convex surface, formed on the substrate side, and a water-repellent layer formed on the undercoat layer along the concave-convex structure on the surface of the undercoat layer, the water splash property as an index of the water-repellency of the surface of the water-repellent coating film is at least 100 mm, and the water splash property of the surface of the water-repellent coating film is at least 20 mm after an abrasion test for 2,000 reciprocations by means of a traverse tester at a stress of 11.8 N/4 cm2 using a flannel cloth in accordance with JISL0803.

Abstract: An optical film is provided. According to an embodiment, the optical film may include a base material layer, a first layer disposed on the base material layer and having a first oxide and at least one bead, and a second layer disposed on the first layer and having a second oxide and a mineral pigment.

Abstract: A coated article having a substrate coated with a layer of a sulfonate-functional coating, and methods of making and using.

Abstract: Protective coatings are formed on a reflective surface of a substrate by depositing an aqueous coating composition including dispersed silica-containing nanoparticles; and removing at least a portion of the aqueous phase. In some embodiments, the aqueous coating composition includes an acid having a pKa of <3.5 in an amount effective to produce a pH of less than 5. In other embodiments, the aqueous coating composition includes at least one dispersed (co)polymer, which in some embodiments, forms core-shell particle having a dispersed (co)polymer core surrounded by a shell consisting essentially of silica nanoparticles. In some of these embodiments, the pH is at least 5. Also described are methods of making and using the coating compositions to impart soil and stain accumulation resistance and easy cleaning characteristics to light reflective substrates such as construction articles (e.g., roofing materials), light reflective surfaces (e.g. reflective films) and light transmissive surfaces (e.g.

Abstract: An object of the present invention is to provide a transfer film in which the function layer such as an anti-reflective layer can be laminated using a film having high surface tension, and a laminate including a soil resistant layer formed by a wet method and having high water repellency and oil repellency and high transparency, scratch resistance, and sweat resistance can be provided, and a method for producing the transfer film. A transfer film according to the present invention is a transfer film including a transparent base material film and a soil resistant cured film laminated on the surface of the transparent base material film, wherein a water contact angle (1) of a surface of the soil resistant cured film not contacting the transparent base material film is not more than 100°, a water contact angle (2) of a surface of the soil resistant cured film contacting the transparent base material film is not less than 90°, and a contact angle (?) of triolein is not less than 55°.

Abstract: This disclosure relates generally to thermally conductive polymer composites and particularly to thermal interface materials.

Abstract: Coating compositions are disclosed that include corrosion resisting particles such that the coating composition can exhibit corrosion resistance properties. Also disclosed are substrates at least partially coated with a coating deposited from such a composition and multi-component composite coatings, wherein at least one coating later is deposited from such a coating composition. Methods and apparatus for making ultrafine solid particles are also disclosed.

Abstract: The invention seeks to increase the sealing property and the reliability of an electronic device by suppressing cracks, fractures and the like of a glass substrate at the time of laser sealing. A glass substrate 3 has a sealing region. On the sealing region, a sealing material layer 5 comprising a glass material for sealing containing a low-expansion filler and a laser absorbent is provided. The glass material for sealing contains no low-expansion filler particles having particle sizes exceeding the thickness T of the sealing material layer 5 and contains low-expansion filler particles having particle sizes within a range of from 0.5T to 1T based on the thickness T of the sealing material layer 5 in a volume ratio of from 0.1 to 50%. Such a glass substrate 3 and a glass substrate 2 having an element-formed region provided with an electronic element are laminated, and the sealing material layer 5 is irradiated with a laser light 6 and melted to bond the glass substrates 2 and 3.

Abstract: In the composite, an aluminum-plated steel sheet and a resin are securely and integrally joined together. Through chemical etching, the aluminum-plated steel sheet is caused to have a surface configuration, in which three-dimensional protrusions having shapes with a minor diameter of at least 0.3 ?m and a major diameter of at least 3 ?m are scattered over a plain part and a portion covered with shallow fine recesses with a diameter of 20 to 50 nm in a state of being distributed adjacent to each other on the plain part accounts for 30 to 50% of the surface area of the plain part. The surface of the three-dimensional protrusions is mainly ceramic containing silicon and the plain part is mainly ceramic containing aluminum. The resin is joined through injection molding with the aluminum-plated steel sheet having been inserted into a metallic mold.

Abstract: The invention relates to a recording material for electrophotographic printing processes, that comprises a carrier material, a metal coated plastic film and a toner-absorbing layer, and which is suitable for producing images of near-photographic quality using both dry and liquid toners.

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.

Abstract: An insulating coating material includes a polyamide-imide resin insulating coating material, and surface-treated inorganic fine particles dispersed in the polyamide-imide resin insulating coating material. A viscosity measured by an E-type viscometer is 1000 to 4000 mPa·s at 30° C. and at a shear rate of 200 s-1 and 4000 to 12000 mPa·s at 30° C. and at a shear rate of 1 s-1. An insulated wire includes a rectangular conductor, and an insulating layer formed on the rectangular conductor and including the insulating coating material.

Abstract: The present disclosure is directed to a coverlay comprising a polyimide film and an adhesive layer. The polyimide film is composed of a polyimide and a sub-micron filler. The polyimide is derived from at least one aromatic dianhydride component selected from rigid rod dianhydride, non-rigid rod dianhydride and combinations thereof, and at least one aromatic diamine component selected from rigid rod diamine, non-rigid rod diamine and combinations thereof. The mole ratio of dianhydride to diamine is 48-52:52-48 and the ratio of X:Y is 20-80:80-20 where X is the mole percent of rigid rod dianhydride and rigid rod diamine, and Y is the mole percent of non-rigid rod dianhydride and non-rigid rod diamine. The sub-micron filler is less than 550 nanometers in at least one dimension; has an aspect ratio greater than 3:1; is less than the thickness of the film in all dimensions.

Abstract: The present disclosure is directed to a wire wrap composition having a polyimide layer and a bonding layer. The polyimide layer is composed of a polyimide and a sub-micron filler. The polyimide is derived from at least one aromatic dianhydride component selected from rigid rod dianhydride, non-rigid rod dianhydride and combinations thereof, and at least one aromatic diamine component selected from rigid rod diamine, non-rigid rod diamine and combinations thereof. The mole ratio of dianhydride to diamine is 48-52:52-48 and the ratio of X:Y is 20-80:80-20 where X is the mole percent of rigid rod dianhydride and rigid rod diamine, and Y is the mole percent of non-rigid rod dianhydride and non-rigid rod diamine. The sub-micron filler is less than 550 nanometers in at least one dimension; has an aspect ratio greater than 3:1; is less than the thickness of the film in all dimensions.

Abstract: A surface modified substrate includes a substrate having a surface, a layer of nanoscale inorganic oxide particles disposed on at least a portion of the surface of the substrate, said layer of nanoscale inorganic oxide particles comprising sites bearing an electric charge of a first polarity, and a monolayer of a polymer disposed on a least a portion of the layer of nanoscale inorganic oxide particles, said monolayer of polymer comprising sites bearing an electric charge of a second polarity, wherein the second polarity is the opposite of the first polarity.

Abstract: Disclosed is a coating formed from a composition containing a film-forming resin and a plurality of particles dispersed in the resin. The average particle size of the particles is 0.1 to 50 microns, and the particles have a hardness sufficient to impart greater mar and/or scratch resistance to the coating as compared to a coating where no particles are present. Also, the difference between the refractive ranges from 1 to 1.5. A method for preparing a powder coating including the particles also is provided.

Abstract: It is an object of the present invention to provide a coated steel sheet, properties of which such as tape peeling resistance, solvent resistance, alkali resistance and abrasion resistance are improved. A coated steel sheet coated with a composite coat, wherein said composite coat comprises a compounded resin (A) in which polyurethane resin particles (A-1) and ethylene-unsaturated carboxylic acid copolymerization resin particles (A-2), respectively having an average particle diameter of 20 to 100 nm and a silanol group and/or an alkoxysilyl, group, are contained in a mass ratio of 20:80 to 90:10 and silicon oxide particles (A-3) having an average particle diameter of 5 to 20 nm and an organic titanium compound (A-4) are compounded, polyolefin wax particles (B) having an average particle diameter of 0.5 to 4 ?m and a softening point of 100 to 140° C., and silicon oxide particles (C) having an average particle diameter of 70 to 200 nm, and wherein an amount of a coat of said composite coat is 0.5 to 3 g/cm2.

Abstract: The OA roller according to the present invention includes a roller body made of a metal and a coating layer formed on an outside surface of the roller body, while the coating layer is composed by applying a coating material containing binder resin having hardenability, a pigment, amino resin as a crosslinking agent for the binder resin, and attapulgite of not less than 1 part by mass and not more than 8 parts by mass with respect to 100 parts by mass of the binder resin to the outside surface of the roller body and hardening and crosslinking the binder resin.

Abstract: Embodiments of a coated substrate comprise a substrate (100) and a multi-layer multi-functional nanoparticle coating (105) having a thickness of up to about 500 nm thereon. The nanoparticle coating (105) comprises an ionic polyelectrolyte layer (110), and an ionic multi-colloid layer disposed over the polyelectrolyte layer (110). The multi-colloid layer comprises hydrophilic colloid ions (130) disposed over and coupled to the polyelectrolyte layer (110), conductive colloid ions (120) disposed over and coupled to the polyelectrolyte layer (110). The conductive colloid ions (120) are separated from the hydrophilic colloid ions (130) by repulsive forces therebetween.

Abstract: Membranes suitable for microfiltration, ultrafiltration (UF) and nanofiltration (NF) filters are provided. Such membranes may include a nanofibrous scaffold, optionally in combination with a non-woven substrate and/or a coating of a polymer and a functionalized nanofiller. Suitable membranes may also include a coating of a polymer and a functionalized nanofiller on a substrate, which can include a non-woven membrane, a nanofibrous scaffold, or both.

Abstract: Multilayer armor includes an outside armor layer, a first armor layer underneath the outside armor layer, a second armor layer underneath the first armor layer, and a truss layer underneath the second armor layer. In another variation, the multilayer armor includes an outside armor layer, a composite layer underneath the outside armor layer that comprises a plurality of spheres, a second armor layer underneath the composite layer to provide a rigid support to the composite layer, and a third armor layer underneath the second armor layer. The second layer may comprise a composite material that includes a plurality of tightly nested layers in a self-assembling arrangement of spheres made of a high hardness material bonded together using a matrix.

Abstract: A heat ray shielding glass for vehicle, including a glass substrate and a heat ray shielding film formed on at least one surface of the glass substrate, in which the heat ray shielding film includes: conductive oxide ultrafine particles dispersed in the film; and a silica binder for binding the ultrafine particles to each other, the silica binder including solid contents produced by hydrolysis and polycondensation of tetraalkoxysilane and trialkoxysilane.

Abstract: Disclosed is a method for producing a thermoplastic resin film, which comprises oxidizing the surface of a thermoplastic resin film (i) that contains an unsaturated carboxylic acid-modified polyolefin-based resin, then applying a surface modifier thereto, and stretching it. According to the method, thermoplastic resin films can be produced that have good adhesiveness between the film substrate and the coating layer thereof and have good printability and electrostatic resistance.

Abstract: The invention provides a method and system for electrolytically coating an article. The method includes providing an article to be coated and disposing the article in an electrolytic cell. The cell includes an anode, a cathode in operable communication with the article, and an electrolyte bath. During electrolysis, the electrolyte bath comprises cobalt ions, phosphorous acid, and tribological particles selected from the group consisting of refractory materials, solid lubricants and mixtures thereof dispersed therein. The method further includes applying steady direct electric current through the anode, the electrolyte bath and the cathode to coat the article with cobalt, phosphorous and the tribological particles. An improved composition of matter is also provided that may be used as a coating, or the composition may be electroformed on a mandrel to form an article made from the composition of matter.

Abstract: Provided is a glass article that improves the film strength of a photocatalyst film while maintaining the photocatalytic function and the reflection suppressing function of the photocatalyst film. The photocatalyst film on the glass sheet is formed to contain, in mass %, 50 to 82% of silicon oxide particles, 8 to 40% of titanium oxide particles, and 7 to 20% of a binder component composed of silicon oxide. The average particle diameter of the silicon oxide particles is set to at least 5 times the average particle diameter of the titanium oxide particles. The photocatalyst film is formed to have a structure such that some of the silicon oxide particles in the film serve as protruding silicon oxide particles that are not in contact with the glass sheet and that have their top portions protruding from the surrounding titanium oxide particles and being exposed on the surface of the film, while some of the titanium oxide particles are interposed between the glass sheet and the protruding silicon oxide particles.

Abstract: A process belt for papermaking with a long operational life including an integrated structure of a reinforcing fibrous base material and a polyurethane layer is disclosed. The reinforcing fibrous base material is embedded in the polyurethane and the outer peripheral surface and the inner peripheral surface are made of the polyurethane. Nanoparticles including, as a main component, a silicon oxide component, the surface of which is treated with an organic silane coupling agent, are homogeneously dispersed in one part or all of the polyurethane.

Abstract: UV curable coating compositions and methods for applying such compositions to surfaces to provide abrasion resistance and/or structural rigidity thereto. The UV curable compositions of the present invention include at least one curable (meth)acrylate, at least one photoinitiator which absorbs only in the UV range of the electromagnetic spectrum, and an inorganic filler, at least a portion of which having a particle size in the range of 1 to 1,000 nm. The compositions may further comprise a reactive diluent.

Abstract: A decking/flooring system includes a substrate, a layer of sealing material applied over and in contact with a surface of the substrate, a texture layer applied over and in contact with the sealing material layer, an adhesive layer applied over and in contact with the texture layer, and a finish layer. A method for installing the decking/flooring system is also described.

Abstract: The present invention provides a multilayer body, a packaging material and a container, each of which can maintain excellent water repellent properties and non-adhesive properties. Specifically, the present invention describes a non-adhesive multilayer body wherein hydrophobic oxide fine particles having an average primary particle diameter of 3-100 nm adhere to at least a part of the outermost layer.

Abstract: Disclosed is a coating composition for coating polycarbonate substrates. The coating composition comprises (A) at least one radiation-curing binder, (B) nanoparticles, and (C) optionally at least one reactive diluent and/or optionally a solvent, and wherein the nanoparticles (B) comprise silicon dioxide nanoparticles, the silicon dioxide nanoparticles have a d50 of between 80 and 300 nm, and the silicon dioxide nanoparticles have a particle size distribution wherein less than 15% by weight of the particles have a size in the range of less than 80 nm, 75% to 95% by weight of the particles have a size in the range from 80 to 300 nm, 0% to 5% by weight of the particles have a size in the range from more than 300 to 1000 nm, and 0% to 5% by weight of the particles have a size in the range from more than 1000 nm to 10 000 nm.

Abstract: In one embodiment, a method of forming a composite material includes drying organic raw material to remove moisture to less than about 18%. The organic raw material is milled to form organic fiber particles having a size less than about 10 mm. A glue is formed by adding magnesium oxide, magnesium chloride, and water. The glue is mixed with the organic fiber particles to form a slurry. A mold cavity of a mold is filled with the slurry. A pattern is formed by allowing the slurry to set within the mold cavity.

Abstract: The invention relates to a multilayer product containing a first layer (S1) and a second layer (S2). The first layer is a lacquer obtained from A) one or more aliphatic polymer precursors selected from among at least one of the groups comprising components A.1 and A.2, wherein A.1) represents aliphatic oligomers that contain urethane or ester bonds and have at least two acrylate functions per molecule, or mixtures of corresponding oligomers, and A.2) represents aliphatic reactive diluents having at least two acrylate groups per molecule, or mixtures of corresponding reactive diluents, B) one or more fine-particle inorganic compounds, C) at least one organic UV absorber selected from among the group of triazine derivatives and diphenyl triazine derivatives, D) 0.1 to 2 wt.

Abstract: A thermal protection coating, in particular for a turbine-engine part (12), the coating being deposited by thermal spraying onto the surface of the part (12) and including at least 80% by volume of hollow ceramic microbeads distributed in a metal alloy based on nickel or cobalt, it being possible for the coating to be deposited on a bonding layer (22) of metal alloy and for it to be covered in a layer (26) providing protection against erosion or against friction wear, or in a reflective layer that reflects thermal radiation.

Abstract: Provided is a transparent conductive film including a hard coat layer having sufficient hardness, a superior abrasion resistance, and a superior soil resistance; also, provided are an electronic device and a touch panel using the transparent conductive film. A transparent conductive film 10 includes a transparent film base 11, a transparent conductive layer 12, and a hard coat layer 13, wherein the hard coat layer 13 is formed of a composition for forming hard coat containing the component (A): a curable compound including at least one of an acrylate group and a methacrylate group; the component (B): a reactive fluorine-containing compound; and the component (C): a reactive silicon-containing compound.

Abstract: An electric insulation arrangement including a field grading material including a matrix including a dielectric material. A plurality of micro varistor particles is distributed in the matrix. A plurality of bridge particles include an electrically conducting material and form electrically conducting bridges between individual micro varistor particles. The bridge particles form a percolating network together with the micro particles but do not form a percolating network by interconnection between themselves.

Abstract: The present invention provides a transparent electroconductive laminate having a combination of high transparency, small haze and sufficient lubricity; and a transparent touch panel comprising such a transparent electroconductive laminate. The transparent electroconductive laminate of the present invention comprises a transparent organic polymer substrate which has, on at least one surface thereof, a cured resin layer, and a transparent electroconductive layer in this order, and satisfies the following conditions (a) the cured resin layer contains a resin component and first ultrafine particles having an average primary particle diameter of 1 to 100 nm, (b) the resin component and the first ultrafine particles contain the same metal and/or metalloid element, and (c) in the cured resin layer, the content of the first ultrafine particles is from 0.01 to 3 parts by mass per 100 parts by mass of the resin component, and (d) the cured resin layer has a thickness of 0.01 to 2 ?m.

Abstract: The present invention provides an electromagnetic steel sheet having an insulating coating on a surface of the electromagnetic steel sheet, the insulating coating including: a binder solution solid content containing metal phosphate; and a silica or silicate filler having an average particle diameter in a range of 2.0 ?m to 15.0 ?m and an average specific surface area in a range of 1.0 m2/g to 40.0 m2/g, a content of the silica or silicate filler being 1 to 40 parts by mass relative to 100 parts by mass of the binder solution solid content.

Abstract: A primer layer is formed on a plastic lens substrate, a hard coat layer is formed on the primer layer using a coating composition comprising metal oxide fine particles, an organosilicon compound represented by the general formula R1SiX13, and a compound having a biphenyl sulfide compound, and an organic antireflective layer. In the plastic lens comprising a plastic lens substrate as obtained above, a plastic lens having excellent durability, impact resistance and mar resistance, and a method of producing the plastic lens are provided.

Abstract: An article including a substrate, and a base layer formed on a surface of the substrate, and methods for treating the surface of the substrate are provided.

Abstract: An endoscope device is provided, which includes at least two component members bonded together through an adhesive layer which is formed by curing an adhesive composition, the adhesive composition containing a main agent containing a bisphenol A epoxy resin, a phenol novolac epoxy resin, and an acrylic rubber, a curing agent containing xylylenediamine and its derivative, and a filler. The filler is spherical silica having an average particle size of 0.5 to 20 ?m, and accounts for 22 to 44% by mass of a total amount of the adhesive composition.

Abstract: An inexpensive chromate-free black metal sheet not containing the high environmental load hexavalent chromium and extremely excellent in finish (coloring power and concealing power including worked parts), moisture resistance, corrosion resistance, formability, scratch resistance, chemical resistance, etc. The present invention is a chromate-free black-coated metal plate characterized by comprising a metal sheet on at least one surface of which is formed a black coating (?), containing a polyester resin (A1) containing sulfonic acid groups cured by a curing agent (B) and carbon black (C), of a thickness of 2 to 10 ?m.