To provide a cationic electrodeposition coating composition manifesting excellent anticorrosive property at edges and in flat areas, along with finish quality, even in a state of thin film, as well as a coated article demonstrating these excellent coating film performances, the cationic electrodeposition coating composition includes an amino group-containing epoxy resin (A), a blocked polyisocyanate compound (B), and crosslinked epoxy resin particles (C), wherein the crosslinked epoxy resin particles (C) are contained by 0.1 to 40 parts by mass relative to the total mass in solids content of the amino group-containing epoxy resin (A) and blocked polyisocyanate compound (B); the number-average molecular weight of the crosslinked epoxy resin particles (C) is under 100,000; and/or the volume-average particle size of the crosslinked epoxy resin particles (C) is 30 to 1,000 nm.

The present disclosure discloses a continuous electrophoretic deposition modified carbon fiber reinforced multi-matrix composite and a preparation method thereof, composing of a carbon fiber with a volume fraction of 30-55%, an inorganic powder with a volume fraction of 3-25% and a matrix with a volume fraction of 20-67%, wherein the inorganic powder is wrapped on the surface of the carbon fiber filament or embedded in the carbon fiber bundle, and the concentration gradually decreases from the fiber filament to the surface of the fiber bundle. The preparation method of the composite is as follows: (1) pretreating the carbon fibers; (2) preparing a slurry of the inorganic powder; (3) widening the pretreated carbon fiber to form a carbon fiber strip, and then carrying out electrophoretic deposition on the inorganic powders; (4) preparing a preform from the deposited carbon fibers; and (5) compounding a matrix in the preform.

Oil well pipe component comprising a threaded portion, at least part whereof is coated with a layer of a corrosion-inhibiting material, that has been applied to at least the part of the threaded portion of the oil well pipe component by means of a method comprising a cataphoresis step from an aqueous bath, said method comprising providing the oil well pipe component comprising a threaded portion; immersing at least part of the threaded portion of the pipe component in a cataphoresis bath comprising water and suspended particles of corrosion-inhibiting material, and provided with an anode and a cathode means, the pipe component being connected to the cathode means; inducing a current through the bath, in order to provide the corrosion-inhibiting material with a positive charge; depositing a layer of the positively charged corrosion-inhibiting material onto the pipe component; and removing the immersed part of the pipe component with the layer of corrosion-inhibiting material from the cataphoresis bath and allowing the corrosion-inhibiting material to set.

Oil well pipe component comprising a threaded portion, at least part whereof is coated with a layer of a corrosion-inhibiting material, that has been applied to at least the part of the threaded portion of the oil well pipe component by means of a method comprising a cataphoresis step from an aqueous bath, said method comprising providing the oil well pipe component comprising a threaded portion; immersing at least part of the threaded portion of the pipe component in a cataphoresis bath comprising water and suspended particles of corrosion-inhibiting material, and provided with an anode and a cathode means, the pipe component being connected to the cathode means; inducing a current through the bath, in order to provide the corrosion-inhibiting material with a positive charge; depositing a layer of the positively charged corrosion-inhibiting material onto the pipe component; and removing the immersed part of the pipe component with the layer of corrosion-inhibiting material from the cataphoresis bath and allowing the corrosion-inhibiting material to set.

A method for forming an enzymatic biosensor includes preparing a first deposition solution comprising an enzyme, placing a substrate in the first deposition solution, applying an electrical potential to a working electrode of the substrate to deposit the enzyme on the working electrode, placing the substrate in a second deposition solution comprising electro-polymerizable monomers, and passing a current through the working electrode to polymerize the monomers to form an electropolymerized polymer layer over the enzyme deposited on the working electrode.

Described herein is an aqueous coating composition (A) for at least partly coating an electrically conductive substrate with an electrocoat material, including (A1) at least one cathodically depositable resin binder, (A2) at least one crosslinking agent, (A3) at least 100 ppm of bismuth, based on the total weight of the coating composition (A), and (A4) lithium, in a form dissolved in (A), the lithium not exceeding a fraction of 300 ppm, based on the total weight of the coating composition (A). Also described herein are a method for producing (A), a coating method, and an at least partly coated substrate obtainable by the method.

The present invention is directed to a method for preparing a coated optical article including providing a non-conductive substrate; forming a conductive coating layer over the substrate; electrodepositing a first electrodepositable coating composition over the conductive coating layer to form a first electrodeposited inorganic coating layer; and electrodepositing a second electrodepositable coating composition over the first electrodeposited coating layer to form a second electrodeposited inorganic coating layer thereover, thereby forming a multi-layer antireflective inorganic coating over the conductive coating layer. Each of the first electrodepositable coating composition and the second electrodepositable coating composition is different one from the other, and each includes a sol prepared from a composition of a metal oxide precursor and protic acid such that each coating composition is hydrolyzed. Coated optical articles are also provided.

A coated metal alloy substrate with at least one chamfered edge, a process for producing a coated metal alloy substrate, and an electronic device having a housing comprising a coated metal alloy substrate are described. The coated metal alloy substrate with at least 10 one chamfered edge comprises a water transfer print layer deposited on the metal alloy substrate, a passivation layer deposited on the at least one chamfered edge, and an electrophoretic deposition layer deposited on the passivation layer.

Examples of an alloy injection molded liquid metal substrate are described. In an example, an alloy injection molded liquid metal substrate includes a liquid metal substrate and an alloy injection molded on a first surface of the liquid metal substrate.

Examples of an alloy injection molded liquid metal substrate are described. In an example, an alloy injection molded liquid metal substrate includes a liquid metal substrate and an alloy injection molded on a first surface of the liquid metal substrate.