Foreign Coating Patent Express

China Coatings Online News
(1) U.S. FM has introduced a wear-resistant polymer coating and application on connecting rods (U.S. Patent No. US2016 123 381). The polymer coating is suitable for the thrust surface and the wall surface of the connecting rod structure to improve its wear resistance. The wear-resistant coating contains polymer substituts such as polyamide (PAI), solid lubricants, hard particles, etc., which can be coated using spraying or roller coating processes. The coating has excellent adhesion to the metal surface, while improving the lubrication performance of the metal surface. For example, applying the coating to the surface of the internal combustion engine connecting rod structure enables the piston and crankshaft to run with less friction and less wear, thus improving the smooth running effect, while greatly reducing the risk of damage to the engine caused by metal debris due to wear, and improving the service life of the connecting rod and engine.(2) Japan's Libang Coatings has introduced a method for the preparation of electrophoretic coating compositions and their coatings with excellent corrosion resistance (Japan Patent Public No.: JP2016 33 238). The preparation method of the electrophoresis coating film includes: (i) immersing at least some high-strength steel plates and unchemically treated products into the electrophoresis coating composition, applying a suitable voltage to make the coating film, and (ii) heating and curing the electrophoresis coating film. The pH of the electrophoretic coating composition is 4.5 to 7 and contains: (A) a composite metal compound consisting of zinc compounds and vanadium compounds, (B) a amine resin, (C) a closed isocyanate curing agent, (D) a metal nitrite, and (E) an aminosilane compound. For example, 20 servings of zinc methyl sulfonate, 1.1 servings of niobium fluoric acid, 6.7 servings of KBE903 (3-aminopropyl triethyloxysilane), 1.3 servings of calcium nitrite, 833 copies Electrophoretic coating resin emulsion (EmA) (modified epoxy resin by amined cation, 1,6-hexamethyl isocyanate-2-butylone-2-(hydroxymethyl)-1,3-propylene glycol Co-polymer, ε-hexylamide-sealed MDI (closed isocyanate curing agent), 122 pigment dispersion slurry mixed evenly, insulation at 40 degrees C 16 h, the pH of 5.8 Electrophoretic coating composition, after dipping cold-rolled steel plate into the above electrophoretic coating composition 2 min, add 2-ethyl hethyl glycol, then apply 180 V voltage, and finally at 160 degrees C thermo cure 15 min, to make electrophoretic coating film.(3) Alantas PDG Co., Ltd. of the United States has introduced a well-stable method for the preparation of unsaturated polyester emulsions and their coatings (US Patent No. US2016 104 556). The patent relates to a method to reduce the viscosity of electrophoresis coating construction, or to reduce the monosome content of electrophoresis coating while reducing the construction viscosity. Electrophoretic coatings contain: (a1) unsaturated polyester or its mixture, (a2) water, (b) at least one free-based polymerizer or promoter mixture, (c) at least one surfactant, (d) at least one active diluent (optional), (e) additive (optional) and other components. The patent also deals with the coating method for applying the electrophoresis coating to electromechanical equipment or electronic products.(4) The Solvay Group of Belgium has introduced a transparent conductive coating coating composition and its application (International Patent Application No.: WO2016 71 484). The composition contains at least one carbon nanotube, at least one dispersant, at least one silicone monosome or adhesive, at least one solvent, etc. Among them, the aqueous solution pH containing 1% < 5. The patent also relates to the preparation method of conductive coating compositions: preparation of carbon nanotube dispersions, pH<5; The composition is suitable for the preparation of transparent conductive coatings, especially for transparent electrodes, anti-static coatings, display electromagnetic interference shields, etc.(5) Asahi Corporation of Japan has introduced a low-viscosity polychyanate composition with excellent storage stability, adhesion and construction properties and the preparation of its coating film (Jp 2016 53 127). The polycycyanate composition is produced by a four-body fatty family of isocyanates consisting of 1,6-hethocyanate, isocyanate-based, isocyanate-demero-based and isocyanate-isocyanate-disophate- The ratio of diocyanate dimericate to isocyanate-based substances is 0.02 to 0.5, and the ratio of peak area in liquid chromatography is 0.01 to 0.1. For example, 6,000 g of hexamethyl diocyanate and 7 g of isobutanol (the isocyanate reaction catalyst trimethyl-2-methyl-2-hydroxyethyl hydroxyethyl hydroxide is dissolved in isobutanol) were stirred at 150 degrees C to produce a polysethyl cyanate composition; Setalux 1903 (acrylic polyol) and the above-mentioned polychloride composition were mixed evenly to produce the coating composition, and the coating composition was coated on a soft steel plate coated with acrylic polyols and solidified at 90 degrees C for excellent adhesion.
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