POWDER COATING MATERIAL AND COATED ARTICLE OF THE POWDER COATING MATERIAL

• Main Authors: SUZUKI KOTARO, SEKI RYOICHI, MURATA SUSUMU
• Format: Patent
• Language: English; Japanese
• Published: 15.07.2021
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, ORMANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR; TRANSPORTING; USE OF MATERIALS THEREFOR; VEHICLES IN GENERAL; WOODSTAINS

To provide a powder coating material which enables formation of a coated film having a small coefficient of dynamic friction and a small gross, and having good appearance.SOLUTION: A powder coating material (X) contains polyolefin resin particles (A) satisfying the following requirements (I) to (III), and satisfies the following requirement (X1). (I) A particle diameter d50 with a cumulative volume of 50% measured according to JIS Z 8827-1:2008 is 2-20 μm. (II) A particle diameter d90 with a cumulative volume of 90% measured according to JIS Z 8827-1:2008 is 5-25 μm. (III) A gel fraction is 0% or more and less than 60%. (X1) An amount of a component eluted in a super supernatant liquid which is obtained by stirring 5 g of the powder coating material (X) at 80°C for 30 minutes in 30 ml of methyl isobutyl ketone is 0-2.0 mass% with respect to 100 mass% of the powder coating material (X).SELECTED DRAWING: None 【課題】動摩擦係数およびグロスが小さく、外観が良好である塗膜を形成可能な粉体塗料を提供すること。【解決手段】下記要件（Ｉ）〜（ＩＩＩ）を満たすポリオレフィン樹脂粒子（Ａ）を含有し、下記要件（Ｘ１）を満たす粉体塗料（Ｘ）。（Ｉ）ＪＩＳ Ｚ ８８２７−１：２００８に準じて測定される、累積体積が５０％となる粒子径ｄ５０が２〜２０μｍ（ＩＩ）ＪＩＳ Ｚ ８８２７−１：２００８に準じて測定される、累積体積が９０％となる粒子径ｄ９０が５〜２５μｍ（ＩＩＩ）ゲル分率が０％以上６０％未満（Ｘ１）粉体塗料（Ｘ）５ｇをメチルイソブチルケトン３０ｍｌ中、８０℃で３０分間攪拌することで得られた上澄み液に溶出した成分量が、粉体塗料（Ｘ）１００質量％に対し、０〜２．０質量％である【選択図】なし