POWDER COATING, AND ELECTRIC/ELECTRONIC COMPONENT

To provide a powder coating composed of a thermosetting composition, which can form a cured product having high flame retardancy, while preventing a decline of flowability during melting.SOLUTION: A powder coating of the present invention is to form a cured product having a flame retardancy conformi...

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Bibliographische Detailangaben
Hauptverfasser: ABE AKIRA, SASAKI FUMIYUKI, YAJIMA TSUNENARI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a powder coating composed of a thermosetting composition, which can form a cured product having high flame retardancy, while preventing a decline of flowability during melting.SOLUTION: A powder coating of the present invention is to form a cured product having a flame retardancy conforming to the UL94 V-0 standard. The powder coating is composed of a pulverized product of a thermosetting composition. The thermosetting composition comprises (A): a thermosetting compound, (B): a curing agent reactable with (A), (C): an organic flame retardant and (D): a flame-retardant aid. The (C) contains 90 mass% or more of (C1): a phosphate-containing compound and (C2): a phosphinate-containing compound but is free of (C3): a phosphorus compound compatible with a mixture of (A) and (B), with a mass ratio of (C2) to (C1) :1 being 0.2 to 0.8. The (D) contains 90 mass% or more of (D1): yellow iron oxide, with a mass ratio of (D1) to (C1):1 being 0.5 to 1.5.SELECTED DRAWING: None 【課題】 溶融時の流れ性低下を抑制しつつ、高い難燃性が付与された硬化物を形成しうる、熱硬化性組成物からなる粉体塗料を提供する。【解決手段】 本発明に係る粉体塗料は、UL94V-0規格に適合する難燃性を備えた硬化物を形成するための塗料であって、熱硬化性組成物の微粉砕物で構成してあり、熱硬化性組成物は、(A):熱硬化性化合物、(B):(A)と反応する硬化剤、(C):有機系難燃剤および(D):難燃助剤を含み、(C)は、(C1):リン酸塩含有化合物および(C2):ホスフィン酸塩含有化合物を90質量%以上含むが、(C3):(A)と(B)の混合物に相溶するリン化合物を含まず、(C1):1に対する(C2)の質量比が0.2以上0.8以下であり、(D)は、(D1):黄色酸化鉄を90質量%以上含み、(C2):1に対する(D1)の質量比が0.5以上1.5以下である、ことを特徴とする。【選択図】 なし