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    • 3. 发明公开
    • POLYAMIDE COMPOSITION FOR LED REFLECTION PLATE, LED REFLECTION PLATE, AND LIGHT-EMITTING DEVICE INCLUDING REFLECTION PLATE
    • 用于LED反射板,LED反射板和发光器件的聚酰胺组合物,包括反射板
    • EP3315556A1
    • 2018-05-02
    • EP16817932.3
    • 2016-06-28
    • Kuraray Co., Ltd.
    • KANAI, ShimonOYA, NobuhiroSHIGEMATSU, Takaharu
    • C08L77/06C08K3/22C08K5/13C08K5/134C08K5/52G02B5/08H01L33/60
    • C08K3/22C08K5/13C08K5/134C08K5/52C08L77/06G02B5/08H01L33/60
    • There is provided a polyamide composition for an LED reflection plate, including a polyamide (A), a titanium oxide (B), a magnesium oxide (C), a phenolic antioxidant (D), and a phosphorus-containing antioxidant (E), wherein the polyamide (A) is a polyamide having a dicarboxylic acid unit comprising 50% by mol or more of terephthalic acid unit and a diamine unit and having a melting point of 280°C or higher; the phenolic antioxidant (D) does not have 4 or more phenol structures in its molecule; wherein the content of the titanium oxide (B) is 10 to 100 parts by mass, the content of the magnesium oxide (C) is 0.50 to 15.0 parts by mass, and the content of the phenolic antioxidant (D) is 0.10 to 0.80 part by mass, with respect to 100 parts by mass of the polyamide (A); and the content of the phosphorus-containing antioxidant (E) satisfies the following expression (I): 0.25 ≤ mass ratio D component / E component ≤ 3.0 There are also provided a reflection plate obtained by molding the composition, and a light-emitting device having the reflection plate.
    • 本发明提供一种聚酰胺(A),氧化钛(B),氧化镁(C),酚类抗氧化剂(D)和含磷抗氧化剂(E)的LED反射板用聚酰胺组合物, 其中,所述聚酰胺(A)为具有二羧酸单元的聚酰胺,所述二羧酸单元包含50摩尔%以上的对苯二甲酸单元和二胺单元且熔点为280℃以上; 酚类抗氧化剂(D)在其分子中不具有4个或更多个酚结构; 其中,氧化钛(B)的含量为10〜100质量份,氧化镁(C)的含量为0.50〜15.0质量份,酚类抗氧化剂(D)的含量为0.10〜0.80份 相对于聚酰胺(A)100质量份, (E)的含量满足下述式(I):0.25≤质量比D成分/ E成分≤3.0另外,还提供将该组合物成型而得到的反射板和具有该含磷抗氧化剂 反射板。