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    A POLYMERIC COMPOSITE MATERIAL WITH IMPROVED FLAME RESISTANCE
    75.
    发明公开
    A POLYMERIC COMPOSITE MATERIAL WITH IMPROVED FLAME RESISTANCE 失效
    具有改善的耐火性高分子复合材料

    公开(公告)号：EP0983316A1

    公开(公告)日：2000-03-08

    申请号：EP97919873.6

    申请日：1997-04-17

    Applicant: DUSLO, a.s. SALA

    Inventor： SKUBLA, Pavol ,  KRAJCI, Pavel ,  GABARIK, Milan ,  LENCSES, Ladislav

    IPC: C08K9/00 ,  C01F5/14

    CPC classification number: C01F5/14 ,  C01P2002/60 ,  C01P2004/50 ,  C01P2004/61 ,  C01P2006/12 ,  C01P2006/90 ,  C08K9/04 ,  C08K2201/003 ,  C08K2201/006 ,  C09C1/028

    Abstract: A polymeric composite material with improved flame resistance contains 25 to 75 parts by weight, preferably 35 to 60 parts by weight of a thermoplastic substance (based on 100 parts by weight of the polymeric composite material), and 75 to 25 parts by weight, preferably 65 to 40 parts by weight of magnesium hydroxide (based on 100 parts by weight of the polymeric composite material) the surface of which is treated by a surface active agent and/or which is uniformly intermixed with a surface active agent. The magnesium hydroxide consists of agglomerates of crystals having all particles with diameters less than 4.0 νm, 50 % of particles with diameters less than 1.4 νm, and a specific surface, determined by the BET-method, less than 25 m2/g. The magnesium hydroxide is a powdered crystalline product with the crystal size, as determined by Xray powder diffraction method, in the ∫004⊃ direction greater than 150 Å and less than 500 Å, the aspect ratio having a value in the range of 2 to 5, strain in the ∫004⊃ direction being not more than 4.2 x 10-3, and strain in the ∫110⊃ direction being not more than 3.0 x 10-3. A method of preparation of a surface treated magnesium hydroxide is characterized in that, the surface active agent or a part of it in the form of a solution or suspension is added to an aqueous suspension of magnesium hydroxide, the mixture is mixed and water separated, providing the surface treated magnesium hydroxide. A mixture of magnesium hydroxide and a surface active agent or a part of it is mixed in a mixer at such elevated temperature, at which the surface active agent is uniformly deposited on the surface of magnesium hydroxide particles, and the product is cooled down.

    Flame retardant resin composition
    76.
    发明公开
    Flame retardant resin composition 有权
    FlammgeschützteHarzzusammensetzung

    公开(公告)号：EP0906933A1

    公开(公告)日：1999-04-07

    申请号：EP98307978.1

    申请日：1998-09-30

    Applicant: Kyowa Chemical Industry Co., Ltd.

    Inventor： Imahashi, Takeshi, c/o R.&D. Department ,  Katsuki, Keiko, c/o R.&D. Department ,  Iijima, Noriko, c/o R.&D. Department ,  Yoshii, Makoto, c/o R.&D. Department

    IPC: C08K3/22

    CPC classification number: C08K3/22 ,  C08K2003/2217 ,  C08K2003/2227 ,  C08K2201/003 ,  C08K2201/006

    Abstract: A flame retardant resin composition comprising (A) 100 parts by weight of a synthetic resin, (B) 20 to 150 parts by weight of magnesium hydroxide particles and (C) 20 to 150 parts by weight of aluminum hydroxide particles, wherein the magnesium hydroxide particles and the aluminum hydroxide particles satisfy the following conditions (i) to (v): (i) the average secondary particle diameter measured by a microtrack method is 0.4 to 4 pm; (ii) the specific surface measured by a BET method is 1 to 15 m 2 /g; (iii) the total content of an iron compound and a manganese compound is 200 ppm or less in terms of metals (Fe + Mn); (iv) the ratio of the specific surface measured by the BET method to the specific surface measured by a Blaine method is 1 to 4; and (v) the content of a water-soluble sodium salt is 500 ppm or less in terms of metal sodium. The present invention provides a halogen-free flame retardant resin composition and a molded article therefrom which composition and article have excellent thermal stability, acid resistance, water-resistant insulating properties, mechanical strength and surface appearance and are economically advantageous.

    Abstract translation: 一种阻燃树脂组合物，其包含（A）100重量份的合成树脂，（B）20至150重量份的氢氧化镁颗粒和（C）20至150重量份的氢氧化铝颗粒，其中所述氢氧化镁 颗粒和氢氧化铝颗粒满足以下条件（i）至（v）：（i）通过微曲线法测量的平均二次粒径为0.4至4μm; （ii）通过BET法测定的比表面积为1〜15m 2 / g; （iii）铁化合物和锰化合物的总含量以金属（Fe + Mn）计为200ppm以下。 （iv）通过BET法测定的比表面积与通过Blaine法测定的比表面积的比例为1〜4; 和（v）以金属钠计，水溶性钠盐的含量为500ppm以下。 本发明提供一种无卤阻燃树脂组合物及其成型品，其组成和制品具有优异的热稳定性，耐酸性，耐水绝缘性，机械强度和表面外观，并且在经济上是有利的。

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