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    • 34. 发明申请
    • PROCESS FOR THE PREPARATION OF EXPANDABLE POLYSTYRENE
    • 制备可膨胀聚苯乙烯的方法
    • US20150175765A1
    • 2015-06-25
    • US14413452
    • 2013-06-25
    • Ineos Europe AG
    • Jean-Marc Galewski
    • C08J9/14C08J9/00C08J3/22
    • C08J9/141C08J3/22C08J9/0066C08J9/008C08J9/20C08J2201/024C08J2203/14C08J2325/06
    • A process for the preparation of expandable polystyrene (EPS) containing particles of carbon black and/or graphite is disclosed, comprising: (a) forming a masterbatch by adding carbon black and/or graphite to styrene polymer, (b) adding said masterbatch to an organic phase comprising styrene and optional comonomers, and heating the organic phase to a temperature between 30 and 90° C., (c) mixing the organic phase with an aqueous phase comprising water and suspending agents preheated to a temperature between 80 and 120° C. which is higher than the temperature of the organic phase, and (d) polymerising in a suspension polymerisation reaction the styrene and optional comonomers contained in the mixed aqueous and organic phases, with an expanding agent being added before, during or after the polymerisation, wherein the styrene polymer in the masterbatch contains at least 1 000 ppm of dimers. The process gives an improved product.
    • 公开了一种制备含有炭黑和/或石墨颗粒的可发性聚苯乙烯(EPS)的方法,包括:(a)通过向苯乙烯聚合物中加入炭黑和/或石墨形成母料,(b)将所述母料加入到 包含苯乙烯和任选的共聚单体的有机相,并将有机相加热至30-90℃的温度,(c)将有机相与包含水的预混合有机相和预热至80℃和120℃之间的混合物混合 其高于有机相的温度,和(d)在悬浮聚合反应中聚合苯乙烯和混合水相和有机相中包含的任选的共聚单体,在聚合之前,期间或之后加入发泡剂 ,其中母料中的苯乙烯聚合物含有至少1000ppm的二聚体。 该过程提供了改进的产品。
    • 37. 发明申请
    • Polystyrene foam containing a modifier-free nanoclay and having improved fire protection performance
    • 含有不含改性剂的纳米粘土并具有改进的防火性能的聚苯乙烯泡沫
    • US20070179205A1
    • 2007-08-02
    • US11221522
    • 2005-09-08
    • Roland LohMark PolaskyYadollah DelavizL. LeeXia CaoJiong ShenBharat Patel
    • Roland LohMark PolaskyYadollah DelavizL. LeeXia CaoJiong ShenBharat Patel
    • C08J9/16
    • C08J9/0066C08J9/008C08J9/20C08J9/232C08J2201/03C08J2203/14C08J2325/06
    • Polymer extruded or expanded foams that contain modifier-free nanoclays are provided. The addition of modifier-free nano-clays to extruded or expanded foam products improves the thermal properties, mechanical properties, and fire performance properties. Water or a water-containing compound is used as a carrier for the modifier-free nanoclays. The final foamed products may be utilized in building application such as foamed insulation products and in underground applications such as highway insulation. A preferred modifier-free nanoclay is Na+MMT. Modifier-free nanoclay particles may be injected into a polymer during an extrusion foaming process. In another embodiment of the invention, polymer beads containing water/nanoclay particles are formed using inverse emulsion/suspension polymerizations and expanded or extruded into a foamed product. In a further embodiment, a modifier-free nanoclay particle is encapsulated in a super-absorbent material, which may be used in an expanding or extruding process.
    • 提供了含有不含改性剂的纳米粘土的聚合物挤压或膨胀泡沫。 向挤出或膨胀的泡沫产品中加入无改性剂的纳米粘土改善了热性能,机械性能和防火性能。 使用水或含水化合物作为不含改性剂的纳米粘土的载体。 最终的发泡产品可用于建筑应用,例如泡沫绝热产品和地下应用如公路绝缘。 优选的不含修饰剂的纳米粘土是Na + MMT。 在挤出发泡过程中,可以将无修饰剂的纳米粘土颗粒注入聚合物中。 在本发明的另一个实施方案中,使用反相乳液/悬浮聚合形成含有水/纳米粘土颗粒的聚合物珠,并膨胀或挤出成发泡产品。 在另一个实施方案中,将不含改性剂的纳米粘土颗粒包封在超吸收材料中,其可用于膨胀或挤出过程。