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    BUMPER ABSORBER
    3.
    发明公开
    BUMPER ABSORBER 审中-公开

    公开(公告)号：EP4450334A1

    公开(公告)日：2024-10-23

    申请号：EP22907533.8

    申请日：2022-12-16

    申请人： Kaneka Corporation

    发明人： TAMURA, Mitsuhiro ,  SAWAI, Seiji

    IPC分类号： B60R19/18

    摘要： To absorb energy so that a reaction force against a pedestrian does not increase to a level higher than or equal to a certain level at a time of collision, a bumper absorber (20) includes: a first structure (21) whose cross-sectional structure perpendicular to a Y direction has a mountain shape; and a second structure (22) which has a shape such that the second structure is simply compressed in an X direction. The first structure (21) has, in a rear end surface (21b) thereof, a groove (21c) extending in the Y direction. A dimension (A) of the first structure (21) in the X direction is greater than a dimension (A') of the second structure (22) in the X direction. Densities of the first and second structures (21 and 22) and a width (D) and a depth (C) of the groove (22c) of the first structure (21) are set to specific ranges.

    EXPANDABLE METHYL METHACRYLATE RESIN PARTICLES, PRE-EXPANDED PARTICLES, EXPANSION MOLDED ARTICLE, AND EVAPORATIVE PATTERN
    4.
    发明公开
    EXPANDABLE METHYL METHACRYLATE RESIN PARTICLES, PRE-EXPANDED PARTICLES, EXPANSION MOLDED ARTICLE, AND EVAPORATIVE PATTERN 有权
    可膨胀的甲基丙烯酸甲酯树脂颗粒，预膨胀颗粒，膨胀成型制品和蒸发模式

    公开(公告)号：EP3199580A1

    公开(公告)日：2017-08-02

    申请号：EP15843592.5

    申请日：2015-09-14

    申请人： Kaneka Corporation

    发明人： SUZUKI, Kirito ,  TAMURA, Mitsuhiro ,  HENMI, Tatsuya

    IPC分类号： C08J9/20 ,  B22C7/02

    摘要： The present invention addresses the problem of providing a me thyl methacrylate expanded mold article that rarely generates smoke and soot upon ignition, that can be expanded at a high expansion ra tio, and that is hardly broken upon deformation. The problem is sol ved by an expandable poly methyl methacrylate particle comprising a polymer obtained from 100 parts by weight of an acrylic monomer, a nd not less than 0.05 parts by weight and not more than 0.15 parts b y weight of a polyfunctional monomer, wherein the acrylic monomer c omprises not less than 90% by weight and not more than 98% by weight of methyl methacrylate and not less than 2% by weight and not more than 10% by weight of an C 2-8 alkyl acrylate.

    摘要翻译： 本发明解决了提供甲基丙烯酸甲酯膨胀模制品的问题，所述甲基丙烯酸甲酯膨胀模制品在点燃时很少产生烟雾和烟灰，所述甲基丙烯酸甲酯膨胀模制品可以以高膨胀比膨胀并且在变形时几乎不破裂。 该问题由包含由100重量份的丙烯酸类单体得到的聚合物，和不少于0.05重量份且不多于0.15重量份的多官能单体的可膨胀聚甲基丙烯酸甲酯颗粒来解决，其中 丙烯酸单体包含不小于90重量％且不大于98重量％的甲基丙烯酸甲酯和不小于2重量％并且不大于10重量％的丙烯酸C2-8烷基酯。