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    Polyolefin resin foam particles and production method for same
    2.
    发明授权
    Polyolefin resin foam particles and production method for same 有权

    公开(公告)号：US10087299B2

    公开(公告)日：2018-10-02

    申请号：US15686678

    申请日：2017-08-25

    Applicant: Kaneka Corporation

    Inventor： Takema Yamaguchi ,  Shintaro Miura

    IPC: C08J9/16 ,  C08J9/20 ,  C08J9/12 ,  C08J9/14

    Abstract: An expanded polyolefin resin particle is obtained by expanding a polyolefin resin particle using water and/or an inorganic gas as a foaming agent. The polyolefin resin particle includes a polyolefin resin, a product obtained by heating and kneading a mixture, and a water absorbing substance, wherein the mixture includes a first polypropylene resin, a polypropylene wax, a polyorganosiloxane including at least one silicon-atom-bound radical polymerizable functional group per molecule, and an organic peroxide.

    POLYPROPYLENE-BASED RESIN FOAMED PARTICLES HAVING EXCELLENT FLAME RETARDANCY AND CONDUCTIVITY AND POLYPROPYLENE-BASED RESIN IN-MOLD FOAMED MOLDED PRODUCT
    5.
    发明申请
    POLYPROPYLENE-BASED RESIN FOAMED PARTICLES HAVING EXCELLENT FLAME RETARDANCY AND CONDUCTIVITY AND POLYPROPYLENE-BASED RESIN IN-MOLD FOAMED MOLDED PRODUCT 审中-公开
    基于聚丙烯的树脂泡沫颗粒具有优异的阻燃性和导电性和聚丙烯基树脂模内发泡成型产品

    公开(公告)号：US20140346411A1

    公开(公告)日：2014-11-27

    申请号：US14367073

    申请日：2012-12-14

    Applicant: KANEKA CORPORATION

    Inventor： Shintaro Miura ,  Toru Yoshida

    IPC: H01B1/24 ,  C08J9/00

    CPC classification number: H01B1/24 ,  C08J9/0066 ,  C08J9/122 ,  C08J9/16 ,  C08J2203/06 ,  C08J2323/10 ,  C08J2471/02 ,  C08L23/04 ,  C08L23/10 ,  C08L2205/16

    Abstract: Provided are expanded polypropylene resin particles from which a polypropylene resin-based in-mold expansion-molded product is obtainable, the polypropylene resin-based in-mold expansion-molded product being excellent in electrical conductivity and particularly having improved in flame retardancy with no use of a flame retardant. Expanded polypropylene resin particles obtainable by expanding polypropylene resin particles containing a polypropylene resin composition which contains electrically conductive carbon black in an amount in a range of not less than 11 parts by weight and not more than 25 parts by weight with respect to 100 parts by weight of polypropylene resin, the electrically conductive carbon black having a dibutyl phthalate absorption amount in a range of not less than 300 cm3/100 g and not more than 600 cm3/100 g, have an average cell diameter in a range of more than 0.16 mm and not more than 0.35 mm.

    Abstract translation: 本发明提供可获得基于聚丙烯树脂的模内发泡成型体的发泡聚丙烯树脂颗粒，导电性优异且特别是阻燃性提高的无聚丙烯树脂的模内发泡成型体 的阻燃剂。 膨胀聚丙烯树脂颗粒可以通过将包含导电性炭黑的聚丙烯树脂组合物膨胀的聚丙烯树脂颗粒膨胀，相对于100重量份，其含量为不小于11重量份且不超过25重量份 的聚丙烯树脂，具有不小于300cm 3 / 100g且不大于600cm 3 / 100g范围内的邻苯二甲酸二丁酯吸收量的导电炭黑的平均泡孔直径在大于0.16mm的范围内 不超过0.35mm。

    Polypropylene resin foamed particles, in-mold foam molded body of polypropylene resin, and method for manufacturing same
    8.
    发明授权
    Polypropylene resin foamed particles, in-mold foam molded body of polypropylene resin, and method for manufacturing same 有权

    公开(公告)号：US10221292B2

    公开(公告)日：2019-03-05

    申请号：US15910652

    申请日：2018-03-02

    Applicant: Kaneka Corporation

    Inventor： Toru Yoshida ,  Shintaro Miura

    IPC: C08J9/18 ,  C08J9/232 ,  C08L23/14 ,  C08L23/16 ,  C08J9/00 ,  C08J9/224 ,  B29C44/02 ,  B29K23/00 ,  B29K105/04 ,  B29K105/00 ,  B29C44/34 ,  B29C44/44

    Abstract: A method of producing a polypropylene resin in-mold expanded product, includes: placing polypropylene resin particles obtained from a base material resin having a melting point of 140° C. to 150° C., the base material resin comprising: a polypropylene resin A comprising 3 weight % to 15 weight % of 1-butene and having a melting point of 130° C. to 140° C.; and a polypropylene resin B having a melting point of 145° C. to 165° C., water, and an inorganic gas foaming agent in a pressure-resistant container, forming a mixture, dispersing the polypropylene resin particles while stirring the mixture, obtaining a dispersion liquid, increasing a temperature and a pressure in the pressure-resistant container, releasing the dispersion liquid from the pressure-resistant container into a region having a pressure lower than the pressure in the pressure-resistant container, producing expanded polypropylene resin particles; and filling a mold with the expanded polypropylene resin particles, and then heating the expanded polypropylene resin particles.

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