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    POLYPROPYLENE RESIN FOAMED PARTICLES AND METHOD FOR PRODUCING SAME
    4.
    发明申请
    POLYPROPYLENE RESIN FOAMED PARTICLES AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：US20200040156A1

    公开(公告)日：2020-02-06

    申请号：US16606401

    申请日：2018-04-09

    Applicant: KANEKA CORPORATION

    Inventor： Yoshiyuki Mochizuki ,  Akihiro Itoi

    IPC: C08J9/228 ,  B29C44/34 ,  C08J9/18 ,  C08K3/04 ,  C08K3/34 ,  C08K3/22 ,  C08K3/26

    Abstract: Provided is polypropylene-based resin expanded particles which make it possible to obtain a gray in-mold foamed molded product whose color is uniform and excellent in color tone. The polypropylene-based resin expanded particles, which are uniform and excellent in color tone, are produced by (i) dispersing polypropylene-based resin particles and carbon dioxide into an aqueous dispersion medium in a closed vessel, the polypropylene-based resin particles containing carbon black and at least one selected from magnesium hydroxide and magnesium carbonate, the carbon black and the at least one selected from magnesium hydroxide and magnesium carbonate having been added to a polypropylene-based resin; (ii) heating a dispersion slurry obtained in (i) to a temperature not less than a softening temperature of the polypropylene-based resin particles and pressurizing the dispersion slurry; and (iii) then releasing the polypropylene-based resin particles into a region at a pressure lower than an internal pressure of the closed vessel.

    POLYETHYLENE-BASED RESIN FOAMED PARTICLES, POLYETHYLENE-BASED RESIN IN-MOLD-FOAM-MOLDED BODY, AND METHOD FOR PRODUCING POLYETHYLENE-BASED RESIN FOAMED PARTICLES
    6.
    发明申请
    POLYETHYLENE-BASED RESIN FOAMED PARTICLES, POLYETHYLENE-BASED RESIN IN-MOLD-FOAM-MOLDED BODY, AND METHOD FOR PRODUCING POLYETHYLENE-BASED RESIN FOAMED PARTICLES 审中-公开
    基于聚乙烯的树脂泡沫颗粒，聚乙烯基树脂模内泡沫模体，以及用于生产聚乙烯基树脂泡沫颗粒的方法

    公开(公告)号：US20150240043A1

    公开(公告)日：2015-08-27

    申请号：US14427529

    申请日：2013-09-11

    Applicant: KANEKA CORPORATION

    Inventor： Toru Yoshida ,  Akihiro Itoi

    IPC: C08J9/00

    CPC classification number: C08J9/0066 ,  C08J9/0023 ,  C08J9/0038 ,  C08J9/0052 ,  C08J9/0061 ,  C08J9/122 ,  C08J9/18 ,  C08J9/232 ,  C08J9/34 ,  C08J2201/034 ,  C08J2203/06 ,  C08J2205/052 ,  C08J2323/06 ,  C08J2323/08 ,  C08J2471/02 ,  C08L23/0815 ,  C08L2203/14

    Abstract: Polyethylene-based resin foamed particles are obtained having good productivity, achieve an increase in foaming ratio, and in which a miniaturization of the average cell diameter is suppressed. A polyethylene-based resin in-mold-foam-molded body using the foamed particles is reduced in yellowing of the surface of the molded body and has favorable surface beauty (surface smoothness). The foamed particles contain, as a base resin, a polyethylene-based resin composition containing 1000 ppm or more and 4000 ppm or less in total of one or more compounds selected from the group consisting of antioxidants, metal stearates, and inorganic substances and 50 ppm or more and 20000 ppm or less of hydrophilic compounds, in which the Z average molecular weight is 30×104 or more and 100×104 or less, the surface layer film thickness is 11 μm or more and 120 μm or less, and the open-cell ratio is 12% or less.

    Abstract translation: 得到生产性好，发泡率提高，抑制了平均泡孔直径的小型化的聚乙烯系树脂发泡粒子。 使用该发泡粒子的聚乙烯系树脂模内发泡成型体在成形体的表面变黄的同时减少，具有良好的表面美观性（表面平滑性）。 发泡粒子含有作为基础树脂的含有1000ppm以上且4000ppm以下的聚乙烯系树脂组合物，其中，一种或多种选自抗氧化剂，金属硬脂酸盐和无机物质的化合物和50ppm 以上且20000ppm以下的亲水性化合物，其中Z平均分子量为30×10 4以上且100×10 4以下，表层膜厚为11μm以上且120μm以下，开放 - 电池比为12％以下。

    POLYOLEFIN-BASED RESIN PRE-EXPANDED PARTICLES AND POLYOLEFIN-BASED RESIN IN-MOLD EXPANSION MOLDED ARTICLE COMPRISING POLYOLEFIN-BASED RESIN PRE-EXPANDED PARTICLES
    9.
    发明申请
    POLYOLEFIN-BASED RESIN PRE-EXPANDED PARTICLES AND POLYOLEFIN-BASED RESIN IN-MOLD EXPANSION MOLDED ARTICLE COMPRISING POLYOLEFIN-BASED RESIN PRE-EXPANDED PARTICLES 审中-公开
    基于聚烯烃的树脂预扩展颗粒和基于聚烯烃的树脂模内扩展模制包含基于聚烯烃的树脂预扩展颗粒

    公开(公告)号：US20150210815A1

    公开(公告)日：2015-07-30

    申请号：US14608492

    申请日：2015-01-29

    Applicant: KANEKA CORPORATION

    Inventor： Akihiro Itoi

    IPC: C08J9/00

    CPC classification number: C08J9/0038 ,  C08J9/0028 ,  C08J9/122 ,  C08J9/141 ,  C08J9/18 ,  C08J2203/14 ,  C08J2323/02 ,  C08K5/34926 ,  C08K5/523 ,  C08L23/02

    Abstract: Polyolefin-based resin pre-expanded particles include a polyolefin-based resin composition including a polyolefin-based resin, a sterically hindered amine ether flame retardant expressed by the general formula (1): R1NHCH2CH2CH2NR2CH2CH2NR3CH2CH2CH2NHR4  (1), and a phosphoric ester.The polyolefin-based resin pre-expanded particles are flame retardant polyolefin-based resin pre-expanded particles that can have good in-mold expansion moldability and exhibit excellent flame resistance compared to the conventional pre-expanded particles even when molded into a sample having a higher density or a larger thickness without using a halogen flame retardant, and that do not generate harmful gas during burning.

    Abstract translation: 聚烯烃类树脂预发泡粒子包括聚烯烃系树脂，聚烯烃类树脂，通式（1）表示的空间位阻胺醚类阻燃剂：R1NHCH2CH2CH2NR2CH2CH2NR3CH2CH2CH2NHR4（1）和磷酸酯。 聚烯烃类树脂预发泡粒子是阻燃聚烯烃类树脂预发泡粒子，与常规的预发泡粒子相比，即使在模塑成具有 更高的密度或更大的厚度，而不使用卤素阻燃剂，并且在燃烧期间不产生有害气体。

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