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    1.
    发明专利
    未知

    公开(公告)号：AT526358T

    公开(公告)日：2011-10-15

    申请号：AT04722422

    申请日：2004-03-22

    Applicant: SEKISUI PLASTICS

    Inventor： MATSUMURA HIDEYASU ,  TSUTSUI YASUTAKA

    IPC: C08J9/16 ,  C08J9/00 ,  C08J9/232

    Abstract: According to the present invention, there is provided expandable beads of a styrene-modified linear low-density polyethylene-based resin comprising a volatile blowing agent and a base resin, the base resin containing more than 50 to 1000 parts by weight of a polystyrene-based resin component relative to 100 parts by weight of a non-crosslinked linear low-density polyethylene-based resin component, wherein the base resin contains less than 2 wt% of a gel component comprising a graft polymer of the polystyrene-based resin component and the low-density polyethylene-based resin component.

    3.
    发明专利
    未知

    公开(公告)号：AT550374T

    公开(公告)日：2012-04-15

    申请号：AT07831084

    申请日：2007-10-25

    Applicant: SEKISUI PLASTICS

    Inventor： MORIOKA IKUO ,  TSUTSUI YASUTAKA ,  MATSUMURA HIDEYASU

    IPC: C08J9/18 ,  C08F2/44 ,  C08L25/04

    Abstract: Expandable polystyrenic resin particles having superior resistance to cracking of a molded foam product, having superior retention of blowing agent and maintaining expandability over a long period of time, a production process thereof, and a molded foam product are provided. These expandable polystyrenic resin particles contain a volatile blowing agent in polystyrenic resin particles obtained by impregnating and polymerizing a styrenic monomer in polyolefin resin particles to form a polystyrenic resin, wherein together with the styrenic monomer being used at 140 to 600 parts by weight to 100 parts by weight of the polyolefin resin particles, the average thickness of the surface layer observed in scanning electron micrographs obtained by immersing sections cut into halves through the center from the surface of the resin particles in tetrahydrofuran followed by extracting the polystyrenic resin component and capturing cross-sections of said sections is 15 to 150 μm, and the volatile blowing agent is contained at 5.5 to 13.0% by weight.

    4.
    发明专利
    未知

    公开(公告)号：AT450561T

    公开(公告)日：2009-12-15

    申请号：AT04747876

    申请日：2004-07-23

    Applicant: SEKISUI PLASTICS

    Inventor： INADA NAOKUNI ,  MATSUMURA HIDEYASU ,  TSUTSUI YASUTAKA ,  MORIOKA IKUO

    IPC: C08J9/18 ,  C08J9/232

    Abstract: A pre-expanded beads of olefin-modified polystyrene-based resin comprising a pre-expanded beads of a polystyrene-based resin modified with a polyolefin-based resin, wherein a styrene-based monomer forming a polystyrene-based resin in the beads is used in the range of 100 to 1,000 parts by weight relative to 100 parts by weight of a polyolefin-based resin, a bulk density of each bead is 0.012 to 0.20 g/cm 3 , and an absorbance ratio at 698 cm -1 and 2850 cm -1 (D 698 /D 2850 ) obtained from an infrared absorption spectrum of each bead surface measured by ATR method infrared spectroscopy is in the range of 0.1 to 2.5.

    7.
    发明专利
    未知

    公开(公告)号：BRPI0718499A2

    公开(公告)日：2014-07-08

    申请号：BRPI0718499

    申请日：2007-10-25

    Applicant: SEKISUI PLASTICS

    Inventor： MORIOKA IKUO ,  TSUTSUI YASUTAKA ,  MATSUMURA HIDEYASU

    IPC: C08J9/18 ,  C08F2/44 ,  C08L25/04

    Abstract: Expandable polystyrenic resin particles having superior resistance to cracking of a molded foam product, having superior retention of blowing agent and maintaining expandability over a long period of time, a production process thereof, and a molded foam product are provided. These expandable polystyrenic resin particles contain a volatile blowing agent in polystyrenic resin particles obtained by impregnating and polymerizing a styrenic monomer in polyolefin resin particles to form a polystyrenic resin, wherein together with the styrenic monomer being used at 140 to 600 parts by weight to 100 parts by weight of the polyolefin resin particles, the average thickness of the surface layer observed in scanning electron micrographs obtained by immersing sections cut into halves through the center from the surface of the resin particles in tetrahydrofuran followed by extracting the polystyrenic resin component and capturing cross-sections of said sections is 15 to 150 μm, and the volatile blowing agent is contained at 5.5 to 13.0% by weight.

    9.
    发明专利
    未知

    公开(公告)号：DE602004024415D1

    公开(公告)日：2010-01-14

    申请号：DE602004024415

    申请日：2004-07-23

    Applicant: SEKISUI PLASTICS

    Inventor： INADA NAOKUNI ,  MATSUMURA HIDEYASU ,  TSUTSUI YASUTAKA ,  MORIOKA IKUO

    IPC: C08J9/18 ,  C08J9/232

    Abstract: A pre-expanded beads of olefin-modified polystyrene-based resin comprising a pre-expanded beads of a polystyrene-based resin modified with a polyolefin-based resin, wherein a styrene-based monomer forming a polystyrene-based resin in the beads is used in the range of 100 to 1,000 parts by weight relative to 100 parts by weight of a polyolefin-based resin, a bulk density of each bead is 0.012 to 0.20 g/cm 3 , and an absorbance ratio at 698 cm -1 and 2850 cm -1 (D 698 /D 2850 ) obtained from an infrared absorption spectrum of each bead surface measured by ATR method infrared spectroscopy is in the range of 0.1 to 2.5.

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