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    Composite resin pre-expanded particles containing carbon black and method for producing same, and expanded molded article
    143.
    发明授权
    Composite resin pre-expanded particles containing carbon black and method for producing same, and expanded molded article 有权

    公开(公告)号：US10184036B2

    公开(公告)日：2019-01-22

    申请号：US15023005

    申请日：2014-09-11

    Applicant: SEKISUI PLASTICS CO., LTD.

    Inventor： Akira Isayama ,  Masahiko Ozawa

    IPC: C08J9/00 ,  C08J9/14 ,  C08J9/18 ,  C08J9/22 ,  C08J9/232

    Abstract: Carbon black-containing composite resin pre-expanded particles comprising 100 to 400 parts by mass of a polystyrene-based resin with respect to 100 parts by mass of a carbon black-containing polyolefin-based resin; having a carbon black content of 0.5 to 5.0% by mass and a bulk density of 0.015 to 0.25 g/cm3; and having an outermost layer of 30 to 80 pm after undergoing the following tests: (a) one of the carbon black-containing composite resin pre-expanded particles is sliced into a 1-mm slice in such a way that cross-section surfaces of cells are exposed on both surfaces of the slice; (b) the obtained slice is immersed in toluene at 25° C. for 24 hours to extract a polystyrene-based resin component as described above; (c) the cross-section surface of the slice is then subjected to magnified photographing by a microscope; (d) the obtained microscope image is observed.

    MOLDED ARTICLE MADE OF LIGHT-DIFFUSING RESIN COMPOSITION AND USE THEREOF
    144.
    发明申请
    MOLDED ARTICLE MADE OF LIGHT-DIFFUSING RESIN COMPOSITION AND USE THEREOF 审中-公开

    公开(公告)号：US20180313985A1

    公开(公告)日：2018-11-01

    申请号：US15764663

    申请日：2016-09-30

    Applicant: SEKISUI PLASTICS CO., LTD.

    Inventor： Fumitaka ISHIMORI

    IPC: G02B5/02 ,  F21V5/00 ,  F21V9/08 ,  C08L69/00 ,  C08L33/14

    CPC classification number: F21V9/08 ,  C08L33/14 ,  C08L69/00 ,  G02B5/02

    Abstract: A molded article made of a light-diffusing resin composition which can color transmitted light, and use of the molded article are provided. In the molded article made of a light-diffusing resin composition (hereinafter “molded article”), the light-diffusing resin composition contains a thermoplastic resin and transparent particles which are dispersed in the resin and which have a volume-average particle size of 1-100 μm. The molded article has a total light transmittance of 85% or higher, and a degree of dispersion of 20° or less, wherein the degree of dispersion is defined as a transmission angle at which a light transmittance is 50% of a rectilinear light transmittance when light is emitted to a surface of the molded article in a direction normal to the surface. An average rectilinear light transmittance at wavelengths from 410-500 nm is greater than an average rectilinear light transmittance at wavelengths from 500-600 nm.

    LIGHT DIFFUSER AND ITS USE
    148.
    发明申请
    LIGHT DIFFUSER AND ITS USE 审中-公开
    光扩散器及其使用

    公开(公告)号：US20160231470A1

    公开(公告)日：2016-08-11

    申请号：US15023821

    申请日：2014-09-24

    Applicant: SEKISUI PLASTICS CO., LTD.

    Inventor： Fumitaka Ishimori ,  Kazuki Machida

    IPC: G02B5/02 ,  F21K99/00 ,  F21V3/04

    CPC classification number: G02B5/02 ,  F21K9/232 ,  F21K9/27 ,  F21K9/69 ,  F21V3/0625 ,  F21Y2101/00 ,  G02B5/0242

    Abstract: There is provided a light diffuser which can alleviate glare of light emitted from a light source while preventing a decrease in brightness of the emitted light despite the presence of the light diffuser. The light diffuser, contains a thermoplastic resin and transparent particles added thereto. The light diffuser has a total light transmittance in a range of 50 to 85%, and a wavelength selectivity in a rectilinear light ratio in a range of 1.5 to 5.0, as obtained by following formulas (1)-(3): (wavelength selectivity in rectilinear light ratio)=(rectilinear light ratio of 550-nm light)/(rectilinear light ratio of 450-nm light)  (1) (rectilinear light ratio of 550-nm light)=(rectilinear light transmittance for 550-nm light)/(total transmittance for 550-nm light)  (2) (rectilinear light ratio of 450-nm light)=(rectilinear light transmittance for 450-nm light)/(total transmittance for 450-nm light)  (3).

    Abstract translation: 提供了一种光漫射器，其可以减轻光源发出的光的眩光，同时防止发光的亮度降低，尽管存在光扩散器。 光扩散器包含热塑性树脂和添加了透明颗粒。 光扩散器的总透光率为50〜85％，直线光比的波长选择性为1.5〜5.0，如下式（1）〜（3）所示：（波长选择性 （直线光比550nm）/（直线光比450nm光）（1）（直线光比550nm光）=（直线光透射率为550nm的光 ）/（550nm光的总透射率）（2）（450nm光的直线光比）=（450nm光的直线透光率）/（450nm光的全透射率）（3）。

    POLYSTYRENE-CONTAINING COMPOSITE RESIN PARTICLES AND METHOD FOR PRODUCING SAME, EXPANDABLE COMPOSITE RESIN PARTICLES, PRE-EXPANDED PARTICLES, AND EXPANDED MOLDED ARTICLE
    149.
    发明申请
    POLYSTYRENE-CONTAINING COMPOSITE RESIN PARTICLES AND METHOD FOR PRODUCING SAME, EXPANDABLE COMPOSITE RESIN PARTICLES, PRE-EXPANDED PARTICLES, AND EXPANDED MOLDED ARTICLE 审中-公开
    含有聚氨酯的复合树脂颗粒及其生产方法，可膨胀的复合树脂颗粒，预膨胀颗粒和膨胀模制品

    公开(公告)号：US20160208068A1

    公开(公告)日：2016-07-21

    申请号：US15023491

    申请日：2014-09-24

    Applicant: SEKISUI PLASTICS CO., LTD.

    Inventor： Yuichi GONDO ,  Naoya MORISHIMA

    IPC: C08J9/18 ,  C08J9/228 ,  C08L25/04

    CPC classification number: C08J9/18 ,  C08J9/0061 ,  C08J9/141 ,  C08J9/228 ,  C08J9/232 ,  C08J2201/034 ,  C08J2203/14 ,  C08J2203/182 ,  C08J2325/06 ,  C08J2423/08 ,  C08J2431/04 ,  C08K5/01 ,  C08K5/1535 ,  C08L25/04 ,  C08L25/06 ,  C08L23/0853

    Abstract: Polystyrene-based composite resin particles includes 100 to 500 parts by weight of a polystyrene-based resin with respect to 100 parts by weight of an ethylene-vinyl acetate copolymer resin. The polystyrene-based composite resin particles are impregnated with a volatile blowing agent and are pre-expanded to obtain pre-expanded particles; the obtained pre-expanded particles are immersed in tetrahydrofuran for 24 hours to obtain an extract A; and the pre-expanded particles are divided into two halves through the center to prepare halved particles, and the halved particles are immersed in tetrahydrofuran for 24 hours to obtain an extract B; and the obtained extract A and extract B are subjected to a GPC (gel permeation chromatography) measurement and obtain the following results: the polystyrene-based resin having a weight-average molecular weight (Mw) of 100,000 to 500,000 gives a peak obtained from chromatograms for the extract A and for the extract B.

    Abstract translation: 聚苯乙烯类复合树脂颗粒相对于100重量份的乙烯 - 乙酸乙烯酯共聚物树脂包含100至500重量份的聚苯乙烯基树脂。 聚苯乙烯类复合树脂颗粒用挥发性发泡剂浸渍并预膨胀以获得预发泡颗粒; 将获得的预发泡颗粒浸入四氢呋喃中24小时以获得提取物A; 将预发泡颗粒通过中心分成两半，以制备半粒子，将半粒子浸入四氢呋喃中24小时以获得提取物B; 将得到的提取物A和提取物B进行GPC（凝胶渗透色谱）测定，得到以下结果：重均分子量（Mw）为100,000〜500,000的聚苯乙烯类树脂得到由色谱图得到的峰 对于提取物A和提取物B.

    RESIN PARTICLES, METHOD FOR PRODUCING THE RESIN PARTICLES, AND USE THEREOF
    150.
    发明申请
    RESIN PARTICLES, METHOD FOR PRODUCING THE RESIN PARTICLES, AND USE THEREOF 有权
    树脂颗粒，生产树脂颗粒的方法及其用途

    公开(公告)号：US20140350171A1

    公开(公告)日：2014-11-27

    申请号：US14344124

    申请日：2011-09-28

    Applicant: SEKISUI PLASTICS CO., LTD.

    Inventor： Satoru Matsumoto

    IPC: C08F236/20 ,  C09D147/00

    CPC classification number: C08F236/20 ,  C08F220/18 ,  C08F222/1006 ,  C09D133/06 ,  C09D147/00 ,  C08F2220/1825

    Abstract: The present invention provides resin particles including polymer obtained of a monomer mixture containing a monofunctional (meth)acrylic ester monomer, a monomer represented by a general formula (I); CH2═C(R1)—COO—(CH2CH2O)n—CO—C(R1)═CH2  (I) where R1 is a hydrogen or a methyl group and n is an integer from 1 to 4, and a monomer represented by a general formula (II); CH2═C(R2)—COO—(CH2CH2O)m—CO—C(R2)═CH2  (II) where R2 is a hydrogen or a methyl group and m is an integer from 5 to 15. The resin particles have a volume average particle diameter of 5 to 50 μm, a recovery rate of 15% or more to less than 30%, and a compression strength (MPa) that provides a multiplication product in the range of 24.5 to 60.0 obtained by multiplying the compression strength and the volume average particle diameter (μm).

    Abstract translation: 本发明提供了包含由单官能（甲基）丙烯酸酯单体，由通式（I）表示的单体）的单体混合物得到的聚合物的树脂颗粒。 CH 2 = C（R 1）-COO-（CH 2 CH 2 O）n -CO-C（R 1）= CH 2（I）其中R 1是氢或甲基，n是1至4的整数， 通式（II）; CH2 = C（R2）-COO-（CH2CH2O）m-CO-C（R2）= CH2（II）其中R2为氢或甲基，m为5至15的整数。树脂颗粒的体积 平均粒径为5〜50μm，回收率为15％以上且小于30％，压缩强度（MPa）为通过将压缩强度和压缩强度乘以24.5〜60.0的乘积， 体积平均粒径（μm）。

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