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37 条记录 (耗时 0.023 秒)

    Process for preparing pre-expanded particles of thermoplastic resin
    1.
    发明授权
    Process for preparing pre-expanded particles of thermoplastic resin 失效
    制备热塑性树脂预发泡颗粒的方法

    公开(公告)号：US4778829A

    公开(公告)日：1988-10-18

    申请号：US84058

    申请日：1987-08-11

    申请人： Tadayuki Ichimura ,  Kenichi Senda ,  Masao Ando ,  Hirofumi Maeda

    发明人： Tadayuki Ichimura ,  Kenichi Senda ,  Masao Ando ,  Hirofumi Maeda

    IPC分类号： B29C44/34 ,  C08J9/16 ,  C08J9/22 ,  C08J9/228 ,  C08J9/232

    CPC分类号： C08J9/232 ,  B29C44/3461 ,  B29C44/445 ,  C08J9/228 ,  B29K2023/06 ,  B29K2995/0063 ,  C08J2323/02

    摘要： A process for preparing pre-expanded particles of a thermoplastic resin, which comprises heating an aqueous dispersion of thermoplastic resin particles containing a volatile blowing agent to a high temperature under pressure in a pressure vessel, and releasing the dispersion into an atmosphere maintained at a lower pressure than the pressure in the pressure vessel and at a temperature of not lower than 40.degree. C. According to the process of the present invention, there can be obtained pre-expanded thermoplastic resin particles with a large average diameter of cells. By molding the pre-expanded particles obtained by the present invention, molded articles which are small in dimensional shrinkage and excellent in surface appearance can be obtained without imparting expandability to the particles or aging the particles under pressure prior to molding.

    摘要翻译： 一种制备热塑性树脂预发泡颗粒的方法，包括在压力容器中将含有挥发性发泡剂的热塑性树脂颗粒的水分散体加热至高温，并将分散体释放到保持在较低温度 压力高于压力容器中的压力，并且温度不低于40℃。根据本发明的方法，可以获得具有较大平均直径的电池的预发泡热塑性树脂颗粒。 通过模制本发明获得的预发泡颗粒，可以获得尺寸收缩小和表面外观优异的模制品，而不会在模塑之前赋予颗粒的可扩展性或使压力下的颗粒老化。

    Pre-expanded particles of non-crosslinked linear low density polyethylene
    2.
    发明授权
    Pre-expanded particles of non-crosslinked linear low density polyethylene 失效
    非交联线性低密度聚乙烯的预发泡颗粒

    公开(公告)号：US4968723A

    公开(公告)日：1990-11-06

    申请号：US257113

    申请日：1988-10-13

    申请人： Kenichi Senda ,  Masao Ando ,  Hirofumi Maeda

    发明人： Kenichi Senda ,  Masao Ando ,  Hirofumi Maeda

    IPC分类号： C08J9/22 ,  B29C44/44 ,  C08J9/16 ,  C08J9/228 ,  C08J9/232 ,  C08L23/02

    CPC分类号： C08J9/232 ,  B29C44/445 ,  C08J9/228 ,  C08J2323/02

    摘要： A pre-expanded particle of a non-crosslinked linear low density polyethylene having an average cell diameter as large as 120 to 1,200 .mu.m which can be molded, without further imparting an expandability prior to molding or without aging under pressure, by heating in a closed mold permeable to a fluid heating medium such as steam to form a well bonded unitary cellular molded article having a good appearance, a high expansion ratio and improved heat resistance and mechanical property with a slight volumetric shrinkage.

    摘要翻译： 平均泡孔直径为120-1200μm的非交联线型低密度聚乙烯的预发泡颗粒，其可以模塑，而不会在模塑之前进一步赋予膨胀性，或在压力下不加老化，通过在 封闭的模具可以通过诸如蒸汽的流体加热介质渗透，以形成具有良好外观，高膨胀率和改善的耐热性以及具有轻微的体积收缩的机械性能的良好结合的单元的多孔模塑制品。

    Pre-expanded particle of polyolefine and process for preparing the same
    4.
    发明授权
    Pre-expanded particle of polyolefine and process for preparing the same 失效
    聚烯烃的预发泡颗粒及其制备方法

    公开(公告)号：US4540718A

    公开(公告)日：1985-09-10

    申请号：US584859

    申请日：1984-02-29

    申请人： Kenichi Senda ,  Masao Ando ,  Kyoichi Nakamura ,  Tatehiko Nishida

    发明人： Kenichi Senda ,  Masao Ando ,  Kyoichi Nakamura ,  Tatehiko Nishida

    IPC分类号： C08J9/18 ,  C08J9/228

    CPC分类号： C08J9/228 ,  C08J9/18 ,  C08J2203/142 ,  C08J2323/02 ,  Y10S264/09

    摘要： A pre-expanded particle suitable for foaming in a mold comprising polyolefin which has a characteristic property that an inclination of slope line obtained on a graph when logarithmic values of melt tension of the polyolefin are plotted as ordinate and reciprocals of absolute temperature at which the melt tension is measured are plotted as abscissa is less than 1,500 is provided. A foamed article produced from the pre-expanded particles has an excellent appearance, a flat surface and good mechanical strength, and is useful for wrapping material, insulating material, a container or a fender of cars.A process for preparing the above-mentioned pre-expanded particles is also disclosed.

    摘要翻译： 适用于在包含聚烯烃的模具中发泡的预发泡颗粒，其具有以下特征：当聚烯烃的熔体张力的对数值作为纵坐标和绝对温度的倒数绘制时，在曲线图上获得的斜率线的倾斜度为特征， 测量的张力绘制为横坐标小于1,500。 由预发泡颗粒制成的发泡制品具有优异的外观，平坦的表面和良好的机械强度，并且可用于包装材料，绝缘材料，容器或汽车挡泥板。 还公开了制备上述预发泡颗粒的方法。

    Expanded particles of polyolefin resin and process for producing same
    5.
    发明授权
    Expanded particles of polyolefin resin and process for producing same 失效
    聚烯烃树脂的膨胀颗粒及其制造方法

    公开(公告)号：US4448901A

    公开(公告)日：1984-05-15

    申请号：US494394

    申请日：1983-05-13

    申请人： Kenichi Senda ,  Masao Ando ,  Kyoichi Nakamura ,  Kiyoshi Mori ,  Tatehiko Nishida

    发明人： Kenichi Senda ,  Masao Ando ,  Kyoichi Nakamura ,  Kiyoshi Mori ,  Tatehiko Nishida

    IPC分类号： B29C44/34 ,  C08J9/18

    CPC分类号： C08J9/18 ,  B29C44/3461 ,  C08J2203/142 ,  C08J2323/02 ,  Y10S264/09

    摘要： The mixture of water and the polyolefin resin particles impregnated with a volatile blowing agent are released from the interior of the pressure-resistant container under a constant temperature and constant pressure preferably keeping the partial pressure of the blowing agent constant, through at least one orifice having an area of 0.07 to 300 mm.sup.2, into a low-pressure zone.This invention gives various advantages when applied to the practical process resulting in expanded particles with superior properties which are free of blocking and remarkably uniform in the degree of expansion, and are useful for molding.

    摘要翻译： 浸渍有挥发性发泡剂的水和聚烯烃树脂颗粒的混合物在恒定温度和恒定压力下从耐压容器的内部释放，优选通过至少一个具有 面积为0.07至300平方毫米，进入低压区。 本发明在应用于实际工艺的过程中给出了各种各样的优点，从而产生具有优异性能的膨胀颗粒，其在膨胀程度上不受阻塞和显着均匀，并且可用于模制。

    Method of aging expansion-molded body of polyolefin
    7.
    发明授权
    Method of aging expansion-molded body of polyolefin 失效
    聚烯烃老化膨胀成型体的方法

    公开(公告)号：US4631159A

    公开(公告)日：1986-12-23

    申请号：US676180

    申请日：1984-11-29

    申请人： Hirofumi Maeda ,  Kazuyoshi Watanabe ,  Naruhiko Akamatsu ,  Kenichi Senda ,  Shunichi Nishioka

    发明人： Hirofumi Maeda ,  Kazuyoshi Watanabe ,  Naruhiko Akamatsu ,  Kenichi Senda ,  Shunichi Nishioka

    IPC分类号： B29C44/00 ,  B29K23/00 ,  B29K105/04 ,  C08J9/232 ,  C08J9/36 ,  C08J9/22 ,  C08J3/24

    CPC分类号： C08J9/232 ,  C08J9/36 ,  C08J2323/02 ,  Y10S264/15 ,  Y10S264/16 ,  Y10S264/18

    摘要： A method for aging an expansion-molded body of polyolefin prepared by heating pre-expanded polyolefin particles within a mold involves cooling the molded body within the mold so that the molded body is not substantially smaller than the volume of the mold cavity and is temporarily expandable after being removed from the mold to not more than 110% relative to the volume in the mold cavity, removing the molded body from the mold, placing the molded body in an atmosphere substantially under atmospheric pressure and having a temperature of 25.degree. to 55.degree. C. lower than the melting point of the polyolefin while the volume of the molded body is 70 to 110% relative to the volume of the mold cavity and holding the molded body in this atmosphere until the temperature of the molded body is at least equal to the temperature of the atmosphere.

    摘要翻译： 通过在模具内加热预发泡聚烯烃颗粒而制备的聚烯烃发泡模塑体的老化方法包括在模具内冷却模制体，使得模制体基本上不小于模腔体积并且暂时可膨胀 在从模具中取出相对于模腔中的体积不超过11​​0％的范围内，将成型体从模具中取出，将成型体置于基本上大气压的气氛中，温度为25°〜55° C.低于聚烯烃的熔点，而成型体的体积相对于模腔体积为70〜110％，并将成型体保持在该气氛中，直到成型体的温度至少等于 气氛的温度。

    FOAMED THERMOPLASTIC RESIN PARTICLES AND METHOD OF PRODUCING THE FOAMED PARTICLES
    8.
    发明申请
    FOAMED THERMOPLASTIC RESIN PARTICLES AND METHOD OF PRODUCING THE FOAMED PARTICLES 失效
    泡沫热塑性树脂颗粒和生产泡沫颗粒的方法

    公开(公告)号：US20090215914A1

    公开(公告)日：2009-08-27

    申请号：US11909717

    申请日：2006-03-20

    申请人： Fuminobu Hirose ,  Toshio Miyagawa ,  Kenichi Senda

    发明人： Fuminobu Hirose ,  Toshio Miyagawa ,  Kenichi Senda

    IPC分类号： C08J9/00 ,  C08G63/12

    CPC分类号： C08J9/18 ,  C08J2203/14 ,  C08J2367/02 ,  C08J2367/04

    摘要： It is intended to provide resin foamed particles having a high environmental compatibility. Furthermore, it is intended to provide an economical and easy-to-use method of producing resin foamed particles having biodegradability without using a crosslinking agent, which should be handled with care, in the step of producing foamed resin particles. It is also intended to provide a molded article made of foamed particles having an extremely high heat insulating property and a biodegradability. Thermoplastic polyester-type resin foamed particles, in which the ratio of cells with diameter of 50 μm or less amounts to 20% or more in an arbitrary two-dimensional section of a thermoplastic polyester-type resin foamed particles, are first produced and then a molded article is produced with the use of these resin foamed particles.

    摘要翻译： 旨在提供具有高环境相容性的树脂发泡颗粒。 此外，本发明提供一种经济且易于使用的制造发泡树脂颗粒的步骤中生产具有生物降解性的树脂发泡颗粒的方法，而不使用应谨慎处理的交联剂。 本发明还提供一种由绝热性和生物降解性极高的发泡粒子制成的成型体。 首先制造热塑性聚酯型树脂发泡粒子的任意二维截面中直径为50μm以下的电池的比例为20％以上的热塑性聚酯型树脂发泡粒子， 使用这些树脂发泡粒子制造成型品。

    Polyolefin resin pre-expanded particles and process for preparing the same
    10.
    发明授权
    Polyolefin resin pre-expanded particles and process for preparing the same 有权

    公开(公告)号：US06593382B2

    公开(公告)日：2003-07-15

    申请号：US10058077

    申请日：2002-01-29

    申请人： Taro Kiguchi ,  Tomonori Iwamoto ,  Kenichi Senda

    发明人： Taro Kiguchi ,  Tomonori Iwamoto ,  Kenichi Senda

    IPC分类号： C08J918

    CPC分类号： C08J9/18 ,  C08J2323/02

    摘要： Polyolefin resin pre-expanded particles having two fusion peaks on DSC curve wherein the proportion of the heat of fusion Qh of the peak appearing on the high temperature side based on the total heat of fusion of the two peaks represented by the equation: [Qh/(Ql+Qh)]×100 falls within the range of 10 to 60% in which Ql is the heat of fusion of the peak appearing on the low temperature side, and the standard deviation of said proportion is not more than 1.2. The pre-expanded particles are prepared by releasing an aqueous dispersion of resin particles impregnated with a blowing agent from a vessel into an atmosphere of lower pressure than the inner pressure of the vessel to expand the particles, while stepwise or continuously raising the inner temperature or the inner pressure of the vessel at a specific rate, and can be molded with stable molding cycle to give cellular molded articles having stable dimensions.