公开(公告)号：JPH07309967A

公开(公告)日：1995-11-28

申请号：JP12962494

申请日：1994-05-19

Applicant: JSP CORP

Inventor： TOKORO TOSHIO ,  TSURUGAI KAZUO ,  SHIOTANI AKIRA ,  OIKAWA MASAHARU

IPC: C08J9/16 ,  C08K3/22 ,  C08K5/06 ,  C08K5/41

Abstract: PURPOSE:To obtain an expanded polyolefin resin particle being flame-retardant and being excellent in moldability such as the fusibility among particle and secondary expansibility of particles during molding. CONSTITUTION:This particle contains a bis(alkyl ether)tetrabromobisphenol A flame retardant and/or a bis(alkyl ether)tetrabromobisphenol S flame retardant and a flame-retardant synergist.

公开(公告)号：JPH06192464A

公开(公告)日：1994-07-12

申请号：JP35755192

申请日：1992-12-24

Applicant: JSP CORP

Inventor： KUWABARA HIDEKI ,  TSURUGAI KAZUO ,  OIKAWA MASAHARU ,  SASAKI HIDEHIRO ,  SHIOTANI AKIRA

IPC: C08J9/12 ,  C08J9/18 ,  C08L23/08 ,  C08L23/18

Abstract: PURPOSE:To obtain easily a particle having a high expansion ratio and containing no ultrafine cells by using a blowing agent prepared by mixing carbon dioxide with an aliphatic hydrocarbon in a specified ratio corresponding to the aimed bulk expansion ratio of the particles. CONSTITUTION:A process for producing expanded particles by dispersing noncrosslinked resin particles of a copolymer of ethylene with 1.0-10wt.% 4-10 C alpha-olefin as a comonomer component in a dispersion medium in the presence of a blowing agent prepared by mixing carbon dioxide with an aliphatic hydrocarbon in a sealed container and releasing the resultant resin particles into a lower-pressure zone at a temperature of the resin particles by opening one end of the container, wherein the rate of the constituent gases in the mixed gas comprising carbon dioxide and an aliphatic hydrocarbon gas as the blowing agent and the amounts of the respective gases used simultaneously satisfy formulas I and II (wherein x is the number of moles of the aliphatic hydrocarbon used per 1000g of the base resin; y is the number of moles of the carbon dioxide used per 1000g of the base resin; and E is the aimed bulk expansion ratio of the expanded particles.

公开(公告)号：JPH05163381A

公开(公告)日：1993-06-29

申请号：JP35264991

申请日：1991-12-16

Applicant: JSP CORP

Inventor： KUWABARA HIDEKI ,  TSURUGAI KAZUO ,  OIKAWA MASAHARU

IPC: C08J9/18 ,  C08L71/00

Abstract: PURPOSE:To easily produce the title particles having a high expansion ratio without making cells fine even when an inorg. gaseous blowing agent, such as carbon dioxide, is used in a process wherein polymer particles are impregnated with a blowing agent and spouted out of a hermetically sealed container into a low-pressure atmosphere to expand the particles. CONSTITUTION:Polymer particles contg. 0.02-5.0wt.% inorg. substance such as a metal carbonate, bisulfate, sulfate, oxide, or chloride, clay, or a natural mineral and 0.02-5.0wt.% polypropylene glycol-polyethylene glycol copolymer are impregnated with a blowing agent and spouted out of a hermetically sealed container into a low-pressure atmosphere to expand the particles.

公开(公告)号：JPH0525315A

公开(公告)日：1993-02-02

申请号：JP20754691

申请日：1991-07-24

Applicant: JSP CORP

Inventor： KUWABARA HIDEKI ,  TSURUGAI KAZUO ,  OIKAWA MASAHARU

IPC: C08J9/18 ,  C08L23/00

Abstract: PURPOSE:To obtain the objective foamed particles having excellent weldability and giving low shrinkage after molding by using polyolefinic resin particles containing a specific amount of a quaternary ammonium salt, dispersing the resin particles in a dispersion medium in a closed vessel in the presence of carbon dioxide gas, heating the dispersion and discharging into a low-pressure zone. CONSTITUTION:Particles of a polyolefinic resin such as PP (the particle diameter is preferably 0.5-3mm) are dispersed in a dispersion medium in a closed vessel in the presence of carbon dioxide gas, heated at a temperature above the softening point of the resin particle and discharged into a low-pressure zone to obtain foamed particles. In the above process, the polyolefinic resin particle is incorporated with 0.1-5wt.% (preferably 0.1-1.0wt.%) of a quaternary ammonium salt such as octadecyl trimethyl ammonium salt.

公开(公告)号：JP2014001334A

公开(公告)日：2014-01-09

申请号：JP2012138667

申请日：2012-06-20

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： NOHARA NORINAGA ,  OIKAWA MASAHARU

IPC: C08J9/18 ,  C08J9/232

Abstract: PROBLEM TO BE SOLVED: To provide foam particles which are polypropylene-based resin foam particles that have a low apparent density (high foaming ratio) and are excellent in lightness, and can obtain a polypropylene-based resin foam particle molded body which is excellent in hue and is uniform.SOLUTION: Polypropylene-based resin foam particles contain a specific sulfate compound and a coloring agent, and have an apparent density of 7 to 80 g/L. An average foam diameter (Ls) in a surface layer section of the foam particles is 70 μm or more, and a ratio (La/Ls) between an average foam diameter (La) in the whole foam particles and the average foam diameter (Ls) in the surface layer section of the foam particles is 1.0 to 2.2.

Abstract translation: 要解决的问题：提供具有低表观密度（高发泡率）并且亮度优异的聚丙烯基树脂泡沫颗粒的泡沫颗粒，并且可以获得优异的聚丙烯类树脂泡沫颗粒成型体 色调均匀。解决方案：聚丙烯基树脂泡沫颗粒含有特定的硫酸盐化合物和着色剂，表观密度为7至80g / L。 泡沫粒子的表层部的平均泡沫直径（Ls）为70μm以上，泡沫粒子的平均泡沫直径（La）与平均泡沫直径（Ls）的比（La / Ls） ）为1.0〜2.2。

公开(公告)号：JP2013181157A

公开(公告)日：2013-09-12

申请号：JP2012047787

申请日：2012-03-05

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： CHIBA TAKUYA ,  OIKAWA MASAHARU ,  SHINOHARA MITSURU

IPC: C08J9/16 ,  C08J9/228

CPC classification number: H01B1/24 ,  B29B9/06 ,  B29K2023/06 ,  B29K2023/12 ,  B29K2105/04 ,  B29K2507/04 ,  B29K2995/0005 ,  C08J9/224 ,  C08J2201/038 ,  C08J2323/12 ,  C08J2423/06

Abstract: PROBLEM TO BE SOLVED: To provide polypropylene-based resin-foamed particles capable of producing a molded article thereof excellent in foamability, molding fusion property and stably expressing an electrostatic diffusion property having the surface resistivity of specific range while maintaining excellent characteristics peculiar to the above resin; and also to provide a molded article of polypropylene-based resin-foamed particles formed through in-mold molding of the particles.SOLUTION: A polypropylene-based resin-foamed particle having electrostatic diffusion property has: a polypropylene-based resin-foamed core layer formed by foaming the composite resin particles in which a polyolefin-based resin-covered layer including a conductive carbon black is covered on a polypropylene-based resin core layer to become an apparent density of 10-120 kg/m; and a polyolefin-based resin-covering layer covering the above foamed core layer. The polyolefin-based resin composing a polyolefin-based resin-covering layer of the foamed particle is the mixture resin of a polypropylene-based resin (A) and a polyethylene-based resin (B), and the reains (A) and (B) form the continuous and dispersing phases, respectively, in the polyolefin-based resin-covering layer. The conductive carbon black is unevenly distributed to a dispersing phase side, and the weight ratio (A:B) of resins (A) and (B) is 99.5:0.5 to 50:50. The blending amount of the carbon black is 5-30 pts.wt. based on 100 pts.wt. of the mixture of resins (A) and (B).

Abstract translation: 要解决的问题：为了提供能够制造其起泡性，成型熔融性和稳定表现具有特定范围的表面电阻率的静电扩散性的聚丙烯系树脂发泡粒子，同时保持上述特有的优异特性 树脂; 并且还提供通过模内成型颗粒形成的聚丙烯基树脂发泡颗粒的模制品。溶胶：具有静电扩散性的聚丙烯基树脂发泡颗粒具有：聚丙烯基树脂发泡芯层 通过将包含导电性炭黑的聚烯烃类树脂覆盖层覆盖在聚丙烯系树脂芯层上的复合树脂粒子发泡而形成，成为10〜120kg / m 2的表观密度; 以及覆盖上述发泡芯层的聚烯烃类树脂覆盖层。 构成发泡粒子的聚烯烃类树脂覆盖层的聚烯烃系树脂是聚丙烯系树脂（A）和聚乙烯系树脂（B）的混合树脂，以及（A）和（B ）分别在聚烯烃类树脂覆盖层中形成连续分散相。 导电性炭黑不均匀地分布在分散相侧，树脂（A）和（B）的重量比（A:B）为99.5:0.5〜50:50。 炭黑的配合量为5-30重量份 基于100重量 的树脂（A）和（B）的混合物。

公开(公告)号：JP2012107148A

公开(公告)日：2012-06-07

申请号：JP2010258473

申请日：2010-11-19

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： NISHIJIMA HIROKI ,  OIKAWA MASAHARU ,  SHIMA MASAOMI ,  NOHARA NORINAGA

IPC: C08J9/12 ,  C08J9/18 ,  C08K3/30 ,  C08K3/38 ,  C08L23/00

Abstract: PROBLEM TO BE SOLVED: To foam resin particles having as a base resin, a polyolefin resin modified by styrene, by using an inorganic physical foaming agent, thereby providing expanded particles having high expansion ratio.SOLUTION: A method includes: a modification step of adding a styrene monomer to a suspension liquid obtained by suspending in an aqueous medium, polyolefin resin seed particles that contain one or more additive selected from a borate metal salt and a sulfate salt, and then impregnating the seed particles with the styrene monomer for polymerization to obtain composite resin particles; an impregnation step of dispersing the composite resin particles together with the inorganic physical foaming agent in a dispersion medium present inside a pressure tight case, and then impregnating the composite resin particles with a foaming agent; and a foaming step of releasing the foaming agent-impregnated composite resin particles from the pressure tight case in a heat-softened state, and then foaming the foaming agent-impregnated composite resin particles to obtain the composite resin-expanded particles.

Abstract translation: 待解决的问题：通过使用无机物理发泡剂来发泡具有基础树脂的树脂颗粒，苯乙烯改性的聚烯烃树脂，从而提供具有高膨胀率的发泡颗粒。 解决方案：一种方法包括：将苯乙烯单体加入到通过悬浮在水性介质中获得的悬浮液中的改性步骤，含有一种或多种选自硼酸金属盐和硫酸盐的添加剂的聚烯烃树脂种子颗粒， 然后用种子颗粒用苯乙烯单体浸渍聚合，得到复合树脂颗粒; 将复合树脂颗粒与无机物理发泡剂一起分散在存在于耐压壳体内的分散介质中，然后用发泡剂浸渍复合树脂颗粒的浸渍步骤; 以及将发泡剂浸渍的复合树脂颗粒从加热软化状态的耐压壳体中脱模，然后使发泡剂浸渍的复合树脂颗粒发泡以获得复合树脂发泡颗粒的发泡步骤。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2012025869A

公开(公告)日：2012-02-09

申请号：JP2010166817

申请日：2010-07-26

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： SHINOHARA MITSURU ,  OIKAWA MASAHARU

IPC: C08J9/16 ,  C08L101/16

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing polylactic acid-based resin foamed particles by which a foam molded product having excellent fusibility of mutual foamed particles can stably be produced without being seized by control of crystallinity.SOLUTION: The method for producing the polylactic acid-based resin foamed particles includes: dispersing polylactic acid-based resin particles together with a dispersion medium in the presence of a blowing agent under heating conditions in a pressure-resistant vessel; releasing and foaming the resultant foamable polylactic acid-based resin particles together with the dispersion medium from the interior of the pressure-resistant vessel to a lower pressure than that of the interior of the pressure-resistant vessel. The polylactic acid-based resin particles are composed of a core layer formed from the polylactic acid-based resin and an outer layer formed from the polylactic acid-based resin. The relationship between the softening point (A) [°C] of the polylactic acid-based resin forming the core layer and the softening point (B) [°C] of the polylactic acid-based resin forming the outer layer satisfies a specific formula (1), and the endothermic quantity (R:endo) [J/g] of the polylactic acid-based resin particles determined according to a heat flux differential scanning calorimetry under specific conditions satisfies a specific formula (2).

Abstract translation: 要解决的问题：提供一种聚乳酸类树脂发泡粒子的制造方法，通过该方法可以稳定地制造具有优异的相互发泡粒子的熔融性的发泡成型体，而不会通过控制结晶性而被遏制。 解决方案：聚乳酸类树脂发泡粒子的制造方法包括：在加压条件下，在耐压容器中，在发泡剂存在下，将聚乳酸类树脂粒子与分散介质一起分散; 将得到的可发泡聚乳酸类树脂颗粒与分散介质一起从耐压容器的内部释放和发泡到比耐压容器内部更低的压力。 聚乳酸类树脂粒子由聚乳酸类树脂形成的芯层和由聚乳酸类树脂形成的外层构成。 形成芯层的聚乳酸类树脂的软化点（A）[℃]与形成外层的聚乳酸类树脂的软化点（B）[℃]之间的关系满足特定的式 （1），在特定条件下根据热通量差示扫描量热法测定的聚乳酸类树脂颗粒的吸热量（R：endo）[J / g]满足特定的式（2）。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JP2010254894A

公开(公告)日：2010-11-11

申请号：JP2009109167

申请日：2009-04-28

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： OIKAWA MASAHARU

IPC: C08J9/18 ,  C08L23/00 ,  C08L67/00 ,  C08L69/00

Abstract: PROBLEM TO BE SOLVED: To provide a manufacturing method of polyolefin resin foam particles, which can produce a low density foam particle and small foam particles each of which has uniform foam structure and small variation in density per particle in a broad range of density. SOLUTION: In the present method of manufacturing polyolefin resin particles, foam particles are produced by releasing foam resin particles obtained by impregnating the polyolefin resin particles with a foaming agent, together with a dispersed media from a sealed container, to an environment having lower pressure than the pressure inside the sealed container. The polyolefin resin foam particles contain one or more resins (A) selected from aromatic polycarbonate resins or aromatic polyester resins, and the total content of the resin (A) is 15 pts.wt. or less (not including 0) relative to 100 pts.wt. of the polyolefin resin constituting the resin particles. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 解决的问题：提供一种聚烯烃树脂发泡体颗粒的制造方法，其可以生产低密度泡沫颗粒和小泡沫颗粒，每个泡沫颗粒具有均匀的泡沫结构和在宽范围内的每个颗粒的密度变化小 密度。 解决方案：在本发明的聚烯烃树脂颗粒的制造方法中，通过将由发泡剂浸渍聚烯烃树脂颗粒而获得的泡沫树脂颗粒与来自密封容器的分散介质一起释放到具有 比密封容器内的压力低。 聚烯烃树脂泡沫颗粒含有一种或多种选自芳族聚碳酸酯树脂或芳族聚酯树脂的树脂（A），树脂（A）的总含量为15重量份。 或更少（不包括0）相对于100重量份。 构成树脂颗粒的聚烯烃树脂。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2009173021A

公开(公告)日：2009-08-06

申请号：JP2008326372

申请日：2008-12-22

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： NOHARA NORINAGA ,  SHINOHARA MITSURU ,  OIKAWA MASAHARU

IPC: B29C47/92 ,  B29C47/08 ,  B29C47/14 ,  B29L7/00 ,  C08J9/18

CPC classification number: C08J9/18 ,  B29C2947/92676 ,  B29C2947/92704 ,  B29C2947/92923 ,  C08J9/0061 ,  C08J2323/02 ,  C08J2423/00 ,  Y10T428/2991 ,  Y10T428/2993 ,  Y10T428/2995 ,  Y10T428/2996 ,  Y10T428/2998

Abstract: PROBLEM TO BE SOLVED: To provide foamed polyolefin resin beads good in fusibility of foamed beads with each other and excellent in in-mold moldability, while suppressed in shrinkage of foamed beads experienced when a polymer type antistatic agent is compounded with foamed polyolefin resin beads; to provide foamed polyolefin resin beads giving an in-mold molded article having antistatic performances, good surface conditions and excellent mechanical strength. SOLUTION: This foamed beads are obtained by expanding composite resin beads consisting of a core layer constituted by a polyolefin resin and a covering layer constituted by a polyolefin resin and covering the core layer. The polyolefin resin constituting the core layer is a crystalline polyolefin resin, and the polyolefin resin constituting the covering layer is a crystalline polyolefin resin which has a lower melting point (B) than the melting point (A) of the polyolefin resin constituting the core layer, wherein the temperature difference [(A)-(B)] between the melting point (B) and the melting point (A) of the polyolefin resin constituting the core layer is more than 0°C and 80°C or less, or a non-crystalline polyolefin resin which has a softening point (C) lower than the melting point (A) of the polyolefin resin constituting the core layer, wherein the temperature difference [(A)-(C)] between the softening point (C) and the melting point (A) of the polyolefin resin constituting the core layer is more than 0°C and 100°C or less, and 10 wt% or more and less than 50 wt% of a polymer type antistatic agent is formulated in the covering layer. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 待解决的问题：为了提供发泡粒子的熔融性良好的发泡聚烯烃树脂珠粒，并且在模制成型性方面优异，同时抑制聚合物型抗静电剂与发泡聚烯烃混合时发生的发泡粒子的收缩 树脂珠; 提供发泡聚烯烃树脂珠，得到具有抗静电性能，良好的表面条件和优异的机械强度的模内成型制品。 解决方案：通过将由聚烯烃树脂构成的芯层和由聚烯烃树脂构成的覆盖层构成的复合树脂珠粒扩展并覆盖芯层，得到该发泡粒子。 构成芯层的聚烯烃树脂是结晶聚烯烃树脂，构成覆盖层的聚烯烃树脂是具有比构成芯层的聚烯烃树脂的熔点（A）低的熔点（B）的结晶聚烯烃树脂 其中构成芯层的聚烯烃树脂的熔点（B）和熔点（A）之间的温差[（A） - （B）]大于0℃和80℃以下，或 软化点（C）低于构成芯层的聚烯烃树脂的熔点（A）的非结晶性聚烯烃树脂，其中软化点（C）的温度差[（A） - （C） ），构成芯层的聚烯烃树脂的熔点（A）大于0℃，100℃以下，聚合型抗静电剂的10重量％以上且小于50重量％ 覆盖层。 版权所有（C）2009，JPO＆INPIT