公开(公告)号：EP2407504A4

公开(公告)日：2012-12-19

申请号：EP10750529

申请日：2010-03-05

Applicant: JSP CORP

Inventor： SAKAGUCHI MASAKAZU ,  NISHIJIMA KOUKI ,  OIKAWA MASAHARU

IPC: C08J9/18 ,  C08J9/12 ,  C08J9/232 ,  C08L27/16

CPC classification number: C08J9/122 ,  C08J9/18 ,  C08J9/232 ,  C08J2203/06 ,  C08J2327/16

公开(公告)号：EP2161298A4

公开(公告)日：2011-08-10

申请号：EP08752701

申请日：2008-05-14

Applicant: JSP CORP

Inventor： SASAKI HIDEHIRO ,  OIKAWA MASAHARU ,  NOHARA TOKUNOBU

IPC: C08J9/18 ,  C08F10/06 ,  C08J9/232

CPC classification number: C08J9/122 ,  C08F110/06 ,  C08F210/06 ,  C08J9/0061 ,  C08J9/18 ,  C08J9/232 ,  C08J2323/12 ,  C08J2423/00 ,  C08F2500/18 ,  C08F2500/21 ,  C08F210/16

公开(公告)号：EP0905176A4

公开(公告)日：2000-11-22

申请号：EP97926228

申请日：1997-06-11

Applicant: JSP CORP

Inventor： OIKAWA MASAHARU ,  TSURUGAI KAZUO ,  TOKORO HISAO

IPC: C08J9/00 ,  C08J9/18 ,  C08J9/16

CPC classification number: C08J9/18 ,  C08J9/0066 ,  C08J2201/03 ,  C08J2323/02

Abstract: When it is intended to obtain foamed particles having a high expansion ratio upon the production of foamed particles of a polyolefin resin, there has been a problem that foamed particles uneven in cell diameter are produced. Any molded article produced with such foamed particles has involved a drawback that it is poor in dimensional stability, and its surface profile becomes uneven. The invention relates to foamed particles comprising a polyolefin resin as a base resin, wherein the base resin contains a metal salt (excluding alkali metal salts) of boric acid in such a manner that the content of the metal salt of boric acid in the raw resin amounts to 50-50,000 ppm. Zinc borate, magnesium borate or the like is used as the metal salt of boric acid. The foamed particles are obtained by using a polyolefin resin containing the metal salt of boric acid to prepare resin particles, dispersing the resin particles in a dispersion medium in a closed vessel and at the same time impregnating the resin particles with a foaming agent, holding the resin particles in a heated and pressurized atmosphere, and then releasing the resin particles together with the dispersion medium into an atmosphere of a pressure lower than the internal pressure of the vessel to expand the resin particles.

公开(公告)号：JP2014118548A

公开(公告)日：2014-06-30

申请号：JP2012277245

申请日：2012-12-19

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： SHINOHARA MITSURU ,  OIKAWA MASAHARU

IPC: C08J9/18 ,  B29C44/00 ,  B29K27/12 ,  B29K105/04

CPC classification number: C08F14/22 ,  C08F214/22 ,  C08J9/122 ,  C08J9/125 ,  C08J9/18 ,  C08J9/232 ,  C08J2201/034 ,  C08J2203/06 ,  C08J2203/10 ,  C08J2205/044 ,  C08J2205/052 ,  C08J2327/16

Abstract: PROBLEM TO BE SOLVED: To provide a polyvinylidene fluoride resin foamed particle having small shrinkage percentage just after manufacturing foamed particle and capable of in-mold molding with metal mold, excellent in reproducibility of shapes of molding molds and capable of providing formed particle molded body having dimensional stability.SOLUTION: There is provided a polyvinylidene fluoride resin foamed particle containing a polyvinylidene fluoride resin as a base material resin, having a bend elastic constant of the polyvinylidene fluoride resin of 450 MPa or more, melt flow rate (MFR) at 230°C with load of 2.16 kg of the polyvinylidene fluoride resin of 1 g/10 min. or more, apparent density of the foamed particle of 25 to 150 g/L and closed cell rates of the foamed particle of 80% or more.

Abstract translation: 要解决的问题：为了提供刚刚制造泡沫颗粒后的收缩率小且能够用金属模具进行模内成型的聚偏二氟乙烯树脂发泡颗粒，成型模具的形状的再现性优异，并且能够提供具有 尺寸稳定性。解决方案：提供一种聚偏二氟乙烯树脂发泡颗粒，其含有聚偏二氟乙烯树脂作为基材树脂，聚偏二氟乙烯树脂的弯曲弹性常数为450MPa以上，熔体流动速率（MFR）为230℃ C，负载2.16kg聚偏二氟乙烯树脂1g / 10分钟。 以上，发泡粒子的表观密度为25〜150g / L，发泡粒子的闭孔率为80％以上。

公开(公告)号：JP2013231205A

公开(公告)日：2013-11-14

申请号：JP2013172548

申请日：2013-08-22

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： NOHARA NORINAGA ,  SHINOHARA MITSURU ,  OIKAWA MASAHARU

IPC: 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 a polyolefin-based resin foaming particle suppressed in shrinkage of the foamed particle, which is seen when a polymeric antistatic agent is blended in the polyolefin-based resin foaming particle, good in fusibility of foamed particles, and excellent in in-mold moldability, and a polyolefin-based resin foaming particle having antistatic performance utilizing the foamed particle, and capable of providing an in-mold molding good in the surface state and excellent in mechanical strength.SOLUTION: A foamed particle is obtained by foaming a composite resin particle composed of a core layer constituted of a polyolefin-based resin, and a covering layer covering the core layer and constituted of a polyolefin-based resin, and has an apparent density of 10 to 180 kg/m, wherein the polyolefin-based resin constituting the core layer is a crystalline polyolefin-based resin; the polyolefin-based resin constituting the covering layer is a crystalline polyolefin-based resin having a lower melting point (B) than the melting point (A) of the polyolefin-based resin constituting the core layer, wherein the difference [(A)-(B)] between the melting point (B) and the melting point (A) of the polyolefin-based resin constituting the core layer is >0°C and ≤80°C, or a non-crystalline polyolefin-based resin having a lower softening point (C) than the melting point (A) of the polyolefin-based resin constituting the core layer, and the difference [(A)-(C)] between the softening point (C) and the polyolefin-based resin constituting the core layer is >0°C and ≤100°C, wherein a polymeric antistatic agent of a polyolefin-polyethylene oxide block copolymer-type or a polyether ester amide-type is blended in ≥10 wt% and

Abstract translation: 要解决的问题：为了提供抑制发泡粒子的收缩抑制的聚烯烃系树脂发泡粒子，当在聚烯烃系树脂发泡粒子中配合高分子抗静电剂时，发泡粒子的熔融性良好， 模内成型性以及使用该发泡粒子的抗静电性能的聚烯烃类树脂发泡粒子，能够提供良好的表面状态的模内成形性和优异的机械强度。解决方案：发泡粒子通过 发泡由聚烯烃类树脂构成的芯层构成的复合树脂颗粒和覆盖芯层并由聚烯烃类树脂构成的覆盖层，其表观密度为10〜180kg / m 2，其中， 构成芯层的聚烯烃系树脂为结晶性聚烯烃系树脂， 构成覆盖层的聚烯烃类树脂是具有比构成芯层的聚烯烃类树脂的熔点（A）低的熔点（B）的结晶聚烯烃类树脂，其中[（A） - 构成芯层的聚烯烃类树脂的熔点（B）和熔点（A）之间的比例（B）]为> 0℃，≤80℃，或者是具有 构成芯层的聚烯烃类树脂的熔点（℃）低于软化点（C），软化点（C）与构成的聚烯烃系树脂的差异[（A） - （C）] 芯层为> 0℃和≤100℃，其中聚烯烃 - 聚环氧乙烷嵌段共聚物型或聚醚酯酰胺型聚合抗静电剂在≥10重量％和<50重量％ 覆盖层。

公开(公告)号：JP2012040787A

公开(公告)日：2012-03-01

申请号：JP2010184436

申请日：2010-08-19

Applicant: Jsp Corp ,  株式会社ジェイエスピー

Inventor： OIKAWA MASAHARU ,  SHINOHARA MITSURU ,  SASAKI HIDEHIRO

IPC: B32B27/36 ,  B32B5/18 ,  B32B5/24 ,  C08J9/22 ,  C08J9/35

Abstract: PROBLEM TO BE SOLVED: To provide a composite laminated body comprising a foamed particle molding excelling in solvent resistance and excelling in adhesiveness to a thermosetting resin, and a thermosetting resin layer.SOLUTION: This composite laminated body comprises a polylactic acid-based resin formed particle molding, and a thermosetting resin layer stuck and laminated on a surface of the formed particle molding.

Abstract translation: 解决问题的方案：提供一种复合层叠体，其包含耐热溶性优异且对热固性树脂的粘合性优异的发泡颗粒成型体和热固性树脂层。 解决方案：该复合层压体包括形成颗粒成型的聚乳酸类树脂和粘结并层压在成形颗粒成型体的表面上的热固性树脂层。 版权所有（C）2012，JPO＆INPIT

公开(公告)号：JPH08277340A

公开(公告)日：1996-10-22

申请号：JP10470195

申请日：1995-04-05

Applicant: JSP CORP

Inventor： TSURUGAI KAZUO ,  TOKORO TOSHIO ,  OIKAWA MASAHARU

IPC: C08J9/18 ,  C08F110/06 ,  C08J9/16 ,  C08L23/10 ,  C08L23/12

Abstract: PURPOSE: To obtain foam grains which is made of a polypropylene homopolymer as a base resin, has a wide range of the molding temperature, high stiffness and good moldability, and is useful as an energy absorber. CONSTITUTION: This foamed grain comprises a polypropylene homopolymer as a base resin, has a tensile modulus of 15,000-25,000kg/cm and gives the DSC (differential scanning calorimetric) curve having the high-temperature peak a of 30-60lug in the DS calorimetry (where the high-temperature peak a means the endothermic peak appearing on the high temperature side of the characteristic peak b among several endothermic peaks obtained, when 2-4mg of the foamed grains are heated up to 220 deg.C in a DS calorimeter at a rate of 10min). The total calorie of the endothermic peaks in the DSC curve is preferably

公开(公告)号：JPH08113667A

公开(公告)日：1996-05-07

申请号：JP20516695

申请日：1995-07-19

Applicant: JSP CORP

Inventor： TOKORO TOSHIO ,  TSURUGAI KAZUO ,  OIKAWA MASAHARU

IPC: C08J9/12 ,  C08J9/228 ,  C08J9/232

Abstract: PURPOSE: To produce a molded foam which can recover from the molding shrinkage by aging at a lower temp. in a shorter time than that required for a convnetional molded foam and to provide a process for producing the same. CONSTITUTION: The molded foam is formed by molding foamed particles in a mold, has a density of 0.06g/cm or lower, and contains, in each particle, 0.2-5.0wt.% ester of a polyhydric alcohol having 3-7 hydroxyl groups with a 15-23C fatty acid. The foam is produced by filling a mold with foamed linear low-density polyethylene resin particles contg. 0.2-5.0wt.% ester of a 15-23C fatty acid with a polyhydric alcohol having 3-7 hydroxyl groups and having a bulk density of 0.06g/cm or lower and heating the mold contents to fuse them together into a molded item according to the shape of the mold.

公开(公告)号：JPH04283250A

公开(公告)日：1992-10-08

申请号：JP7229491

申请日：1991-03-12

Applicant: JSP CORP

Inventor： KUWABARA HIDEKI ,  TSURUGAI KAZUO ,  OIKAWA MASAHARU

IPC: C08J9/16 ,  C08K3/00 ,  C08L23/00 ,  C08L23/06 ,  C08L23/16

Abstract: PURPOSE:To produce the title particles which give expanded particles having relatively large cells and give a molding excellent in dimensional stability without fail even when expanded to a high expansion ration and molded in a mold. CONSTITUTION:The title particles are produced by heating a dispersion of resin particles contg. 100 pts.wt. resin blend consisting of 70-95 pts.wt. linear low-density polyethylene resin and 5-30 pts.wt. low-density polyethylene resin, 0.02-5 pts.wt. water-sol. or porous inorg. material, and carbon dioxide as a blowing agent in an aq. dispersion medium in a hermetrically sealed container to a temp. in the larger of the m.p. of the resin + or -10 deg.C and discharging the mixture from the container to a low-pressure zone.

公开(公告)号：JPH04189840A

公开(公告)日：1992-07-08

申请号：JP31986290

申请日：1990-11-22

Applicant: JSP CORP

Inventor： KUWABARA HIDEKI ,  TSURUGAI KAZUO ,  OIKAWA MASAHARU

IPC: C08J9/12 ,  C08J9/00 ,  C08J9/16 ,  C08J9/18 ,  C08K9/12

Abstract: PURPOSE:To obtain the subject particles excellent in productivity with hardly any environmental disruption and variation in foaming by dispersing specific polymer particles in the presence of carbon dioxide in a dispersion medium in a hermetically sealed container, heating the resultant dispersion, then discharging the heated dispersion from the container into an atmosphere under a lower pressure than that in the abovementioned container and, foaming the polymer particles. CONSTITUTION:Polymer particles containing an alumina-based adsorbent having 0.1-10mum particle size at >=1.15 molar ratio of SiO2/Al2O3 [the adsorbent in an amount of preferably 0.05-1 pt.wt. based on 100 pts.wt. polymer] are dispersed in a dispersion medium such as water in the presence of carbon dioxide (used in an amount of 5-50 pts.wt.) in a hermetically sealed container and the resultant dispersion is heated at a temperature above the softening temperature of the aforementioned polymer particles. The prepared polymer particles impregnated with the carbon dioxide and the dispersion medium are subsequently discharged from the interior of the container into an atmosphere under a lower pressure than that in the aforementioned container to expand the polymer particles. Thereby, the objective particles are obtained.