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公开(公告)号：WO0224794A9
公开(公告)日：2002-05-10
申请号：PCT/JP0108187
申请日：2001-09-20
Applicant: JSP CORP , SASAKI HIDEHIRO , HIRA AKINOBU , HASHIMOTO KEIICHI , TOKORO HISAO
Inventor： SASAKI HIDEHIRO , HIRA AKINOBU , HASHIMOTO KEIICHI , TOKORO HISAO
CPC classification number: C08J9/224 , C08J2323/10 , C08L23/10 , C08L2203/14
Abstract: Expanded, substantially non-crosslinked polypropylene resin beads capable of producing a high rididity foamed molding at a relatively low temperature. The beads are produced by a process including a step of dispersing substantially non-crosslinked polypropylene resin particles in a dispersing medium containing an organic peroxide to obtain a dispersion, a step of heating the dispersion to decompose the organic peroxide and to modify the surface of the surface-modified polypropylene resin particles, and a step of expanding the non-crosslinked, surface-modified polypropylene resin particles using a blowing agent.
Abstract translation: 膨胀的基本上非交联的聚丙烯树脂珠粒能够在相对较低的温度下产生高吸收性发泡模制品。 通过包括以下步骤的方法生产珠粒：将基本上未交联的聚丙烯树脂颗粒分散在含有机过氧化物的分散介质中以获得分散体，加热分散体以分解有机过氧化物和改性 表面改性聚丙烯树脂颗粒，以及使用发泡剂使未交联的表面改性聚丙烯树脂颗粒发泡的步骤。
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公开(公告)号：WO03037971A3
公开(公告)日：2003-09-04
申请号：PCT/JP0211391
申请日：2002-10-31
Applicant: JSP CORP , SASAKI HIDEHIRO , HIRA AKINOBU , HASHIMOTO KEIICHI , TOKORO HISAO , SHINOHARA MITSURU , TOKIWA TOMOO
Inventor： SASAKI HIDEHIRO , HIRA AKINOBU , HASHIMOTO KEIICHI , TOKORO HISAO , SHINOHARA MITSURU , TOKIWA TOMOO
CPC classification number: C08J9/224 , C08J9/18 , C08J2323/12
Abstract: A process of producing a foamed molding, wherein expanded, substantially non-crosslinked polypropylene-based resin beads are heated in a mold to fuse-bond the beads together into a unitary body. Each of the expanded beads has been surface-modified with an organic peroxide.
Abstract translation: 制造发泡模制品的方法，其中将膨胀的基本上未交联的聚丙烯基树脂珠粒在模具中加热，以将珠子熔合在一起成为整体。 每个发泡珠粒都用有机过氧化物进行表面改性。
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公开(公告)号：WO0224794A3
公开(公告)日：2002-12-05
申请号：PCT/JP0108187
申请日：2001-09-20
Applicant: JSP CORP , SASAKI HIDEHIRO , HIRA AKINOBU , HASHIMOTO KEIICHI , TOKORO HISAO
Inventor： SASAKI HIDEHIRO , HIRA AKINOBU , HASHIMOTO KEIICHI , TOKORO HISAO
CPC classification number: C08J9/224 , C08J2323/10 , C08L23/10 , C08L2203/14
Abstract: Expanded, substantially non-crosslinked polypropylene resin beads capable of producing a high rididity foamed molding at a relatively low temperature. The beads are produced by a process including a step of dispersing substantially non-crosslinked polypropylene resin particles in a dispersing medium containing an organic peroxide to obtain a dispersion, a step of heating the dispersion to decompose the organic peroxide and to modify the surface of the surface-modified polypropylene resin particles, and a step of expanding the non-crosslinked, surface-modified polypropylene resin particles using a blowing agent.
Abstract translation: 膨胀的，基本上非交联的聚丙烯树脂珠，其能够在相对较低的温度下产生高的吸附发泡成型。 珠粒通过包括将基本上未交联的聚丙烯树脂颗粒分散在含有机过氧化物的分散介质中以获得分散体的步骤的方法制备，加热分散体以分解有机过氧化物并改性表面的步骤 表面改性聚丙烯树脂颗粒，以及使用发泡剂使未交联的表面改性聚丙烯树脂颗粒膨胀的步骤。
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4.发明公开
公开(公告)号：EP1016511A4
公开(公告)日：2005-08-03
申请号：EP98911136
申请日：1998-03-31
Applicant: JSP CORP
Inventor： TOKORO HISAO , YAMAZAKI HIROSHI , SHIOYA SATORU , SHINOHARA MITSURU , HIRA AKINOBU
IPC: C08J9/232 , B29C39/10 , B29C67/20 , B29K23/00 , B32B5/18 , B32B27/32 , G06F13/00 , G06F13/36 , G06F13/40 , G06F13/42 , G10K11/162 , G11C7/00 , G11C11/401 , B29C44/00 , G10K11/16
CPC classification number: G06F13/405 , B29C44/445 , B29K2995/0002 , G06F13/4059 , G10K11/162
Abstract: A foamed body produced by using expandable particles, and having communicating pores has sound absorption characteristics, and can be used as a sound absorptive material. However, a sound absorptive material comprising such a foamed body could not attain a high sound absorbing coefficient in a wide acoustic frequency band. The subject mold body is produced by using resin particles and has sound absorption characteristics, the resin particles having through pores and a porosity in a most densely packed state of 45-80 %. The void ratio of the molded body is 10-60 %, and the bulk density thereof 0.01-0.6 g/cm . The molded body has not less than 3 continuous central frequency measuring points at which the sound absorbing coefficient is not less than 70 %, and not less than 7 continuous central frequency measuring points at which the sound absorbing coefficient is not less than 50 % in the sound absorbing coefficients at the central frequencies of 250, 315, 400, 500, 630, 800, 1000, 1250, 1600, 2000, 2500 and 3150 (Hz) which are determined by a sound absorbing coefficient measuring method according to the reverberation method under JIS A1409.
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5.发明公开FOAMED PARTICLES OF CROSS-LINKED ALIPHATIC POLYESTER RESINS, PROCESS FOR PRODUCING THEM, AND FOAMED MOLDINGS OBTAINED FROM THEM 失效发泡粒子由交联的脂肪族聚酯，方法和由此制得膨胀TRIMS
公开(公告)号：EP0989159A4
公开(公告)日：2002-01-16
申请号：EP98921771
申请日：1998-05-22
Applicant: JSP CORP
Inventor： TOKORO HISAO , SHIOYA SATORU , SHINOHARA MITSURU
IPC: C08J9/22 , C08J9/16 , C08L101/16 , C08J9/18 , C08J9/228
CPC classification number: C08J9/16 , C08J2367/02
Abstract: Foamed particles of cross-linked aliphatic polyester resins having a gel fraction of at least 5 % by weight. The foamed particles can be obtained by cross-linking non-cross-linked aliphatic polyester resin particles with a cross-linking agent containing an organic peroxide to obtain cross-linked resin particles having a gel fraction of at least 5 % by weight, and foaming the cross-linked resin particles. Biodegradable foamed moldings are obtained by thermally foaming the foamed cross-linked aliphatic polyester resin particles in a mold.
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Patent Agency Ranking
公开(公告)号：EP0918066A4
公开(公告)日：2002-06-19
申请号：EP97934755
申请日：1997-08-08
Applicant: JSP CORP
Inventor： TSURUGAI KAZUO , TOKORO HISAO
CPC classification number: C08J9/232 , C08J9/228 , C08J2323/10 , C08J2323/12 , C08L23/12 , C08L2314/06 , Y10S526/943 , Y10T428/249953 , C08L2666/04
Abstract: A conventional shock absorbing material formed from a foamed molding of polypropylene resin particles has an excellent cushioning property and impact resilience as compared with shock absorbing materials formed of other material resins, but is not satisfactory in terms of rigidity and energy absorbing efficiency. The present invention provides a shock absorbing material formed from an in-mold formed molding manufactured by using foamed particles, of which a base material resin is a propylene homopolymer prepared with the use of a metallocene polymerization catalyst. The base material resin has a tensile elastic modulus of 15000 kgf/cm2 or more, and the in-mold formed molding has such a crystal structure that an intrinsic peak a and a high temperature peak b appear as endothermic peaks in the DSC curve obtained by differential scanning calorimetry of the molding. The high temperature peak b appears on a higher temperature side than the inherent peak a does, and has a heat quantity of 25 J/g or more.
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7.发明公开
公开(公告)号：EP1036814A4
公开(公告)日：2001-07-18
申请号：EP98956020
申请日：1998-12-01
Applicant: JSP CORP
Inventor： SASAKI HIDEHIRO , SAKAGUCHI MASAKAZU , AKIYAMA MITSUHIRO , TOKORO HISAO
CPC classification number: C08J9/18 , C08J9/16 , C08J2203/06 , C08J2323/12
Abstract: Expandable beads comprising as the base resin a propylene random copolymer prepared by copolymerizing propylene with one or more comonomers selected from the group consisting of ethylene and α-olefins having 4 or more carbon atoms in the presence of a metallocene polymerization catalyst, wherein the propylene random copolymer is an isotactic one having a melting point exceeding 140 °C and a melt flow rate of 12 g/10 min or below. For example, propylene/ethylene random copolymers are suitably usable as the base resin. Products of in-mold expansion are produced by packing the expandable beads in a mold and expanding the beads by steam heating to fuse the beads with each other into a cavity-shaped product.
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公开(公告)号：EP1403305A4
公开(公告)日：2004-12-15
申请号：EP02736043
申请日：2002-06-10
Applicant: JSP CORP
Inventor： SASAKI HIDEHIRO , OGIYAMA KAZUYA , HIRA AKINOBU , HASHIMOTO KEIICHI , YANAGISAWA HIROKI , TOKORO HISAO
CPC classification number: C08J9/18 , B29C44/445 , C08J2203/06 , C08J2323/12
Abstract: A method for producing polypropylene type resin foamed particles wherein polypropylene type resin particles impregnated with a physical foaming agent and heated together with an aqueous medium and a dispersing agent are released out of a closed vessel to a low pressure region, to produce foamed particles, characterized in that the aqueous medium has an electric conductivity of 0.00 mS/m to 20.00 mS/m. The method can be used for producing good polyolefin resin foamed particles free from the mutual adhesion during its production with almost same amounts, independent of locations of plants for production, of a dispersing agent added for preventing the adhesion of particles in a heat treatment process for impregnating resin particles dispersed in an aqueous medium in a closed vessel with a foaming agent, and of the dispersing agent attached to the resultant foamed articles. The above polyolefin resin foamed particles exhibit good melting and mutual adhesion in a step of forming them and can provide a formed article having excellent mechanical strength, and further can be produced with stability.
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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
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.
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公开(公告)号：EP1055701A4
公开(公告)日：2004-12-15
申请号：EP99901121
申请日：1999-01-20
Applicant: JSP CORP
Inventor： SHIOYA SATORU , SHINOHARA MITSURU , HIRA AKINOBU , TOKORO HISAO
IPC: B60R19/22 , B60R19/03 , C08J9/18 , C08J9/228 , C08J9/232 , F16F1/36 , F16F7/00 , F16F15/08 , C08J9/12
CPC classification number: C08J9/232 , B60R19/03 , B60R19/22 , C08J9/18 , C08J2201/034 , C08J2203/06 , C08J2369/00
Abstract: A polycarbonate resin foam having a density D of 0.6g/cm3 or less, and also having a value of E¿80?/D which is obtained by dividing an energy absorbance at 50 % compression at 80 °C, E80 kg.cm/cm?3¿, by the density of the foam, of 30 (kg.cm/cm?3)/(g/cm3¿) or more. A shock absorber for a vehicle comprises a core made of this resin foam and a skin covering the surface of the core.
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