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1. 发明授权

EP3438174B1 THERMOPLASTIC POLYURETHANE FOAM PARTICLES 有权
公开(公告)号：EP3438174B1
公开(公告)日：2020-07-29
申请号：EP17774909.0
申请日：2017-03-27
申请人： JSP Corporation
发明人： KOSHITA, Nobumasa , HAYASHI, Tatsuya , OIKAWA, Masaharu
IPC分类号： C08J9/18 , C08J9/12 , C08J9/232

2. 发明公开

EP4245801A1 USE OF POLYAMIDE-BASED RESIN EXPANDED BEADS FOR PRODUCING A FIBER-REINFORCED COMPOSITE ARTICLE, AND NOVEL FIBER-REINFORCED COMPOSITE ARTICLE 审中-实审
公开(公告)号：EP4245801A1
公开(公告)日：2023-09-20
申请号：EP22216704.1
申请日：2022-12-27
申请人： JSP Corporation
发明人： HAYASHI, Tatsuya , YAMANAKA, Ryo , SUENAGA, Katsuyuki
IPC分类号： C08J9/16 , B29C44/44 , B32B5/18 , C08J9/232 , C08J9/236 , C08J9/18 , B32B5/24 , C08J9/12
摘要： Use of polyamide-based resin expanded beads having a specific cell wall thickness and a specific crystallite size for forming a fiber-reinforced composite article constituted of a composite skin and a core that is bonded to the skin and that includes the polyamide-based resin expanded beads which are bonded together.

3. 发明公开

EP3438175A1 THERMOPLASTIC POLYURETHANE FOAMED PARTICLES AND METHOD FOR MANUFACTURING THERMOPLASTIC POLYURETHANE FOAMED PARTICLE MOLDED ARTICLE 有权
公开(公告)号：EP3438175A1
公开(公告)日：2019-02-06
申请号：EP17773665.9
申请日：2017-02-03
申请人： JSP Corporation
发明人： OIKAWA, Masaharu , NISHIJIMA, Koki , KOSHITA, Nobumasa , HAYASHI, Tatsuya
IPC分类号： C08J9/224 , B29C44/00 , B29K75/00
摘要： The present invention is concerned with expanded beads of thermoplastic polyurethane in which a water-soluble anionic surfactant is attached at 50 mg/m 2 to 1,000 mg/m 2 onto the surfaces of expanded beads of thermoplastic polyurethane having a dispersant attached thereto; and a method for producing an expanded beads molded article, including filling the expanded beads of thermoplastic polyurethane in a mold for molding and heating with a water vapor to mutually fuse the expanded beads with each other. The present invention provides expanded beads from which an expanded TPU beads molded article having excellent tensile strength and a method for producing an expanded TPU beads molded article.

4. 发明公开

EP3988605A1 POLYAMIDE RESIN FOAMED PARTICLES AND METHOD FOR PRODUCING SAME 有权
公开(公告)号：EP3988605A1
公开(公告)日：2022-04-27
申请号：EP21201164.7
申请日：2019-09-04
申请人： JSP Corporation
发明人： HAYASHI, Tatsuya , HIRA, Akinobu
IPC分类号： C08J9/18 , C08J9/12 , C08J9/224 , C08J9/232
摘要： A polyamide-based resin expanded bead comprising a foam layer formed by expanding a polyamide-based resin, wherein on a first DSC curve and a second DSC curve, the first DSC curve has a melting peak (intrinsic peak) having a peak top temperature on a low temperature side equal to or lower than a peak top temperature of a melting peak of the second DSC curve and a melting peak (high temperature peak) having a peak top temperature on a high temperature side exceeding the peak top temperature of the second DSC curve, and, the peak top temperature of the melting peak of the second DSC curve is 180°C or higher and 280°C or lower, and the polyamide-based resin expanded bead has an apparent density of 10 to 300 kg/m 3 and a closed cell ratio of 85% or more.

5. 发明公开

EP3848408A1 POLYAMIDE RESIN FOAMED PARTICLES AND METHOD FOR PRODUCING SAME 审中-公开
公开(公告)号：EP3848408A1
公开(公告)日：2021-07-14
申请号：EP19857846.0
申请日：2019-09-04
申请人： JSP Corporation
发明人： HAYASHI, Tatsuya , HIRA, Akinobu
IPC分类号： C08J9/18
摘要： A polyamide-based resin expanded bead comprising a foam layer formed by expanding a polyamide-based resin, wherein on a first DSC curve and a second DSC curve, the first DSC curve has a melting peak (intrinsic peak) having a peak top temperature on a low temperature side equal to or lower than a peak top temperature of a melting peak of the second DSC curve and a melting peak (high temperature peak) having a peak top temperature on a high temperature side exceeding the peak top temperature of the second DSC curve, and, the peak top temperature of the melting peak of the second DSC curve is 180°C or higher and 280°C or lower, and the polyamide-based resin expanded bead has an apparent density of 10 to 300 kg/m 3 and a closed cell ratio of 85% or more.

6. 发明公开

EP3546506A1 EXPANDED THERMOPLASTIC POLYURETHANE PARTICLES AND EXPANDED THERMOPLASTIC POLYURETHANE PARTICLE MOLDED ARTICLE 有权
公开(公告)号：EP3546506A1
公开(公告)日：2019-10-02
申请号：EP17874696.2
申请日：2017-11-15
申请人： JSP Corporation
发明人： HAYASHI, Tatsuya , KOSHITA, Nobumasa , OIKAWA, Masaharu
IPC分类号： C08J9/16
摘要： The present invention provides expanded beads of thermoplastic polyurethane, wherein the thermoplastic polyurethane constituting the expanded beads is an ether-based thermoplastic polyurethane, and a difference (T 1 - T 2 ) between a melting peak temperature (T 1 ) and a melting peak temperature (T 2 ) is from 0 to 8°C, wherein the melting peak temperature (T 1 ) is a melting peak temperature at the time of first heating in a DSC curve obtained by heating the expanded beads from 20°C to 260°C at a heating rate of 10°C/min, the melting peak temperature (T 2 ) is a melting peak temperature at the time of second heating in a DSC curve obtained by cooling from 260°C to 20°C at a cooling rate of 10°C/min after the first heating and further heating again from 20°C to 260°C at a heating rate of 10°C/min, and the DSC curves are obtained by the heat flux differential scanning calorimetry in conformity with JIS K7121-1987. The expanded beads of thermoplastic polyurethane not only have excellent surface appearance and fusion bonding properties but also have a low shrinkage factor.

7. 发明公开

EP3480243A1 THERMOPLASTIC POLYURETHANE FOAM PARTICLE MOLDED ARTICLE AND METHOD FOR PRODUCING SAME, AND THERMOPLASTIC POLYURETHANE FOAM PARTICLES 有权
公开(公告)号：EP3480243A1
公开(公告)日：2019-05-08
申请号：EP17819683.8
申请日：2017-05-12
申请人： JSP Corporation
发明人： HAYASHI, Tatsuya , KOSHITA, Nobumasa , OIKAWA, Masaharu
IPC分类号： C08J9/18 , C08J9/228 , C08L75/04
摘要： An in-mold molded article of expanded thermoplastic polyurethane beads containing a colorant, wherein when an average surface cell wall thickness of the in-mold molded article is 20 µm or more, the expanded TPU beads molded article is high in uniformity of color and good in color developing properties. Expanded thermoplastic polyurethane beads containing a colorant, wherein when an apparent density of the expanded beads is 80 to 300 kg/m 3 , an average cell diameter of the expanded beads is 100 to 400 µm, and an average surface cell wall thickness of the expanded beads is 15 µm or more, a molded article resulting from in-mold molding of the expanded beads is suppressed in color unevenness and has high uniformity of color.

8. 发明公开

EP3438174A1 THERMOPLASTIC POLYURETHANE FOAM PARTICLES 有权
公开(公告)号：EP3438174A1
公开(公告)日：2019-02-06
申请号：EP17774909.0
申请日：2017-03-27
申请人： JSP Corporation
发明人： KOSHITA, Nobumasa , HAYASHI, Tatsuya , OIKAWA, Masaharu
IPC分类号： C08J9/18 , C08J9/12 , C08J9/232
摘要： Provided are spherical expanded beads obtained through expansion of thermoplastic polyurethane beads, wherein a bead mass of the expanded beads is 3 to 12 mg, and a ratio of a long diameter to a short diameter of the expanded bead (long diameter/short diameter) is 1.5 or less; an apparent density of the expanded beads is 80 to 300 kg/m 3 ; an average cell diameter Da of the expanded beads is 80 to 300 µm; and a closed cell ratio of the expanded beads is 80% or more.

9. 发明公开

EP4317275A1 METHOD FOR PRODUCING POLYAMIDE RESIN FOAM PARTICLES 审中-实审
公开(公告)号：EP4317275A1
公开(公告)日：2024-02-07
申请号：EP22779748.7
申请日：2022-03-01
申请人： JSP Corporation
发明人： HAYASHI, Tatsuya
IPC分类号： C08J9/16
摘要： A method for producing a polyamide-based resin expanded bead, the method comprising expanding a polyamide-based resin bead using a physical blowing agent, wherein the polyamide-based resin bead comprises a coloring pigment and a higher fatty acid metal salt having 12 to 24 carbon atoms; a metal in the higher fatty acid metal salt is one or more metals selected from the group consisting of magnesium, aluminum, and zinc; and a content of the higher fatty acid metal salt in the polyamide-based resin bead is 500 to 5000 mass ppm.

10. 发明公开

EP4108715A1 POLYAMIDE RESIN FOAM PARTICLES, POLYAMIDE RESIN FOAM PARTICLE MOLDED ARTICLE, AND METHOD FOR PRODUCING POLYAMIDE RESIN FOAM PARTICLES 审中-实审
公开(公告)号：EP4108715A1
公开(公告)日：2022-12-28
申请号：EP21757785.7
申请日：2021-02-01
申请人： JSP Corporation
发明人： HAYASHI, Tatsuya
IPC分类号： C08J9/16
摘要： Provided are polyamide-based resin expanded beads capable of providing a molded article of polyamide-based resin expanded beads having more excellent moldability than in the past, a molded article of polyamide-based resin expanded beads molded using the polyamide-based resin expanded beads, and a method for producing the polyamide-based resin expanded beads.
The polyamide-based resin expanded beads contain a polyamide-based resin as a base material resin, wherein: the polyamide-based resin expanded beads have a crystal structure in which an intrinsic peak of the polyamide-based resin and a high-temperature peak having a peak top temperature on a higher temperature side than a peak top temperature of the intrinsic peak appear in a DSC curve obtained under a predetermined condition 1; a amount of heat of fusion of the high-temperature peak is within a range of 5 J/g or more and 50 J/g or less; and a coefficient of variation of the amount of heat of fusion of the high-temperature peak is 20% or less. The polyamide-based resin expanded beads are produced by in-mold molding of the polyamide-based resin expanded beads. A method for producing the polyamide-based resin expanded beads includes: an expanding agent applying step of impregnating a polyamide-based resin dispersed in an aqueous dispersion medium in a sealed container with an expanding agent to obtain expandable polyamide-based resin beads; and an expanding step of releasing the expandable polyamide-based resin beads from the sealed container under a pressure lower than a pressure in the sealed container to expand the polyamide-based resin beads. In the expanding step, when the expandable polyamide-based resin beads are released from the sealed container, a temperature in the sealed container is adjusted to be raised at a rate of 0.3°C or higher and 1.5°C or lower per 10 minutes.

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