公开(公告)号：US20220017421A1

公开(公告)日：2022-01-20

申请号：US17311531

申请日：2019-12-23

Applicant: Denka Company Limited ,  JSP Corporation

Inventor： Kazuto Tabara ,  Hironori Nagasaki ,  Kohei Mizuta ,  Masanori Mitsumoto ,  Yoshinori Shimojo

IPC: C04B28/14 ,  E04B1/80 ,  E04B1/94

Abstract: Provided is a structure having both fire resistance and heat insulation properties and capable of retaining its shape without being collapsed or deformed even when exposed to a flame. The present invention provides a fire-resistant heat-insulation composition comprising 70 to 250 parts by mass of gypsum based on 100 parts by mass of calcium aluminate having a CaO content of 34% or more, and 0.1 to 20 parts by mass of a fibrous inorganic clay mineral having a crystallization water ratio of 5% or more, based on 100 parts by mass of the total of the calcium aluminate and the gypsum.

公开(公告)号：US11208537B2

公开(公告)日：2021-12-28

申请号：US16463755

申请日：2017-11-15

Applicant: JSP Corporation

Inventor： Tatsuya Hayashi ,  Nobumasa Koshita ,  Masaharu Oikawa

IPC: C08J9/232 ,  C08J9/20

Abstract: 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 (T1−T2) between a melting peak temperature (T1) and a melting peak temperature (T2) is from 0 to 8° C., wherein the melting peak temperature (T1) 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 (T2) 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.

公开(公告)号：US20210189089A1

公开(公告)日：2021-06-24

申请号：US17273232

申请日：2019-09-04

Applicant: JSP Corporation

Inventor： Tatsuya HAYASHI ,  Akinobu HIRA

IPC: C08J9/18

Abstract: 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/m3 and a closed cell ratio of 85% or more.

公开(公告)号：US10974435B2

公开(公告)日：2021-04-13

申请号：US15528993

申请日：2015-12-11

Applicant: JSP CORPORATION

Inventor： Masahiro Gomibuchi ,  Toshio Morita

IPC: B29C49/04 ,  B29C33/20 ,  B29C49/42 ,  B29C49/00 ,  B29C49/18 ,  B29C49/58 ,  B29C49/46 ,  B29C49/56 ,  B29K105/04

Abstract: A method for producing a foamed blow-molded article, which includes extruding a physical blowing agent-containing foamable molten resin downwardly through a annular die to form a tubular foamed parison, clamping the foamed parison between split molds, and then blow molding it. At the latest before completion of the clamping of the foamed parison between the split molds, a gas is blown toward an inner peripheral surface of an upper portion of the foamed parison, the bottom portion of which has been closed, from a gas ejection outlet located within the foamed parison at a position immediately below the annular die to widen the foamed parison.

公开(公告)号：US20210095091A1

公开(公告)日：2021-04-01

申请号：US16634637

申请日：2018-08-01

Applicant: JSP Corporation

Inventor： Tatsuya HAYASHI ,  Nobumasa KOSHITA ,  Masaharu OIKAWA

IPC: C08J9/16

Abstract: The present invention relates to expanded thermoplastic urethane-based elastomer beads including, as a base material, a thermoplastic urethane-based elastomer having a melting point Tm of 175° C. or higher and such a glass transition temperature Tg that a difference (Tm-Tg) between the melting point Tm and the glass transition temperature Tg is 200° C. or more.

公开(公告)号：US10893750B2

公开(公告)日：2021-01-19

申请号：US16062644

申请日：2016-12-20

Applicant: JSP CORPORATION

Inventor： Atsuo Takayama ,  Motoaki Ueguri ,  Keiichi Hashimoto

IPC: A47C7/18 ,  B60N2/90 ,  A47C27/14 ,  A47C7/24 ,  B60N2/68 ,  B29C39/10 ,  B60N2/70 ,  B29L31/58 ,  B60N2/58

Abstract: A method for producing a seat core material that has a foamed molded substrate and a frame member embedded in a periphery thereof, which includes, as step (a), heating thermoplastic resin expanded beads in a mold cavity, in which the frame member has been disposed, to fusion-bond the expanded beads to each other and to obtain the foamed molded substrate with the frame member being embedded in the periphery thereof; and, as step (b), simultaneously with step (a) or after step (a), forming a void cavity S, S′ in the foamed molded substrate at a position along and adjacent to the frame member. The void cavity S, S′ has a size and shape that allows a relative displacement between the frame member and the foamed molded substrate when the foamed molded substrate shrinks after step (b).

公开(公告)号：US10793694B2

公开(公告)日：2020-10-06

申请号：US15578608

申请日：2016-05-25

Applicant: JSP Corporation

Inventor： Nobumasa Koshita ,  Koki Nishijima ,  Masaharu Oikawa

IPC: C08J9/18 ,  C08J9/228 ,  B29C44/34 ,  C08J9/232 ,  B29C44/44 ,  C08L75/04 ,  B29K75/00 ,  B29K105/04 ,  B29K101/12

Abstract: Provided are expanded beads capable of providing an expanded thermoplastic polyurethane beads molded article which is excellent in physical properties, such as compression characteristics, repulsion elasticity, etc., and an expanded thermoplastic polyurethane beads molded article. Expanded beads of thermoplastic polyurethane, wherein a Shore A hardness of the thermoplastic polyurethane is 85 or more; an average cell diameter of the expanded beads is 50 to 300 μm; and a closed cell ratio when bisecting the expanded thermoplastic polyurethane bead is 60% or more; and an expanded thermoplastic polyurethane beads molded article obtained through in-mold molding of the same are disclosed.

公开(公告)号：US20200247094A1

公开(公告)日：2020-08-06

申请号：US16740609

申请日：2020-01-13

Applicant: JSP CORPORATION

Inventor： Ryuichi TANIGUCHI ,  Hirotoshi KAKUTA ,  Takashi ORI

IPC: B32B27/06 ,  B32B5/18 ,  B32B27/32 ,  B29C48/00 ,  B29C48/21 ,  B29C48/07

Abstract: A laminated foam sheet having a polyethylene resin foam layer and an antistatic polyethylene layer laminated on one or both sides thereof is produced by coextruding melts for respective layers, wherein the melt for the antistatic layer contains a polyethylene resin, an ionomer resin antistatic agent and a specific amount of volatile plasticizer blend containing an alcohol and a saturated hydrocarbon or a dialkyl ether. The antistatic layer of the obtained laminated foam sheet has specific morphology.

公开(公告)号：US10717370B2

公开(公告)日：2020-07-21

申请号：US16067645

申请日：2017-02-03

Applicant: JSP CORPORATION

Inventor： Katsunori Hisamatsu ,  Atsuo Takayama ,  Keiichi Hashimoto

IPC: B32B1/02 ,  B60N2/005 ,  B60N2/90 ,  B29C67/20 ,  B60N2/70 ,  B29C44/44 ,  C08J9/232 ,  B60N2/68 ,  A47C7/00 ,  A47C7/02 ,  A47C7/16 ,  A47C7/20 ,  A47C27/14 ,  B29L31/00 ,  B29K105/04

Abstract: There is provided a vehicle seat core member that is superior in terms of a dimensional accuracy as well as integrity of a thermoplastic resin expanded beads molded body and a frame member. A vehicle seat core member (100) is formed as an integrally molded article of a thermoplastic resin expanded beads molded body (10) and a frame member (20), the thermoplastic resin expanded beads molded body (10) is formed of thermoplastic resin expanded beads (30) having through holes (32), and a porosity of the thermoplastic resin expanded beads molded body (10) is 10 vol % or more and 40 vol % or less.

公开(公告)号：US20200207897A1

公开(公告)日：2020-07-02

申请号：US16631415

申请日：2018-07-20

Applicant: JSP Corporation

Inventor： Kenji HARAGUCHI ,  Jumpei GOTO

IPC: C08F257/02

Abstract: The present invention relates to a styrene-based resin having a weight average molecular weight Mw′ as determined by the GPC-MALS method of 1,000,000 or more and 5,000,000 or less, a degree of long-chain branching of 0.2 or more per 1,000 styrene units, and a tetrahydrofuran-insoluble matter of 0.1% by weight or less (including 0), the styrene-based resin being free from a component derived from a polyfunctional monomer in a molecular chain thereof. In a method for producing this styrene-based resin, in an impregnation step of adding a polymerization initiator and a styrene monomer in an aqueous medium, thereby impregnating the polymerization initiator and the styrene monomer in the seed particle at a temperature at which polymerization of the styrene monomer does not substantially proceed, the amount of the styrene monomer is 20 to 200 parts by weight based on 100 parts by weight of the seed particle; and in an additional impregnation polymerization step of graft polymerizing the styrene monomer on the styrene-based resin, the addition amount of the styrene monomer is 50 to 700 parts by weight based on 100 parts by weight of the seed particle, and the content of the styrene monomer in the seed particle is held at 10% by weight or less.