公开(公告)号：US11525046B2

公开(公告)日：2022-12-13

申请号：US16769660

申请日：2018-12-10

Applicant: ZEON CORPORATION

Inventor： Tomoya Taniyama ,  Takashi Iga

IPC: C08J9/30

Abstract: A foam containing a nitrile group-containing conjugated diene copolymer and a urethane polymer, wherein relative to 100 wt % of the sum of the nitrile group-containing conjugated diene copolymer and the urethane polymer, the nitrile group-containing conjugated diene copolymer is present in an amount of less than 90 wt % and the urethane polymer is present in an amount of more than 10 wt %, the nitrile group-containing conjugated diene copolymer contains ethylenically unsaturated nitrile monomer units in an amount of more than 31 wt %, the foam has a density of 0.08 to 0.30 g/cm3, and in observation of an arbitrary cross section of the foam, air bubble cross sections present in the cross section have an average diameter of 350 μm or less, and the number of air bubble cross sections with a diameter of 0.6 mm or more present in the cross section is 0.062 per mm2 or less.

公开(公告)号：US11325356B2

公开(公告)日：2022-05-10

申请号：US16337104

申请日：2017-09-19

Applicant: ZEON CORPORATION

Inventor： Kentaro Hayasaka ,  Tomoya Taniyama ,  Shinji Kato

IPC: B32B25/10 ,  A41D19/00 ,  C08K3/24 ,  C08K5/09 ,  C08L9/04 ,  B05D5/00 ,  C08K3/28 ,  B05D1/36

Abstract: A method of producing a laminated body, the method including a coagulant solution deposition step of depositing a coagulant solution on a fiber substrate, and a coagulation step of forming a polymer layer on the fiber substrate by bringing a polymer latex into contact with the fiber substrate having the coagulant solution deposited thereon to cause a polymer to coagulate. As the coagulant solution, a solution obtained by dissolving or dispersing 0.2 to 7.0% by weight of a metal salt as a coagulant and 0.1 to 7.0% by weight of an organic acid in a solvent is used. In the method of producing a laminated body, the metal salt is a polyvalent metal salt. In the method of producing a laminated body, the organic acid is an organic acid having at least one group selected from a carboxyl group, a sulfo group, a hydroxy group, and a thiol group.

公开(公告)号：US11891492B2

公开(公告)日：2024-02-06

申请号：US16628128

申请日：2018-07-10

Applicant: ZEON CORPORATION

Inventor： Tomoya Taniyama ,  Hidekazu Haneda

IPC: C08J9/30 ,  C08J9/228

CPC classification number: C08J9/228 ,  C08J9/30 ,  C08J2309/04

Abstract: A method for manufacturing a foam rubber by foaming a polymer latex is provided, wherein the polymer latex used has a solids content of 60.0 wt % or more, comprises 0.001 to 1.0 part by weight of antifoaming agent relative to 100 parts by weight of polymer in the polymer latex, and has a viscosity at 25° C. of 370 cps or less when the solids content is controlled to 66.0 wt %.

公开(公告)号：US11305518B2

公开(公告)日：2022-04-19

申请号：US16476795

申请日：2018-01-12

Applicant: ZEON CORPORATION

Inventor： Tomoya Taniyama ,  Kentaro Hayasaka ,  Shinji Kato

IPC: B32B25/10 ,  B32B5/02 ,  B32B25/14 ,  B32B37/24 ,  A41D19/00

Abstract: A laminated body formed by laminating a fiber substrate composed of a plurality of fibers and a polymer layer formed from a polymer latex. The polymer layer covers the fiber substrate in a state in which a portion of the polymer layer has permeated among the fibers. A ratio (t1/d) of a thickness t1 of the portion of the polymer layer that has permeated among the fibers (from a top surface of the fiber substrate) to a substrate layer average thickness d is 0.1 to 0.95. A thickness t2 of the portion of the polymer layer covering the top surface of the fiber substrate (from the top surface of the fiber substrate) is 80 μm or more.

公开(公告)号：US11926724B2

公开(公告)日：2024-03-12

申请号：US16628123

申请日：2018-07-10

Applicant: ZEON CORPORATION

Inventor： Tomoya Taniyama ,  Hidekazu Haneda

IPC: C08J9/30

CPC classification number: C08J9/30 ,  C08J2309/04

Abstract: A method for manufacturing a foam rubber by foaming a polymer latex is provided, wherein the polymer latex used has a solids content of 60.0 wt % or more, has a volume particle size distribution where the volume cumulative particle size d10 is more than 140 nm, and comprises 0.001 to 1.0 part by weight of antifoaming agent relative to 100 parts by weight of polymer in the polymer latex.

公开(公告)号：US11234469B2

公开(公告)日：2022-02-01

申请号：US15738040

申请日：2016-06-30

Applicant: ZEON CORPORATION

Inventor： Naohiro Igari ,  Shinji Kato ,  Tetsuya Akabane ,  Tomoya Taniyama

IPC: A41D19/00 ,  B29C41/14 ,  B29C41/20 ,  B29K105/08 ,  B29L31/48 ,  B29D99/00

Abstract: A dip-formed article includes a laminate in which a rubber layer is laminated on a fiber base material. The thickness of the rubber layer is 0.2 to 0.8 mm, the rubber constituting the rubber layer penetrates into the fiber base material, the maximum depth to which the rubber has penetrated into the fiber base material is 0.1 to 0.3 mm, and the maximum stress at 50% elongation of the laminate is 20 N or smaller.

公开(公告)号：US10661536B2

公开(公告)日：2020-05-26

申请号：US15740177

申请日：2016-07-01

Applicant: ZEON CORPORATION

Inventor： Shinji Kato ,  Naohiro Igari ,  Tetsuya Akabane ,  Tomoya Taniyama

IPC: B32B25/16 ,  B32B25/10 ,  C08F236/12 ,  A41D19/00 ,  D06M15/263 ,  D06M15/693 ,  D06M15/227 ,  D06M15/31 ,  B32B5/14

Abstract: A rubber formed article includes a laminate in which a rubber layer of nitrile rubber is laminated on a fiber base material. The nitrile rubber contains a copolymer having 52 to 78% by weight of conjugated diene monomer units, 20 to 40% by weight of α,β-ethylenically unsaturated nitrile monomer units, and 2 to 10% by weight of ethylenically unsaturated monocarboxylic acid monomer units. Stress at 50% elongation of the laminate is 20 N or smaller. A ratio of an area where rubber is visible when the laminate is viewed from the back side to an area of the laminate is 15% or less. The thickness of the rubber layer is 0.30 mm or less.