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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
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.
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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.
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公开(公告)号：US11236218B2
公开(公告)日：2022-02-01
申请号：US16078554
申请日：2017-02-24
Applicant: ZEON CORPORATION
Inventor： Naohiro Igari , Misa Yamamoto , Masaru Kitagawa , Shinji Kato
IPC: C08L13/02 , C08K3/10 , C08K5/053 , A41D19/04 , C08K5/098 , C08K3/24 , C08F2/22 , C08F236/12 , C08F220/32
Abstract: A latex composition has a latex of a carboxyl group-containing conjugated diene rubber and a metal compound including a trivalent or higher metal, wherein a content of the metal compound is 0.1 to 1.5 parts by weight, based on 100 parts by weight of the carboxyl group-containing conjugated diene rubber.
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Patent Agency Ranking
公开(公告)号：US10526459B2
公开(公告)日：2020-01-07
申请号：US15119873
申请日：2015-03-24
Applicant: ZEON CORPORATION
Inventor： Shinji Kato
Abstract: A dip-formed article obtained by dip forming a dip-forming composition containing a latex of a carboxyl group-containing nitrile rubber, wherein at least one surface is surface treated, a thickness is 0.02 to 0.2 mm, a coefficient of dynamic friction of the surface treated surface is 0.5 or less, and a tensile strength after surface treatment is 30 MPa or more is provided.
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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
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.
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公开(公告)号：US10280291B2
公开(公告)日：2019-05-07
申请号：US15533146
申请日：2015-11-30
Applicant: ZEON CORPORATION
Inventor： Shinji Kato
IPC: B29C41/14 , C08F236/12 , C08K3/06 , C08L13/02 , C08L9/04
Abstract: A latex for dip forming and a sulfur-based crosslinking agent, and has a pH of 9.5-11, the latex containing a copolymer having 40-80% by weight of conjugated diene monomer units (A) that contain a butadiene unit and an isoprene unit, 10-45% by weight of ethylenically unsaturated nitrile monomer units (B), and 2-15% by weight of ethylenically unsaturated acid monomer units (C), the ratio between the butadiene unit content and the isoprene unit content being 40:60 to 95:5 expressed in terms of weight.
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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
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.
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公开(公告)号：US10907002B2
公开(公告)日：2021-02-02
申请号：US16083704
申请日：2017-03-24
Applicant: ZEON CORPORATION
Inventor： Naohiro Igari , Shinji Kato
IPC: C08F236/12 , B29C41/00 , B29C41/14 , B29C41/20 , C08F220/04 , B32B27/30 , B32B27/00 , C08F220/42 , B32B27/12 , C08F236/04 , B29K105/00 , B29L31/48
Abstract: A copolymer latex of a copolymer comprising 50 to 88 wt % of a conjugated diene monomer unit, 10 to 40 wt % of an ethylenically unsaturated nitrile monomer unit, and 2 to 10 wt % of an ethylenically unsaturated acid monomer unit, the copolymer latex having an insoluble content in methyl ethyl ketone of 70 wt % or less and a swelling degree in methyl ethyl ketone of 40 times or more when the copolymer is formed into a dry film.
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