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公开(公告)号：US11565480B2
公开(公告)日：2023-01-31
申请号：US17282847
申请日：2019-10-10
Applicant: DIC Corporation
Inventor： Kenji Nakamura , Tomomichi Kanda , Hideaki Kikuchi
Abstract: There is provided a method for producing a metal-resin composite which includes a resin member and a metal member having a roughened surface in at least a portion of the surface thereof, the resin member being joined so as to be in contact with at least a portion of the roughened surface. The method includes a step of joining the resin member and the metal member by melting the resin member with the frictional heat generated in the surface of the metal member on its side opposite to the resin member in a state where the metal member and the resin member are superposed. The method includes making adjustment so that when the roughened surface is measured at arbitrary five points by using a confocal microscope according to ISO 25178, the developed area ratio (Sdr) is 5 or more in terms of number-average value.
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公开(公告)号：US20220259460A1
公开(公告)日：2022-08-18
申请号：US17601502
申请日：2021-02-15
Applicant: DIC Corporation
Inventor： Kenji Nakamura , Atsumi Sano , Tomoo Okubo , Masahiro Niwa
Abstract: A two-component curing adhesive using a curing reaction between a polyisocyanate composition (X) and a polyol composition (Y), wherein the polyisocyanate composition (X) includes a polyisocyanate (A), the polyol composition (Y) includes a polyol (B), and the polyisocyanate composition. (X) and the polyol composition (Y) each have a Trouton ratio within a range of 4.0 to 8.0.
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公开(公告)号：US11999112B2
公开(公告)日：2024-06-04
申请号：US17046515
申请日：2019-04-04
Applicant: DIC Corporation
Inventor： Kenji Nakamura , Kenta Hiwatashi , Hideaki Kikuchi
IPC: B29C65/00 , B29C45/14 , B29C65/40 , B29C65/70 , B29K81/00 , B29K705/00 , B32B15/082 , B32B27/20 , C08L81/02
CPC classification number: B29C66/72321 , B29C45/14 , B29C65/405 , B29C65/70 , B32B15/082 , B32B27/20 , C08L81/02 , B29C2045/14868 , B29K2081/04 , B29K2705/00 , B32B2307/538
Abstract: Provided are a composite structure that is formed by joining a metal member and a molded article of a polyarylene sulfide resin composition and is more excellent in terms of joint strength and heat cycle resistance and a producing method therefor. More specifically, provided are a composite structure formed by joining a surface-roughened metal member and a PPS member, in which a number average value of developed area ratios (Sdr) of an interface measured at five random points on a surface of the surface-roughened metal member using a confocal microscope based on ISO 25178 is 5 [%] or more, and a melt viscosity of a PPS resin is 15 to 500 [Pa·s], and a producing method therefor.
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公开(公告)号：US20220259472A1
公开(公告)日：2022-08-18
申请号：US17601513
申请日：2021-02-15
Applicant: DIC Corporation
Inventor： Kenji Nakamura , Atsumi Sano , Tomoo Okubo , Masahiro Niwa
Abstract: A two-component curing adhesive using a curing reaction between a polyisocyanate composition (X) and a polyol composition (Y), wherein the polyisocyanate composition (X) includes a polyisocyanate (A), the polyol composition (Y) includes a polyol (B), and the polyisocyanate composition. (X) and the polyol composition (Y) each have an elongational viscosity of 0.1 to 10 Pa·s.
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公开(公告)号：US20230040667A1
公开(公告)日：2023-02-09
申请号：US17788367
申请日：2020-12-11
Applicant: DIC Corporation
Inventor： Kenji Nakamura , Tomomichi Kanda
IPC: C08G75/0259 , C08G75/0281 , C08K5/54 , B32B15/08 , B32B15/20
Abstract: The invention is directed to a composite structure in which a metal member having a roughened surface and a resin member are joined in a state in which at least a portion of the roughened surface is included. The resin member is made of a molded article obtained by melt-molding a polyarylene sulfide resin composition containing a polyarylene sulfide resin. In the roughened surface, a cumulative pore volume of a pore diameter in a range of 0.1 μm to 20 μm is in a range of 0.5 nL/mm2 or more and 5 nL/mm2 or less measured by mercury porosimetry. According to the invention, it is possible to provide a composite structure that is obtained by joining a metal member and a molded article made of polyarylene sulfide resin composition and is more excellent in joining strength, heat cycle resistance, and sealing properties, and a method for producing the composite structure.
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Patent Agency Ranking
公开(公告)号：US11326103B2
公开(公告)日：2022-05-10
申请号：US16468388
申请日：2017-12-12
Applicant: DIC Corporation
Inventor： Hiroshi Hasebe , Toru Fujisawa , Yoshinori Iwashita , Fumiaki Kodera , Keisuke Fujisawa , Kenji Nakamura , Yuichi Satokawa
IPC: G02F1/1334 , C09K19/54 , C09K19/30 , C09K19/34 , C09K19/04
Abstract: To provide a liquid crystal display device that has a high off-response speed and a good balance between drive voltage and transmittance, is stable over time, and also has a high voltage holding ratio. A liquid crystal display device in which a liquid crystal layer containing a polymer network (A) and a liquid crystal composition (B) is disposed between two substrates having an electrode on at least one side thereof and having transparent properties on at least one side thereof, and the loss factor (tan δ) (loss modulus/storage modulus) of the liquid crystal layer calculated from the storage modulus (Pa) and the loss modulus (Pa) in a sinusoidal vibration measured with a rheometer at 25° C. and at a measurement frequency of 1 Hz ranges from 0.1 to 1.
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公开(公告)号：US20210347127A1
公开(公告)日：2021-11-11
申请号：US17282847
申请日：2019-10-10
Applicant: DIC Corporation
Inventor： Kenji Nakamura , Tomomichi Kanda , Hideaki Kikuchi
Abstract: There is provided a method for producing a metal-resin composite which includes a resin member and a metal member having a roughened surface in at least a portion of the surface thereof, the resin member being joined so as to be in contact with at least a portion of the roughened surface. The method includes a step of joining the resin member and the metal member by melting the resin member with the frictional heat generated in the surface of the metal member on its side opposite to the resin member in a state where the metal member and the resin member are superposed. The method includes making adjustment so that when the roughened surface is measured at arbitrary five points by using a confocal microscope according to ISO 25178, the developed area ratio (Sdr) is 5 or more in terms of number-average value.
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公开(公告)号：US20240052211A1
公开(公告)日：2024-02-15
申请号：US18448356
申请日：2023-08-11
Applicant: DIC Corporation
Inventor： Katsuaki Imai , Kenji Nakamura
IPC: C09J7/38 , C09J133/08 , C08F220/18
CPC classification number: C09J7/385 , C09J133/08 , C08F220/1804 , C09J2301/10 , C09J2433/00
Abstract: A patterned pressure-sensitive adhesive tape includes a pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer is formed by a pressure-sensitive adhesive composition for patterned pressure-sensitive adhesive tape. An elongational viscosity of the pressure-sensitive adhesive composition measured at 30° C. is 1,000 mPa·s or greater and 650,000 mPa·s or less, or a Trouton's ratio thereof measured at 30° C. is 8 or greater and 400 or less. The pressure-sensitive adhesive layer has two or more pressure-sensitive adhesive portions (B) and a non-pressure-sensitive adhesive portion region having no pressure-sensitive adhesive portions (B) between the two or more pressure-sensitive adhesive portions (B). The non-pressure-sensitive adhesive portion region is patterned to lead to an outer periphery of a sheet plane.
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公开(公告)号：US20210347130A1
公开(公告)日：2021-11-11
申请号：US17282861
申请日：2019-10-10
Applicant: DIC Corporation
Inventor： Tomomichi Kanda , Kenji Nakamura
Abstract: There is provided a method for producing a metal-resin composite including a metal member and a resin member which are joined together, the resin member containing at least a thermoplastic resin. The method includes a step of joining together the resin member and the metal member by melting the resin member with the frictional heat generated in the surface of the metal member on its side opposite to the resin member in a state where the metal member and the resin member are superposed. The melting point of the thermoplastic resin is 260° C. or more.
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公开(公告)号：US20210162680A1
公开(公告)日：2021-06-03
申请号：US17046515
申请日：2019-04-04
Applicant: DIC Corporation
Inventor： Kenji Nakamura , Kenta Hiwatashi , Hideaki Kikuchi
Abstract: Provided are a composite structure that is formed by joining a metal member and a molded article of a polyarylene sulfide resin composition and is more excellent in terms of joint strength and heat cycle resistance and a producing method therefor. More specifically, provided are a composite structure formed by joining a surface-roughened metal member and a PPS member, in which a number average value of developed area ratios (Sdr) of an interface measured at five random points on a surface of the surface-roughened metal member using a confocal microscope based on ISO 25178 is 5 [%] or more, and a melt viscosity of a PPS resin is 15 to 500 [Pa·s], and a producing method therefor.
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