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1.发明授权公开(公告)号：US11908601B2
公开(公告)日：2024-02-20
申请号：US17228896
申请日：2021-04-13
Applicant: SOMAR CORPORATION
Inventor： Hirohisa Ishizaki , Akira Ochiai
Abstract: There is provided a magnetic responsiveness composite material capable of increasing viscosity by applying a magnetic field when compounded together with a liquid in a composition. The magnetic responsive composite material comprises first particles as core particles composed of a nonmagnetic inorganic material and second particles composed of a magnetic material adhering to at least a part of surfaces of the first particles. A lipophilic treatment agent is applied to at least a part of surfaces of the second particles. The second particles satisfy a relationship of having a smaller average particle diameter than that of the first particles. A lipophilic treatment agent is preferably at least one kind selected from coupling agents and surfactants.
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2.发明申请公开(公告)号：US20210327622A1
公开(公告)日：2021-10-21
申请号：US17228896
申请日：2021-04-13
Applicant: SOMAR CORPORATION
Inventor： Hirohisa Ishizaki , Akira Ochiai
Abstract: There is provided a magnetic responsiveness composite material capable of increasing viscosity by applying a magnetic field when compounded together with a liquid in a composition. The magnetic responsive composite material comprises first particles as core particles composed of a nonmagnetic inorganic material and second particles composed of a magnetic material adhering to at least a part of surfaces of the first particles. A lipophilic treatment agent is applied to at least a part of surfaces of the second particles. The second particles satisfy a relationship of having a smaller average particle diameter than that of the first particles. A lipophilic treatment agent is preferably at least one kind selected from coupling agents and surfactants.
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Patent Agency Ranking
公开(公告)号：US11004582B2
公开(公告)日：2021-05-11
申请号：US14905292
申请日：2014-07-17
Applicant: Somar Corporation
Inventor： Hirohisa Ishizaki , Akira Ochiai
Abstract: A magnetic powder is obtained by removing a dispersion medium from a magnetic fluid that includes magnetic particles, a dispersant and the dispersion medium. A magnetic powder composition includes the magnetic powder and a resin material, and a magnetic powder composition molded body is obtained therefrom. A method of producing a magnetic powder includes removing a dispersion medium from a magnetic fluid containing magnetic particles, a dispersant and the dispersion medium, and powdering a solid component obtained by removing the dispersion medium. A method of producing a magnetic powder composition and a method of producing a magnetic powder composition molded product are also provided.
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公开(公告)号：US11578183B2
公开(公告)日：2023-02-14
申请号：US16463401
申请日：2017-11-27
Applicant: SOMAR CORPORATION
Inventor： Hirohisa Ishizaki , Akira Ochiai
IPC: C08K3/22 , B29C35/02 , C08J3/09 , C08K9/04 , C08L101/00 , C08K5/00 , C08K3/00 , C08F2/46 , C08L15/00 , C08L63/00 , C08L67/04 , C08L75/04 , C08L83/04 , C08L63/08 , C07C255/54
Abstract: A resin composition including: a magnetic fluid that includes magnetic particles, a dispersant, and a dispersion medium; and a resin or precursor thereof that includes, in a molecule thereof, at least one partial structure selected from the group consisting of a diene skeleton, a silicone skeleton, a urethane skeleton, a 4- to 7-membered ring lactone skeleton, an alkyl group having from 6 to 30 carbon atoms and an alkylene group having from 6 to 30 carbon atoms, a production method thereof, a resin composition molded body obtained by using the resin composition, and a production method thereof.
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公开(公告)号：US10663065B2
公开(公告)日：2020-05-26
申请号：US15538882
申请日：2015-12-22
Applicant: SOMAR CORPORATION
Inventor： Hirohisa Ishizaki , Akira Ochiai
Abstract: An embodiment of the present invention provides a sealing member including a magnetic powder and at least one selected from the group consisting of a rubber material and a resin material, the magnetic powder being obtained by removing a dispersion medium from a magnetic fluid including magnetic particles, a dispersant and dispersion medium.
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公开(公告)号：US11407159B2
公开(公告)日：2022-08-09
申请号：US15568403
申请日：2016-04-18
Applicant: SOMAR CORPORATION
Inventor： Hirohisa Ishizaki , Akira Ochiai
IPC: B29C45/78 , C08K3/36 , C08K3/013 , B29C45/72 , C08K3/40 , B29C45/00 , B29C45/18 , B29K101/10 , C08K3/22 , C08K3/26
Abstract: The present invention is a method that enables continuous injection molding of a thermosetting resin composition and reuse of an unnecessary part produced during the molding. The method includes injecting a thermosetting resin composition into a mold while a curing reaction of the resin composition is incomplete. The thermosetting resin composition is then cooled in the mold until becoming semi-cured and removed as a semi-cured product from the mold. The semi-cured product is separated from the unnecessary part and separately heated to progress a thermosetting reaction of the thermosetting resin composition. The unnecessary part may be used as a reworked raw material by regrinding the unnecessary part and mixing it with a fresh thermosetting resin composition. Then, a resultant mixture is used to perform a new injection molding.
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公开(公告)号：US20200312504A1
公开(公告)日：2020-10-01
申请号：US16825345
申请日：2020-03-20
Applicant: SOMAR CORPORATION
Inventor： Hirohisa Ishizaki , Akira Ochiai
IPC: H01F1/44
Abstract: A magnetorheological fluid composition with excellent dispersion stability of magnetic particles and fluidity is provided. The magnetorheological fluid composition comprises magnetic particles, a dispersion medium, a viscosity modifier and hollow particles. The hollow particles preferably have an average primary particle diameter of 5 to 500 nm. The hollow particles are preferably at least one kind selected from a group consisting of carbon particles, silica and crosslinked styrene-acryl. The viscosity modifier is preferably at least one kind selected from a group consisting of castor oil, fatty acid amides, polyolefins and (meth)acrylate esters.
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