公开(公告)号：US10913862B2

公开(公告)日：2021-02-09

申请号：US16479954

申请日：2018-01-23

Applicant: Sharp Kabushiki Kaisha

Inventor： Yasuhiro Shibai ,  Ken Atsumo ,  Kenichiro Nakamatsu

IPC: C09D5/16 ,  C08F232/06 ,  B32B3/30 ,  B32B27/30 ,  C08F16/04 ,  C08F220/56 ,  C08F290/00 ,  C09D5/18 ,  G02B1/18

Abstract: The present invention provides an antifouling film that is excellent in antifouling properties, rubbing resistance, and adhesion. The antifouling film includes: a substrate; and a polymer layer disposed on a surface of the substrate and including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light, the polymer layer being a cured product of a polymerizable composition, the polymerizable composition containing, in terms of active components, 30 to 80 wt % of a polyfunctional acrylate, 10 to 30 wt % of a monofunctional amide monomer, 0.5 to 10 wt % of a fluorine-based release agent, and 5 to 30 wt % of a vinyl-based polymer containing a repeat unit represented by a predetermined formula.

公开(公告)号：US10800868B2

公开(公告)日：2020-10-13

申请号：US16690185

申请日：2019-11-21

Applicant: Sharp Kabushiki Kaisha

Inventor： Yasuhiro Shibai ,  Tokio Taguchi ,  Kenichiro Nakamatsu

IPC: C08F222/20 ,  G02B1/18

Abstract: An antifouling film includes: a substrate; and a polymer layer disposed on a surface of the substrate and including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light. The polymer layer is a cured product of a polymerizable composition. The polymerizable composition contains, in terms of active components, 75 to 95 wt % of a polymerizable monomer, 2.5 to 12.5 wt % of a urethane acrylate containing fluorine and an ester, and 2.5 to 9 wt % of a perfluoroalkyl-based monomer containing one (meth)acryloyl group for each molecule. The polymerizable monomer contains a bifunctional acrylate that contains an ethylene oxide group and a multifunctional acrylate that contains no ethylene oxide group. The perfluoroalkyl-based monomer has a fluorine atom concentration of 50 to 60 wt %. The polymerizable composition has an ethylene oxide group concentration of 20 to 50 wt %.

公开(公告)号：US10414108B2

公开(公告)日：2019-09-17

申请号：US15118536

申请日：2016-02-10

Applicant: Sharp Kabushiki Kaisha

Inventor： Hidekazu Hayashi ,  Tokio Taguchi ,  Nobuaki Yamada ,  Yasuhiro Shibai ,  Atsushi Niinoh ,  Kenichiro Nakamatsu

IPC: B29D11/00 ,  B32B3/30 ,  G02B1/118 ,  G02B1/18 ,  G02B1/14 ,  B29C33/62 ,  C09D5/00 ,  C09D5/16 ,  C09D133/08 ,  C09D133/24 ,  C09D175/16 ,  B29C59/02 ,  C08F290/06 ,  C08L75/16 ,  B32B27/08 ,  B32B27/30 ,  B32B37/15 ,  B29C35/08 ,  B29K33/04 ,  B29K105/00 ,  B32B38/06

Abstract: A method for producing an optical film includes: (1) applying a lower layer resin and an upper layer resin; (2) forming a resin layer having the uneven structure on a surface thereof by pressing a mold against the lower layer resin and the upper layer resin from the upper layer resin side in the state where the applied lower layer resin and upper layer resin are stacked; and (3) curing the resin layer, the lower layer resin containing at least one kind of first monomer that contains no fluorine atoms, the upper layer resin containing a fluorine-containing monomer and at least one kind of second monomer that contains no fluorine atoms, at least one of the first monomer and the second monomer containing a compatible monomer that is compatible with the fluorine-containing monomer and being dissolved in the lower layer resin and the upper layer resin.

公开(公告)号：US12070188B2

公开(公告)日：2024-08-27

申请号：US17283188

申请日：2019-10-01

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Miho Yamada ,  Kiyoshi Minoura ,  Tokio Taguchi ,  Yasuhiro Shibai

IPC: A61B1/00

CPC classification number: A61B1/00137

Abstract: An endoscope distal end cover (10) is a cover for protecting a distal end (20t) of an endoscope (20) which has an observation window at the distal end, including: a synthetic polymer film (13) which is to be located over the observation window (32) when the endoscope distal end cover is attached to the distal end of the endoscope, wherein the synthetic polymer film has a surface which includes a plurality of raised portions, when viewed in a normal direction of the synthetic polymer film, a two-dimensional size of the plurality of raised portions is in the range of more than 20 nm and less than 500 nm, and a static contact angle of water with respect to the surface is not less than 98°.

公开(公告)号：US11707911B2

公开(公告)日：2023-07-25

申请号：US17569623

申请日：2022-01-06

Applicant: Sharp Kabushiki Kaisha

Inventor： Hidekazu Hayashi ,  Tokio Taguchi ,  Atsushi Niinoh ,  Kenichiro Nakamatsu ,  Yasuhiro Shibai

IPC: B32B3/30 ,  G02B1/118 ,  G02B1/18 ,  B29C59/02 ,  C09D5/16 ,  C08F290/06 ,  C08L75/16 ,  B32B27/08 ,  G02B1/14 ,  B29C33/62 ,  B29D11/00 ,  C09D5/00 ,  C09D133/08 ,  C09D133/24 ,  C09D175/16 ,  B32B27/30 ,  B32B37/15 ,  B32B38/06 ,  B29C35/08 ,  B29K33/04 ,  B29K105/00

CPC classification number: B32B3/30 ,  B29C33/62 ,  B29C59/026 ,  B29D11/00788 ,  B29D11/00865 ,  B32B27/08 ,  B32B27/30 ,  B32B37/15 ,  C08F290/067 ,  C08L75/16 ,  C09D5/006 ,  C09D5/1662 ,  C09D5/1681 ,  C09D5/1693 ,  C09D133/08 ,  C09D133/24 ,  C09D175/16 ,  G02B1/118 ,  G02B1/14 ,  G02B1/18 ,  B29C35/0805 ,  B29C2035/0827 ,  B29C2059/023 ,  B29D11/0073 ,  B29K2033/04 ,  B29K2105/0002 ,  B29K2105/0005 ,  B29K2995/0087 ,  B29K2995/0097 ,  B32B38/06 ,  B32B2551/00 ,  C08F290/067 ,  C08F220/58 ,  C08F290/067 ,  C08F222/1006

Abstract: The present invention provides a method for producing an optical film excellent in anti-fouling properties and scratch resistance as well as anti-reflection properties. The method includes the steps of: (1) applying a lower layer resin and an upper layer resin; (2) forming a resin layer having the uneven structure on a surface thereof by pressing a mold against the lower layer resin and the upper layer resin from the upper layer resin side in the state where the applied lower layer resin and upper layer resin are stacked; and (3) curing the resin layer, the lower layer resin containing at least one kind of first monomer that contains no fluorine atoms, the upper layer resin containing a fluorine-containing monomer and at least one kind of second monomer that contains no fluorine atoms, at least one of the first monomer and the second monomer containing a compatible monomer that is compatible with the fluorine-containing monomer and being dissolved in the lower layer resin and the upper layer resin.

公开(公告)号：US11142653B2

公开(公告)日：2021-10-12

申请号：US16317161

申请日：2017-07-03

Applicant: Sharp Kabushiki Kaisha ,  DAIKIN INDUSTRIES, LTD.

Inventor： Hidekazu Hayashi ,  Tokio Taguchi ,  Kenichiro Nakamatsu ,  Yasuhiro Shibai ,  Ken Atsumo ,  Tsuneo Yamashita ,  Saya Nii ,  Eiji Sakamoto ,  Kakeru Hanabusa ,  Hisashi Mitsuhashi ,  Takayuki Araki

IPC: C09D5/00 ,  G02B1/18 ,  C08G18/67 ,  B32B27/16 ,  C08G18/79 ,  B32B27/18 ,  B32B27/30 ,  B32B38/06 ,  B29C59/02 ,  B29C59/04 ,  B29C37/00 ,  C08G18/48 ,  C08G18/72 ,  C09D175/14 ,  G03F7/00 ,  B29C35/08

Abstract: The present invention provides a method for producing an antifouling film having excellent antifouling properties and rubbing resistance. The method for producing an antifouling film of the present invention includes Process (1) of applying a resin to a surface of a substrate; Process (2) of pushing the substrate to a die with the resin in between to form an uneven structure on a surface of the resin; and Process (3) of curing the resin including the uneven structure on the surface thereof to form a polymer layer. The resin contains an antifouling agent that contains a compound containing a perfluoro(poly)ether group. The die includes a surface having undergone release treatment using a release agent containing a compound that contains a perfluoro(poly)ether group, a hydrolyzable group, and a Si atom.

公开(公告)号：US10926510B2

公开(公告)日：2021-02-23

申请号：US16475420

申请日：2018-01-11

Applicant: Sharp Kabushiki Kaisha

Inventor： Yasuhiro Shibai ,  Ken Atsumo ,  Kenichiro Nakamatsu

IPC: B32B3/30 ,  B32B27/30 ,  G02B1/118 ,  G02B1/18

Abstract: The present invention provides an antifouling film that is excellent in antifouling properties, adhesion, rubbing resistance, and reliability, and reduces fingerprint emergence at high humidity. The antifouling film includes a substrate; and a polymer layer disposed on a surface of the substrate and including on a surface thereof an uneven structure provided with projections at a pitch not longer than a wavelength of visible light, the polymer layer being a cured product of a polymerizable composition, the polymerizable composition containing, in terms of active components, 20 to 90 wt % of a polyfunctional acrylate containing an ethylene oxide group, 5 to 25 wt % of a monofunctional amide monomer, and 0.5 to 10 wt % of a fluorine-based release agent, the polymerizable composition containing, in terms of active components, a total of 40 to 65 wt % of the ethylene oxide group in the polyfunctional acrylate and the monofunctional amide monomer.

公开(公告)号：US10471692B2

公开(公告)日：2019-11-12

申请号：US15743373

申请日：2016-08-01

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Yasuhiro Shibai ,  Ken Atsumo ,  Hidekazu Hayashi ,  Nobuaki Yamada

IPC: B32B3/30 ,  B32B27/30 ,  B32B23/08 ,  G02B1/118 ,  G02B1/111

Abstract: The present invention provides an optical member with which degradation of adhesion between a substrate containing triacetylcellulose and a polymer layer caused by moisture absorption is suppressed. An optical member according to the present invention includes a substrate and a polymer layer in direct contact with the substrate and having an indented structure on a surface thereof, the indented structure including multiple protrusions formed at a pitch not greater than a wavelength of visible light. Triacetylcellulose is present in at least a surface of the substrate on the polymer layer side, the polymer layer is formed from a polymerizable composition polymerizable by active energy ray irradiation, and the polymerizable composition contains 30 parts by weight or more and 75 parts by weight or less of a polyfunctional acrylate, 25 parts by weight or more and 60 parts by weight or less of a monofunctional monomer having a tertiary amide group, and 0.1 parts by weight or more and 10 parts by weight or less of a fluorine-containing compound having a reactive group.