Sharp Kabushiki Kaisha Corporation

Daikin Industries, Ltd.

Nippon Paint Compnay, Ltd.

Yasuhiro Shibai

Katsuru Matsumoto

Ken Atsumo

Tokio Taguchi

Kenichiro Nakamatsu

Satoru Ariyoshi

Hidekazu Hayashi

Keiichi Kikawa

Miho Yamada

Kiyoshi Minoura

Nobuaki Yamada

Yoritaka Tsubaki

Takayuki Araki

Shinichi Ishikura

Keizou Ishii

Kiyoshi Toizumi

Koichi Saito

Tsuneo Yamashita

Nobuhiro Maezawa

Eiji Sakamoto

Saya Nii

Atsushi Niinoh

Katsumi Mizuguchi

Tsuyoshi Imamura

Tadashi Nakamura

Hisashi Mitsuhashi

Hiroshi Onda

Kakeru Hanabusa

Shinichi Nakano

Hidetsugu Kawai

Tomoya Tsutsumino

The film according to an embodiment of the present inventionincludes a synthetic polymer membraneincluding a surface having a plurality of protrusions, and photocatalyst particlessupported on the surface of the synthetic polymer membrane. As the synthetic polymer membraneis seen from a normal line direction, the two-dimensional size of the plurality of protrusionsis more than 20 nm to less than 500 nm. The mean particle diameter of the photocatalyst particlesis preferably 20 nm or more to 1000 nm or less.

Film

An endoscope distal end cover () is a cover for protecting a distal end () of an endoscope () which has an observation window at the distal end, including: a synthetic polymer film () which is to be located over the observation window () 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 150°, and a static contact angle of hexadecane with respect to the surface is not less than 60°.

Cover for endoscope distal end part and endoscope

An endoscope distal end cover () is a cover for protecting a distal end () of an endoscope () which has an observation window at the distal end, including: a synthetic polymer film () which is to be located over the observation window () 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°.

Endoscope tip cover and endoscope

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.

Optical film

A synthetic polymer film whose surface has a plurality of raised or recessed portions, wherein a two-dimensional size of the plurality of raised or recessed portions is in a range of not less than 0.5 &#x3bc;m and not more than 3 &#x3bc;m when viewed in a normal direction of the synthetic polymer film, the synthetic polymer film has a crosslink structure and contains an organic carboxylic acid, at the lapse of 5 minutes since placing a 200 &#x3bc;L drop of water on the surface of the synthetic polymer film, a pH of an aqueous solution is less than 4, and an area equivalent circle diameter of the aqueous solution is not less than 20 mm, and at the lapse of 60 seconds since placing a drop of water on the surface of the synthetic polymer film, a static contact angle of the water drop with respect to the surface is less than 3&#xb0;.

Synthetic polymer film and production method of synthetic polymer film

The present invention provides a method for producing an antifouling film capable of long-term continuous production of an antifouling film having excellent antifouling properties. 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 applying a second release agent to a surface of a die coated with a first release agent; Process (3) of pushing the substrate to the surface of the die coated with the second release agent with the resin in between to form an uneven structure on a surface of the resin; and Process (4) 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 predetermined compound. The first release agent contains a predetermined compound. The second release agent contains a predetermined compound.

Method for producing antifouling film

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.

The method for producing an optical member of the present invention includes: a step (1) of applying a lower layer resin and an upper layer resin; a step (2) of pressing a die against the lower layer resin and the upper layer resin from the upper layer resin side, so as to form a resin layer including an uneven structure on a surface thereof; and a step (3) of curing the resin layer to form the polymer layer, wherein the lower layer resin contains an amide group, the lower layer resin has an amide group concentration of 1.5 mmol/g or more and less than 5 mmol/g, and the polymer layer has a minimum storage modulus E' of 1&#xd7;10Pa or higher and 1&#xd7;10Pa or lower at a bottom temperature of 110&#xb0; C. or higher and 210&#xb0; C. or lower.

Method for producing optical member and optical member

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 multiple 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 containing, in terms of active constituents, 15 to 40 wt % of an urethane acrylate containing six or more functional groups, 35 to 60 wt % of a multifunctional acrylate containing four or more functional groups and 3 to 15 ethylene oxide groups for each functional group, 15 to 30 wt % of a monofunctional acrylate with no ethylene oxide group, 0.5 to 10 wt % of a fluorine release agent containing a perfluoropolyether group and having a fluorine atom concentration of 50 wt % or lower, and 0.5 to 5 wt % of a polymerization initiator.

Antifouling film

A synthetic polymer film is a synthetic polymer film whose surface has a plurality of raised or recessed portions. The synthetic polymer film has a crosslink structure, and the crosslink structure does not contain any nitrogen element that is a constituent of a urethane bond. The synthetic polymer film contains an organic carboxylic acid, and an amount of water required for dissolving 1 g of the organic carboxylic acid is equal to or greater than 10 mL and less than 10000 mL. At the lapse of 5 minutes since placing a 200 &#x3bc;L drop of water on the surface of the synthetic polymer film, a pH of an aqueous solution is not more than 5, and an area equivalent circle diameter of the aqueous solution is not less than 20 mm. A synthetic polymer film whose surface has a microbicidal activity can be produced using a photocurable resin composition which contains an organic carboxylic acid or a photoacid generator which generates the organic carboxylic acid.

Synthetic polymer film whose surface has microbicidal activity, photocurable resin composition, manufacturing method of synthetic polymer film, and sterilization method with use of surface of synthetic polymer film

The optical member of the present invention includes a substrate and a polymer layer that is in direct contact with the substrate and includes on a surface thereof an uneven structure provided with multiple projections at a pitch not longer than a wavelength of visible light, the polymer layer containing an amide group, the polymer layer having an amide group concentration of 2 mmol/g or higher and lower than 5 mmol/g, the polymer layer having a minimum storage modulus E' of 1&#xd7;10Pa or higher and 1&#xd7;10Pa or lower at a bottom temperature of 110&#xb0; C. or higher and 210&#xb0; C. or lower in a dynamic viscoelasticity measurement with a measurement temperature range of &#x2212;50&#xb0; C. to 250&#xb0; C., a temperature rise rate of 5&#xb0; C./min, and a frequency of 10 Hz.

Optical member and polymer layer

A synthetic polymer film has a surface which has a plurality of raised or recessed portions, wherein the synthetic polymer film has a cross-linked structure, and the synthetic polymer film contains an antimicrobial additive which is permitted by law for addition to food and which has an antimicrobial effect.

Synthetic polymer film whose surface has microbicidal activity, plastic product which includes synthetic polymer film, sterilization method with use of surface of synthetic polymer film, photocurable resin composition, and manufacturing method of synthetic polymer film

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.

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.

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 %.

Growing community of inventors

Sakai, Japan

Yasuhiro Shibai