公开(公告)号：US20210345860A1

公开(公告)日：2021-11-11

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

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：US20190092883A1

公开(公告)日：2019-03-28

申请号：US16141883

申请日：2018-09-25

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YASUHIRO SHIBAI ,  MIHO YAMADA ,  KEN ATSUMO ,  KIYOSHI MINOURA

IPC: C08F22/10 ,  C08K5/09 ,  C08K5/092 ,  C08K5/521 ,  C08J5/18 ,  A61L2/23 ,  A01N37/04 ,  A01N57/14 ,  A01N25/10 ,  C02F1/50

Abstract: 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 μL 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.

公开(公告)号：US20190041549A1

公开(公告)日：2019-02-07

申请号：US16078210

申请日：2017-02-15

Applicant: SHARP KABUSHIKI KAISHA

Inventor： YASUHIRO SHIBAI ,  KEN ATSUMO ,  HIDEKAZU HAYASHI

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

Abstract: 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 1×108 Pa or higher and 1×109 Pa or lower at a bottom temperature of 110° C. or higher and 210° C. or lower.