The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 2020
Filed:
Nov. 21, 2019
Sharp Kabushiki Kaisha, Sakai, Osaka, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
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 %.