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:
Aug. 02, 2016
Filed:
Sep. 03, 2009
Tomoyuki Horio, Tokyo, JP;
Tomoyuki Horio, Tokyo, JP;
Dai Nippon Printing Co., Ltd., Tokyo, JP;
Abstract
An optical layered body, which has a high hardness and a fine external appearance without an interference fringe, and is excellent in optical properties and in an adhesion property between a substrate and a hard coat layer. An optical layered body includes a light-transmitting substrate; and a hard coat layer, wherein the light-transmitting substrate is made of triacetyl cellulose, the hard coat layer is a resin layer formed with a composition for forming a hard coat layer containing colloidal silica, a solvent, and pentaerythritol tri(meth)acrylate and/or dipentaerythritol hexa(meth)acrylate, an amount of the pentaerythritol tri(meth)acrylate and/or dipentaerythritol hexa(meth)acrylate is 25% by mass or more in 100% by mass of a resin solid content in the composition for forming a hard coat layer, an amount of the colloidal silica is 30 to 70% by mass in 100% by mass of a total of the colloidal silica and the resin solid content in the composition for forming a hard coat layer, and the solvent consists of solvents impermeable to the light-transmitting substrate.