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. 21, 2012
Filed:
Mar. 19, 2007
Fumiaki Nishino, Ichihara, JP;
Katsunori Nishiura, Ichihara, JP;
Kazuyuki Fukuda, Ichihara, JP;
Toshihiko Takaki, Chiba, JP;
Takehiro Miyashita, Ichiraha, JP;
Fumiaki Nishino, Ichihara, JP;
Katsunori Nishiura, Ichihara, JP;
Kazuyuki Fukuda, Ichihara, JP;
Toshihiko Takaki, Chiba, JP;
Takehiro Miyashita, Ichiraha, JP;
Mitsui Chemicals, Inc., Tokyo, JP;
Abstract
Disclosed is a method for producing an optical film composed of a transparent resin and a metal oxide, which film has high light transmittance and light diffusion property even it is formed thin. Also disclosed is such an optical film. Specifically disclosed is a method for producing an optical film having a total light transmittance of not less than 70% and a haze value of not less than 20%, which comprises a step (A) wherein a metal compound to form a metal oxide through a sol-gel reaction is subjected to a sol-gel reaction in a solvent; a step (B) for providing a solution containing a transparent resin as a solute; a step (C) for mixing the mixture obtained in the step (A) with the solution obtained in the step (B); and a step (D) wherein the mixture obtained in the step (C) is applied or spread over a substrate or container and then heated for evaporating the solvent, thereby forming a film thereon.