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:
Feb. 17, 2009
Filed:
May. 31, 2005
Tatsumi Amano, Ibaraki, JP;
Natsuki Kobayashi, Ibaraki, JP;
Masahiko Ando, Ibaraki, JP;
Kazuhito Okumura, Ibaraki, JP;
Tatsumi Amano, Ibaraki, JP;
Natsuki Kobayashi, Ibaraki, JP;
Masahiko Ando, Ibaraki, JP;
Kazuhito Okumura, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
The present invention provides a pressure-sensitive adhesive which can prevent electrification of a non-electrification-prevented adherend upon peeling, suppresses occurrence of peeling off even with time or via treatment under a high temperature, and is excellent in adhesion reliance, as well as an antistatic pressure-sensitive adhesive sheet, and surface protecting film using this. The pressure-sensitive adhesive composition of the present invention contains an ionic liquid, and a polymer having a glass transition temperature of Tg of 0° C. or lower as a base polymer, as well as an ethylene oxide group-containing compound and/or a surfactant.