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:
Jan. 15, 2013
Filed:
Aug. 07, 2008
Toshinori Kato, Tsukuba, JP;
Tomiaki Otake, Tsukuba, JP;
Taketoshi Okuno, Kurashiki, JP;
Nozomu Sugoh, Kurashiki, JP;
Toshihiro Hirai, Ueda, JP;
Toshinori Kato, Tsukuba, JP;
Tomiaki Otake, Tsukuba, JP;
Taketoshi Okuno, Kurashiki, JP;
Nozomu Sugoh, Kurashiki, JP;
Toshihiro Hirai, Ueda, JP;
Kuraray Co., Ltd., Kurashiki-Shi, JP;
Shinshu University, Matsumoto-Shi, JP;
Abstract
A dielectric material for a polymeric actuator having a moveable part of the polymeric actuator driven by an electric field, the dielectric material containing a block copolymer (A) having a microphase-separated structure including a polymer block (B1) and a polymer block (B2), both of which are immiscible with each other. A main compositional unit in both of the polymer block (B1) and the polymer block (B2) is a (meth)acrylic ester unit, the polymer block (B1) having an alpha-dispersion temperature of 70° C. or more, and the polymer block (B2) having an alpha-dispersion temperature of 25° C. or less. The polymeric actuator provides the dielectric material between electrodes.