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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.:

US 9184372 B1

PDFFull Text
Date of Patent:
Nov. 10, 2015

Filed:

Aug. 05, 2014

Piezoelectric polymer material and method for producing same

Applicants:

Mitsui Chemicals, Inc., Minato-ku, JP;

A School Corporation Kansai University, Suita-shi, JP;

Inventors:

Mitsunobu Yoshida, Ichihara, JP;

Shunsuke Fujii, Ichihara, JP;

Hitoshi Onishi, Chiba, JP;

Yoshiro Tajitsu, Suita, JP;

Taizo Nishimoto, Chiba, JP;

Kazuhiro Tanimoto, Chiba, JP;

Kenichi Goto, Chiba, JP;

Assignees:

MITSUI CHEMICALS, INC., Tokyo, JP;

A SCHOOL CORPORATION KANSAI UNIVERSITY, Osaka, JP;

Attorney:

Buchanan, Ingersoll & Roney PC

Primary Examiner:

Robert Jones, Jr

Int. Cl.
CPC ...
H01L 41/193 (2006.01); C08L 67/04 (2006.01); H01L 41/45 (2013.01); B29C 55/00 (2006.01); B29C 55/04 (2006.01); B29C 71/00 (2006.01); B29C 71/02 (2006.01); H01L 41/18 (2006.01); C08L 27/16 (2006.01); B29K 67/00 (2006.01); B29K 105/00 (2006.01); B29L 7/00 (2006.01); B29L 31/34 (2006.01);
U.S. Cl.
CPC ...
H01L 41/193 (2013.01); B29C 55/005 (2013.01); B29C 55/04 (2013.01); B29C 71/0009 (2013.01); B29C 71/02 (2013.01); C08L 67/04 (2013.01); H01L 41/183 (2013.01); H01L 41/45 (2013.01); B29C 2071/022 (2013.01); B29K 2067/046 (2013.01); B29K 2105/256 (2013.01); B29K 2995/0003 (2013.01); B29K 2995/004 (2013.01); B29K 2995/0026 (2013.01); B29K 2995/0051 (2013.01); B29K 2995/0088 (2013.01); B29L 2007/002 (2013.01); B29L 2031/34 (2013.01); C08L 27/16 (2013.01);
Abstract

A piezoelectric polymer material comprising a helical chiral polymer having a weight average molecular weight of from 50,000 to 1,000,000 and optical activity, the piezoelectric polymer material having: crystallinity as obtained by a DSC method of from 40% to 80%; a transmission haze with respect to visible light of 50% or less; and a product of the crystallinity and a standardized molecular orientation MORc, which is measured with a microwave transmission-type molecular orientation meter at a reference thickness of 50 μm, of from 40 to 700.

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