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. 26, 2014
Filed:
Dec. 03, 2010
Applicants:
Atsushi Sawamoto, Otsu, JP;
Kenta Nishibara, Otsu, JP;
Akimitsu Tsukuda, Otsu, JP;
Inventors:
Assignee:
Toray Industries, Inc., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 3/26 (2006.01); H01M 2/16 (2006.01); C08J 5/22 (2006.01); H01G 9/02 (2006.01); H01G 11/52 (2013.01); C08L 77/10 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01G 9/02 (2013.01); C08J 2439/06 (2013.01); H01M 10/0525 (2013.01); C08J 5/2256 (2013.01); Y02E 60/12 (2013.01); Y02E 60/13 (2013.01); H01M 2/1653 (2013.01); C08J 2377/00 (2013.01); H01G 11/52 (2013.01); C08L 77/10 (2013.01);
Abstract
A porous film includes aromatic polyamide as a constituent component that has high heat resistance, high air permeability and high affinity to electrolytes. It is a porous aromatic polyamide film including aromatic polyamide and a hydrophilic polymer, wherein the hydrophilic polymer accounts for 12 to 50 parts by mass per 100 parts by mass of the aromatic polyamide, the thickness being 2 to 30 micrometers, the Gurley air permeability being 0.5 to 300 seconds/100 ml, and the thermal shrinkage rate being −0.5 to 1.0% at 200° C.