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:
Sep. 23, 2014
Filed:
Dec. 07, 2005
Seok Koo Kim, Daejeon, KR;
Sang Young Lee, Daejeon, KR;
Soon Ho Ahn, Daejeon, KR;
Jung Don Suk, Daejeon, KR;
Hyun Hang Yong, Seoul, KR;
Seok Koo Kim, Daejeon, KR;
Sang Young Lee, Daejeon, KR;
Soon Ho Ahn, Daejeon, KR;
Jung Don Suk, Daejeon, KR;
Hyun Hang Yong, Seoul, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
Disclosed is a porous film comprising: (a) a porous substrate having pores; and (b) a coating layer formed on at least one region selected from the group consisting of a surface of the substrate and a part of the pores present in the substrate, wherein the coating layer comprises styrene-butadiene rubber. An electrochemical device using the porous film as a separator is also disclosed. The porous film is coated with a styrene-butadiene polymer, whose rubbery characteristics can be controlled, and thus provides improved scratch resistance and adhesion to other substrates. When the porous film is used as a separator for an electrochemical device, it is possible to improve the safety of the electrochemical device and to prevent degradation in the quality of the electrochemical device.