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:
May. 30, 2017
Filed:
Sep. 17, 2012
Lg Chem, Ltd., Seoul, KR;
Toray Battery Separator Film Co., Ltd., Tochigi, JP;
Jeong-Min Ha, Daejoen, KR;
Kee-Young Kim, Daejeon, KR;
Byeong-Gyu Cho, Daejeon, KR;
Sun-Mi Jin, Daejeon, KR;
No-Ma Kim, Daejeon, KR;
Jong-Hun Kim, Daejeon, KR;
Byoung-Jin Shin, Daejeon, KR;
LG Chem, Ltd., , KR;
Abstract
A separator may include (A) a porous substrate having pores, and (B) a porous coating layer formed on at least one surface of the porous substrate and made from a mixture of inorganic particles and a binder polymer, and the binder polymer may contain a copolymer of (a) a first monomer unit with at least one of an amine group and an amide group at a side chain, and (b) a second monomer unit of (meth)acrylate with an alkyl group having 1 to 14 carbon atoms. The porous coating layer of the separator may have a high packing density, thereby easily forming a thin film battery without hindering safety, and may have good adhesive strength with the porous substrate, thereby preventing detachment of the inorganic particles in the porous coating layer during assembly of an electrochemical device.