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:
Apr. 25, 2017
Filed:
Oct. 16, 2014
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
June Park, Suwon-si, KR;
Takahiro Endo, Suwon-si, KR;
Jung-Hyun Nam, Suwon-si, KR;
Jong-Hwan Park, Suwon-si, KR;
Iwao Fukuchi, Suwon-si, KR;
SAMSUNG SDI CO., LTD., Yongin-Si, Gyeonggi-Do, KR;
Abstract
A separator for a battery, a battery, and a method of preparing a graft copolymer for a binder, the separator including a porous substrate; a coating layer on at least one surface of the porous substrate, the coating layer including an inorganic oxide; and a binder between the porous substrate and the inorganic oxide or between adjacent particles of the inorganic oxide, the binder including a graft copolymer, wherein the graft copolymer has a backbone of a polyvinylidene fluoride-based polymer or a polyvinylidene fluoride-based copolymer, and a pendant chain grafted to the backbone, the pendant chain including a hydrophilic repeating unit, and fluorine atoms in the backbone of the graft copolymer are partially substituted with at least one of chlorine, bromine, or iodine.