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:
Feb. 06, 2018
Filed:
Oct. 30, 2015
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Cheon-Il Park, Daejeon, KR;
Won-Sik Bae, Daejeon, KR;
Bi-Oh Ryu, Daejeon, KR;
Kyoung-Min Kim, Daejeon, KR;
Heon-Sik Song, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 35/02 (2006.01); B29C 35/04 (2006.01); H01M 10/00 (2006.01); H01M 2/14 (2006.01); B29C 47/00 (2006.01); H01M 2/16 (2006.01); B29K 23/00 (2006.01); B29K 105/04 (2006.01); B29L 31/34 (2006.01); H01M 10/052 (2010.01); B29C 47/88 (2006.01);
U.S. Cl.
CPC ...
H01M 2/145 (2013.01); B29C 35/041 (2013.01); B29C 47/0021 (2013.01); B29C 47/0057 (2013.01); H01M 2/1653 (2013.01); B29C 47/8845 (2013.01); B29K 2023/00 (2013.01); B29K 2105/04 (2013.01); B29K 2995/0007 (2013.01); B29L 2031/3468 (2013.01); H01M 10/052 (2013.01);
Abstract
Disclosed is a method of preparing a crosslinked polyolefin separator including preparing a silane grafted polyolefin solution using a polyolefin having a weight average molecular weight higher than or equal to 200,000, a diluent, an alkoxy group containing vinylsilane, and an initiator, forming the silane grafted polyolefin solution in a sheet shape and stretching, extracting the diluent from the stretched sheet to produce a porous membrane, and crosslinking the porous membrane in the presence of water, and a crosslinked polyolefin separator.