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. 07, 2017
Filed:
Jun. 10, 2011
Yong Kyoung Kim, Daejeon, KR;
Jang Weon Rhee, Daejeon, KR;
Dong Jin Joo, Daejeon, KR;
Je an Lee, Daejeon, KR;
Jung Moon Sung, Seoul, KR;
Yong Kyoung Kim, Daejeon, KR;
Jang Weon Rhee, Daejeon, KR;
Dong Jin Joo, Daejeon, KR;
Je An Lee, Daejeon, KR;
Jung Moon Sung, Seoul, KR;
SK Innovation Co., Ltd., Seoul, KR;
Abstract
Disclosed is a microporous composite film having a coating layer formed on at least one surface of a microporous polyolefin film, wherein the coating layer simultaneously includes a high thermostable polymer resin and inorganic particles. More specifically, the present invention relates to a microporous composite film in which an area shrinkage at 170° C. for 1 hr is 10% or less; a tensile modulus in each of a machine direction and a transverse direction at 130° C. is 0.5 MPa to 7.0 MPa; a ratio between permeability of a microporous composite film (CCS) and permeability of a microporous polyolefin film (S) is 1.1≦CCS/S≦3.5; and a permeability of the microporous composite film is 450 sec or less.