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. 31, 2022
Filed:
Nov. 23, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Sin Woo Kim, Daejeon, KR;
Byeong In Ahn, Daejeon, KR;
Hyun Seong Ko, Daejeon, KR;
Seijung Park, Daejeon, KR;
Assignee:
LG CHEM, LTD., Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01); B01D 46/02 (2006.01); B01D 69/02 (2006.01); B01D 71/34 (2006.01); B01D 71/36 (2006.01); C08J 5/24 (2006.01); C08J 9/36 (2006.01);
U.S. Cl.
CPC ...
B01D 46/02 (2013.01); B01D 69/02 (2013.01); B01D 71/34 (2013.01); B01D 71/36 (2013.01); C08J 5/24 (2013.01); C08J 9/365 (2013.01); B01D 2323/46 (2013.01); B01D 2325/02 (2013.01); C08J 2327/18 (2013.01); C08J 2327/20 (2013.01);
Abstract
A porous fluorine resin film in which a fibril structure is stabilized through impregnation coating of a water-repellent and oil-repellent polymer having a high oil repellency grade, and free shrinkage also proceeds before impregnation and application of the water-repellent and oil-repellent polymer, thereby improving dimensional stability, and a method for preparing the porous fluorine resin film.