US Patent:
20180043656, Feb 15, 2018
Inventors:
Kwangjin Song - Charlotte NC, US
Jennifer M. Song - Nashville TN, US
Jane M. Song - Washington DC, US
Assignee:
Liso Plastics, L.L.C. - Charlotte NC
International Classification:
B32B 5/18
C08J 5/18
C08J 9/26
H01M 2/16
H01G 11/52
H01M 8/0245
B32B 27/08
B32B 27/20
H01G 9/02
C08J 9/28
H01M 8/0239
Abstract:
Provided is an oriented multilayer porous film comprising at least one layer comprising: a heat, solvent, and degradation resistant matrix polymer; a plurality of interconnecting pores; and a porosity less than 90%. The film is made by a dry and/or wet method, with its multilayer structure constructed by coextrusion, lamination, and coating. The film of this disclosure finds a wide range of applications as a permselective medium for use in energy harvesting and storage, filtration, separation and purification of gases and fluids, COand volatile capture, electronics, devices, structural supports, packaging, labeling, printing, clothing, drug delivery systems, bioreactor, and the like. The film is preferably used as a separator of lithium-ion, lithium-sulfur, lithium-air, metal-air, and nonaqueous electrolyte batteries.