Hydrophilic monomer treated microporous films

Details Hydrophilic monomer treated microporous films Hydrophilic monomer treated microporous films

C - Chemistry, Metallurgy

08

J

204/91.55

C08J 9/40 (2006.01) B01D 67/00 (2006.01) C08J 7/18 (2006.01) H01M 2/16 (2006.01)

Patent

CA 1152942

Abstract of the Disclosure The present invention is directed to a process for rendering a normally hydrophobic polyolefinic open celled microporous film relatively permanently hydrophilic, improving the water flow rate therethrough, and reducing the electrical resistance thereof by chemically fixing a controlled amount of at least one hydrophilic organic hydrocarbon monomer to the surface of the micropores of the film with ionizing radiation. The amount of hydrophilic monomer which is chemically fixed to the surface of the micropores is con- trolled to avoid plugging of the pores subsequent to the radiation treatment. -1-

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