Treated polymeric non-woven fabric

Details Treated polymeric non-woven fabric Treated polymeric non-woven fabric

B - Operations, Transporting

01

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319/50, 8/93.73

B01J 47/12 (2006.01) D06M 14/28 (2006.01) H01M 2/16 (2006.01) H01M 2/14 (2006.01)

Patent

CA 2112797

A polymeric sheet, which is particularly suited for use as a separator in an electrochemical device, is formed by graft copolymerising acrylic acid, or another vinyl monomer capable of reacting with an acid or a base to form a salt directly or indirectly with fibres of a non-woven sheet, whose outer surface is provided by a polyolefin, especially polypropylene. The polyolefin is crosslinked as a result of the polymerisation reaction. The polymerisation reaction is preferably initiated by exposure of the sheet to ultraviolet radiation, after impregnation with an appropriate solution of the vinyl monomer.

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