An oil-and water-repellent gas-permeable filter

Details An oil-and water-repellent gas-permeable filter An oil-and water-repellent gas-permeable filter

B - Operations, Transporting

01

D

B01D 39/00 (2006.01) B01D 39/08 (2006.01) B01D 67/00 (2006.01) B32B 5/24 (2006.01)

Patent

CA 2117675

A oil and water-repellent filter which contains a porous filter material that has its internal and external surfaces coated with a compound formed by combining a fluroropolymer having a fluorine-containing aliphatic cydic structure in the main chain and a fluoropolymer containing polyfluroalkyl groups. The coating imparts superior oil- and water-repellency without impaimnent to the flow of air or other gases through the filter.

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