Air-permeable film imparted with oil repellency
AssigneeNitto Denko Corporation
InventorYoshiki Ikeyama
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Abstract
Disclosed is an air-permeable film imparted with oil repellency, including a porous body having a surface coated with an oil-repellent agent. The oil-repellent agent contains a linear fluorine-containing hydrocarbon group represented by —R1C5F10CH2C4F9 or —R2C6F13, where R1 and R2 are each independently an alkylene group having 1 to 12 carbon atoms or a phenylene group, and the porous body is a porous formed body composed of ultra-high molecular weight polyethylene fine particles that are bound together. This air-permeable film is imparted with oil repellency without significantly reducing its air permeability.
Claims4
An air-permeable film imparted with oil repellency, comprising:
- a porous body having a surface coated with an oil-repellent agent,
- wherein the oil-repellent agent comprises a linear fluorine-containing hydrocarbon group represented by —R1C5F10CH2C4F9, where R1 is an alkylene group having 1 to 12 carbon atoms or a phenylene group,
- the porous body is a porous formed body composed of ultra-high molecular weight polyethylene fine particles that are bound together,
- the air-permeable film has an air permeability of 15 seconds/100 ml or less in terms of Gurley number, and
- a 5 mm-diameter droplet of an organic solvent that is n-decane or methanol does not penetrate the surface within 30 seconds after the droplet is applied onto the surface.
Dependencies are inferred from the claim text.