AIR-PERMEABLE FILTER PROVIDED WITH OIL REPELLENCY
First Claim
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1. An air-permeable filter comprising a porous membrane having a surface coated with an oil-repellent agent, wherein a sliding angle of 20 μ
- l of hexadecane or pentadecane on the surface of the filter is 60°
or less.
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Abstract
The present invention provides an air-permeable filter capable of maintaining excellent air permeation performance without being clogged even in an environment involving exposure to an oil, oil mist, or ink. The present invention relates to an air-permeable filter including a porous membrane having a surface coated with an oil-repellent agent, the filter being characterized in that a sliding angle of 20 μl of hexadecane or pentadecane on the surface of the filter is 60° or less.
26 Citations
7 Claims
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1. An air-permeable filter comprising a porous membrane having a surface coated with an oil-repellent agent, wherein a sliding angle of 20 μ
- l of hexadecane or pentadecane on the surface of the filter is 60°
or less. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- l of hexadecane or pentadecane on the surface of the filter is 60°
Specification