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US 6,432,510 B1Granted
Fluorinated resins having a surface with high wettability
AssigneeSamyang Corporation
InventorsSung Ryong Kim, Sung Chul Park, Jun Seob Song
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AssigneeSamyang Corporation
InventorsSung Ryong Kim, Sung Chul Park, Jun Seob Song
Estimating the term…
A fluorinated resin having enhanced wettability to water prepared by roughening a surface of the fluorinated resin such that a central line roughness average (Ra) of the surface is increased to at least 0.1 μm, and then depositing thereon a thin hydrophilic film while maintaining the central line roughness average (Ra) of at least 0.1 μm, the thin hydrophilic film being formed from a hydrophilic substance having a contact angle of water of less that 90°, and the resulting fluorinated resin having up to 20° of contact angle of water. The fluorinated resins are able to maintain high hydrophilicity even after prolonged exposure to the atmosphere and can be used in various fields that require bio-compatibility and in permeable membranes or filters.
A coated article comprising a fluorinated resin having enhanced wettability to water, said resin being prepared by roughening a surface of a fluorinated resin such that a central line roughness average (Ra) of said surface is at least 0.1 μm, and then depositing thereon a thin hydrophilic film while maintaining said central line roughness average (Ra) of at least 0.1 μm, said thin hydrophilic film being formed from a hydrophilic substance having a contract angle of water of less than 90°, and the resulting fluorinated resin having a contact angle of water of up to 20°.
Dependencies are inferred from the claim text.