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US 2012/0070648 A1Published application
Process to increase the oleophobicity of ptfe, and resulting oleophobic articles
AssigneeGeneral Electric Company
InventorGopakumar Thottupurathu
Life of this patent
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Abstract
Method of making a oleophobic layer on a fluoropolymer (e.g., polytetrafluoroethylene (PTFE)). The oleophobic layer includes a fluoroalkyl acrylate copolymer. The fluoropolymer may be an expanded PTFE formed into a porous membrane. The oleophobicity may be sufficient to repel #8 oil (n-heptane) in accordance with AATCC Test Method 118. There are also coated articles including fluoropolymers and oleophobic layers made from fluoroalkyl acrylate copolymers.
Claims3
A coated article having a high oleophobicity comprising:
- a fluoropolymer comprising polytetrafluoroethylene;
- and a oleophobic layer directly on and contacting the fluoropolymer;
- wherein the oleophobic layer comprises a fluoroalkyl acrylate copolymer;
- and wherein the coated article repels n-heptane such that the oleophobic layer on the fluoropolymer can repel #8 oil according to AATCC test method 118 for oil repellency.
1 more element
Dependencies are inferred from the claim text.