Composite membrane having oleophobic properties

Details Composite membrane having oleophobic properties Composite membrane having oleophobic properties

2005-08-15

2008-08-05

Vo, Hai (Department: 1794)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S319700, C428S319900, C428S315500, C428S315700, C428S543000, C428S306600, C428S308400, C524S544000, C524S555000, C524S556000, C524S560000

Reexamination Certificate

active

07407703

ABSTRACT:
An air permeable composite article that in one embodiment includes a porous base membrane that includes a plurality of nodes and fibrils defining a plurality of interconnecting pores extending through the porous base membrane with each node and fibril having a surface. The composite article also includes a precipitated coating material deposited on the surfaces of the plurality of nodes and fibrils. The coating material includes a copolymer formed from a fluorinated acrylate or methacrylate, an n-alkyl acrylate or methacrylate, and an isocyanate crosslinker. The precipitated coating material provides oil and contaminating agent resistance of at least a number six measured in accordance with AATCC 118 test method.

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