Oleophobic membrane materials by oligomer polymerization for...

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B - Operations, Transporting

01

D

B01D 39/00 (2006.01) B01D 39/16 (2006.01) B01D 39/20 (2006.01)

Patent

CA 2434651

Oleophobic and hydrophobic filters for filter venting applications are made by forming a fluorosulfone coating on the surface of a filtration substrate. The filters have high water penetration pressures and high air permeabilities. The coatings are formed by grafting a fluorosulfone oligomer to a polymeric substrate.

On fabrique des filtres oléophobes et hydrophobes utilisés en tant que filtres d'aération par création d'un revêtement de fluorosulfone sur la surface d'un substrat de filtration. Ces filtres présentent des pressions élevées de pénétration d'eau et des perméabilités élevées à l'air. On forme ces revêtements par greffe d'un oligomère de fluorosulfone sur un substrat polymère.

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