Gas permeable materials

Details Gas permeable materials Gas permeable materials

B - Operations, Transporting

01

D

B01D 69/10 (2006.01) A41D 31/00 (2006.01) B01D 39/08 (2006.01) B01D 39/16 (2006.01) B01D 39/20 (2006.01) B01D 71/48 (2006.01) B01D 71/58 (2006.01) D04H 1/42 (2006.01) D04H 1/68 (2006.01) D06N 3/12 (2006.01)

Patent

CA 2150466

A gas permeable material having pores through it, in which the pore interiors are coated with the reaction product of a) an ester of a perfluoroalkyl alcohol and a poly-basic hydroxyl-carboxylic acid, and b) a melamine formsldehyde, urea-formaldehyde, or glycol modified formaldehyde. The material is oleophobic and is useful in filtration applictions and in garments.

Matière perméable aux gaz, renfermant des pores, dont la partie intérieure est revêtue avec le produit de réaction a) d'un ester d'alcool perfluoroalkylique et d'acide hydroxycarboxylique polybasique et b) de mélamine-formaldéhyde, d'urée-formaldéhyde ou d'un formaldéhyde modifié au glycol. La matière est oléophobe et est utile pour les procédés de filtration et dans les vêtements.

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