Gas-permeable membrane

Details Gas-permeable membrane Gas-permeable membrane

B - Operations, Transporting

65

D

B65D 65/34 (2006.01) B65D 65/38 (2006.01) B65D 81/20 (2006.01) C08J 5/22 (2006.01)

Patent

CA 2510614

Gas-permeable membranes comprising a microporous film and a coating on the microporous film, the coating being obtained by coating the microporous film with a liquid coating composition comprising a polymer and hollow polymeric particles dispersed in the composition, and then solidifying the coating. The gas-permeable membrane has a reduced ratio of carbon dioxide permeability to oxygen permeability.

L'invention concerne des membranes perméables aux gaz comprenant un film microporeux et un revêtement sur le film microporeux, ce revêtement étant obtenu par revêtement du film microporeux avec une composition de revêtement liquide contenant un polymère et des particules polymères creuses réparties dans la composition, puis par solidification du revêtement. Cette membrane perméable aux gaz présente un rapport réduit perméabilité au dioxyde de carbone/perméabilité à l'oxygène.

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