| abstract |
As a permeable membrane (13) of an air conditioner, which serves as a supply to a room to be air-conditioned, through the permeable membrane and / or the gas discharge from the room to be air-conditioned through the permeable membrane, an asymmetric one is used Membrane (13) used. The asymmetric membrane is made of a cyclic olefin addition polymer obtained by addition polymerization of a cyclic siloxane having olefin functionality or by addition polymerization of the cyclic siloxane having olefin functionality and a cyclic olefin compound, and wherein a proportion of a structural unit derived from the cyclic siloxane having olefin functionality is 5 to 100 mol% of the addition polymer and a number average molecular weight (Mn) in terms of polystyrene conversion as measured by GPC using tetrahydrofuran as a solvent is 10,000 to 2,000,000. |