| 摘要 |
PCT No. PCT/SE92/00176 Sec. 371 Date Sep. 16, 1993 Sec. 102(e) Date Sep. 16, 1993 PCT Filed Mar. 20, 1992 PCT Pub. No. WO92/16291 PCT Pub. Date Oct. 1, 1992.A passive filter for taking up gaseous substances, preferably gaseous smelling substances, from a space, including a porous sorbating, self regenerating material composition, including two material components (A, B), of which a first material component (A) consists of one or more porous materials such as perlite, zeolite, bentonite, silicon dioxide ground to powder or christobalite, and a second material component (B) consists of one or more materials with the capability to take up water molecules directly from the surrounding air, such as silicon dioxide gel, starch or derivatives of cellulose, gypsom, silicates of alkali, aluminum silicate, or fuller's earth. The material components (A, B) are kept joined into a lattice by means of a binder, at which the first material component (A) join with 50-95%, preferably 80-90% (percentage of weight), and the second material component (B) with 5-50%, preferably 10-20% (percentage of weight), in the material composition. |
