Highly air-permeable adsorption filter for decontaminating and deodorising air - has adsorbent granules bonded to carrier esp. reticulated polyurethane foam by di or poly:isocyanate prepolymer cured and foamed by moisture

摘要

A highly air-permeable adsorption filter consists of a 3D carrier (I) to which granular adsorbents (II) with a dia. more than 2 times, pref. 3 times, smaller are fixed with a di or polyisocyanate prepolymer (III), so that the pressure loss is up to 300 Pa for a 30 m thick layer at a flow of 1 m/s.