Filter sheet.

摘要

Deodorant comprising 5 to 100% by weight of a calcium phosphate compound having a molar ratio of Ca/P of 0.8 to 2.0, a deodorant sheet and filter sheet containing such calcium phosphate compound, and a functional paper containing 10 to 80% by weight of a calcium phosphate compound as well as a filtering medium for an exhaust gas which comprises a ceramic material containing 5 to 100% by weight of a calcium phosphate compound as well as a filter cartridge and exhaust gas filter containking the filtering medium. Based on excellent properties of the incorporated calcium phosphate compound, the agents and products according to the present invention exhibit a highly improved adsorptivity to an oil-soluble substance, odor substance, animal or vegetable cell, virus, biopolymeric substance or other substances and therefore can be advantageously used in various fields of technology. For example, the functional paper can be used as a deodorant, filter medium and adsorbent as well as flame-retardant paper. The filtering medium, filter cartridge and filter can be used in an exhaust system to purity an exhaust gas produced therein.