| 摘要 |
PURPOSE:To improve deodorizing efficiency of a small amt. of a deodorizing material by prepg. the deodorizing material from fine powder pulverized to <=10mu particle size after evaporating water contained in a fossil of shell produced from a specified district by heating at 200-300 deg.C. CONSTITUTION:Fossils of shell produced from Toyama mine and Kokudo Takaoka mine, which are legal mines in Takaoka City in Toyama Prefecture, are heated at 200-300 deg.C to evaporate the water in the fossils. Then, the fossils are pulverized to <=10mu fine powder, and used as a deodorizing material. The fine pulverized product is added easily to, concretely, film, polyvinyl chloride sheet, foaming material, fiber, nonwoven fabric, paper, food, etc. as a deodorizing material. The obtd. deodorizing material improves deodorizing effect with a small amt. Moreover, since the fossil of shell is weakly alkaline, the deodorizing material can adsorb both acidic compds. (H2S) and basic compds. (trimethylamine) simultaneously. |
