Toagosei Annual R&D Report “TREND” – Issue No. 29

KESMON NS-60 is a multi-odor gas adsorbent based on a metal organic framework (MOF), developed as a MOF deodorant, MOF gas adsorbent, and deodorant additive for complex odors. Its porous structure provides a specific surface area of 800–1,100 m²/g. This white powder has an average particle diameter of about 20 μm, water resistance, and heat resistance up to 350°C, supporting use in fibers, nonwoven fabric, resin, polypropylene, and polyester without compromising appearance.

KESMON NS-60 combines physical adsorption with partial chemical interaction. It captures malodor and VOC components in its pores, while ammonia, acetic acid, and isovaleric acid are retained through chemical interaction, helping reduce odor re-release compared with activated carbon. Tests indicated fast odor adsorption and high deodorization capacity, with stable deodorization performance for ammonia, trimethylamine, acetic acid, isovaleric acid, acetaldehyde, and toluene. In sensory evaluations, it reduced tetradecane odor intensity from 3.0 to 0.2 and 2-nonenal, an aging-related odor, from 3.5 to 0.5. It can therefore be evaluated as a VOC adsorbent, aging odor deodorant, 2-nonenal deodorant, ammonia gas adsorbent, acetic acid gas adsorbent, and activated-carbon alternative.

The heat-resistant deodorant powder can be dispersed with a binder to form a deodorant coating for nonwoven fabric or compounded as a resin-kneading deodorant and deodorant masterbatch additive. PET nonwoven fabrics coated at 1 or 2 g/m² met the SEK criterion of at least 70% odor reduction for ammonia and acetic acid. PET fibers containing 2 wt% NS-60 achieved odor reduction rates of 82% for acetic acid and 76% for ammonia after melt compounding and spinning. For recycled PP odor removal, 2 wt% NS-60 reduced composite odor intensity from 5.0 to 1.0 after heating at 80°C for 2 hours, versus 2.8 with zeolite. These results support use as a recycled plastic deodorant additive, multi odor deodorant, zeolite alternative, and complex odor adsorbent for indoor spaces, household products, fibers, resins, and nonwoven materials.