ADDITIVES | ODOUR


AqFresh in rigid recycled plastics from 3 different suppliers Source: Aqdot


retention, colour and yellowing index retention and gel reduction. Zachary Hoffman, Business Develop- ment Lead Europe, Middle East & Africa at Kisuma, said: “Beyond a diversified suite of magnesium- based additives already available for this market, we are actively developing the next generation of these unique products, including tailormade solutions with functionalities engineered to boost the perfor- mance, efficiency and sustainability of recycled plastics or retain virgin-like properties. By enhancing colour, reducing odour, improving melt flow and minimizing gels, we can achieve consistent, high- quality outcomes together and accelerate the shift towards a more sustainable plastics value chain.” The company said its magnesium-based additives for recycled plastics are focused on aligning with the EU’s directives for increasing the recycled content in many industries, such as packaging (PPWR), automotive (ELV), and building/ construction. It added that due to the non-toxic profile of these products, they can provide further value to customers seeking to minimize their product carbon footprint and eliminate the use of additives at risk of becoming regulated out of the market on a more global basis. Cambridge, UK-based additives company Aqdot


says its AqFresh technology can significantly reduce VOCs and odours according to VDA 270 C3, VDA 278, ISO12219-2 and VW’s PV 3942. The additive is marketed for both automotive interiors and packaging, and is said to neutralise odours at low loadings, including VOCs released post-moulding. AqFresh uses cucurbiturils, a family of barrel- shaped molecules known for their ability to bind and trap other compounds. Cucurbiturils’ structure features a hollow, water-repellent cavity and polar openings at each end, which allows them to selec- tively encapsulate a variety of smaller molecules, including many VOCs. This makes them effective at


52 PLASTICS RECYCLING WORLD | October 2025


neutralising unwanted smells without chemically altering the surrounding material. AqFresh is produced in a new modular manufacturing facility in Menadiona, Spain, with 500 tonnes/year capacity. CAI Additives offers odour-reducing additives including LDV 8010 for ABS and PC/ABS. The company said: “Already proven in automotive interior applications, especially EVs, it effectively removes VOCs without impacting mechanical or visual performance. It requires no capital invest- ment and supports typical loadings between 0.5% and 2.0%.” Another CAI product LDV-1035T has been developed for deodorisation in PP, TPO, and talc-filled compounds, including recycled grades. The company said it is ideal for odour control use in automotive trim, under-hood applications, and recy- cled resins. It said that both products are: free-flow- ing granules, easy to dose and handle; non-toxic, odorless, and stable in processing; and designed for permanent effect, not temporary masking. In March this year, Evonik launched Tego Sorb


PY 88 TQ, a zinc ricinoleate-based odour absorber designed for use in polymer compounding and masterbatch production. It functions by binding malodorous compounds such as hydrogen sulphide, mercaptans, thioethers, isovaleric acid, amines, and ammonia, effectively neutralising them without imparting any additional fragrance. This additive is particularly suitable for polyole- fins (LDPE, PP) and recycled PA. It also aids in reducing odours during the dispersion of pigments such as ultramarines, yellows, and oxidised carbon blacks. For applications involving all-acrylic, vinyl-acrylic and styrene-acrylic copolymers – with malodorous butyl acrylates – an aqueous formula- tion of Tego Sorb PY 88 TQ is available. In processing, Tego Sorb PY 88 TQ can be dry-blended before compounding or directly fed


www.plasticsrecyclingworld.com


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