MATERIALS | MINERAL FILLERS
such as the use of renewable electricity in the manufacturing facility where the product was made. Requests for PCF have become common for some end-use industries, such as automotive.
Eggshells and talc Renova Technologies, founded in 2019 in the US state of Iowa, aims to reduce carbon footprint by upcycling eggshell waste from Iowa’s large egg production industry. The company extracts the eggshell membrane and calcium carbonate from the waste stream and then separates the two materials. The collagen-rich membrane goes into food, nutraceuticals, and cosmetics, and the eggshell- derived calcium carbonate can be used as a food ingredient, soil conditioner or filler for plastics. This biobased and biodegradable calcium
Comparative performance of two new Omya fillers, Smartfill 55-AV and Omyaspace 806-OG, which are advanced grades of calcium carbonate specifically designed for engineering plastics Source Omya
glass fibre. Industry average carbon footprint for fine ground, coated calcium carbonates such as these is less than 300 kg carbon dioxide equivalent per metric tonne (kg CO2
much lower than titanium dioxide or engineering polymers, which can range from nearly 4,000 to more than 6,000 kg CO2
/t. Additionally, Omya Smartfill 55-AV is produced
from pre-consumer recycled calcium carbonate, which is not internal regrind but is instead sourced from other industries, noted Schulz. In addition to industry average carbon footprint data, Omya can provide specific product carbon footprint (PCF) data to customers that takes into account inputs,
20 COMPOUNDING WORLD | June 2026
carbonate mineral has a lower carbon footprint than mined calcium carbonate, and its PCF was evaluated and recently published, the company reported. The company’s processing methods can provide predictable particle size and material behavior, and it uses a heat treatment that aids material cleanliness and consistency. In addition to calcium carbonate fillers, the company offers compounded ReOvo Eggshell Calcium Polypropyl- ene (PP) Pellets that are ready for use in injection moulding applications. Last May, IMI Fabi acquired Elementis Talc, the industrial talc business of Elementis. “This acquisi- tion enhances IMI FABI’s ability to serve a broader range of industries with sustainable, high-perfor- mance talc products, and positions the company for long-term innovation and global leadership,” the company said in the announcement. The business, formerly Mondo Minerals before its acquisition by Elementis in 2018, is now a group within IMI Fabi that is developing the Mondo Minerals brands. IMI Fabi has introduced a talc product line called
/t). This carbon footprint is
NeoFill that is designed for applications where colour is less critical. NeoFill ECO is a lightgrey, ultrafine talc for automotive applications that targets performance comparable to high-bright- ness ultrafine references in TPO/PP compounds, said the company. Another grade, NeoFill EXTRA, offers high stiffness. Other product lines for automotive targets include the HTP and HTPultra
families, which are high-brightness, high-lamellarity and high-purity talc grades. “Automotive TPO and PP parts require a
controlled balance of stiffness, impact retention and dimensional stability [low shrinkage and low coefficient of linear thermal expansion],” the company said. Low odour, long-term heat aging
www.compoundingworld.com
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