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Phosphite Esters and the Invisible Heat Shield Protecting 460 Million Tonnes of Plastics, Recycled Resins and High-Speed Manufacturing
At 2:00 a.m., a polypropylene line producing 35 tonnes per hour does not look fragile. The extruder is 25 metres long, the melt approaches 240°C, and the plant may be worth more than USD 1 billion. Yet the colour, molecular weight and saleability of every pellet can depend on less than 2 kilograms of stabilizer in each tonne. This is the role of Phosphite Esters: small-dose chemistry...
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