Analysis on what is synthetic PET film
Apr 13, 2023
The main raw materials for synthetic PET are: terephthalic acid (TPA), dimethyl terephthalate (DMT), and ethylene glycol (EG). Catalysts are mainly metal compounds, such as antimony-based catalysts, germanium-based catalysts, and titanium-based catalysts. Among them, antimony-based catalysts are most widely used due to their high activity, few side reactions, low degree of promotion of polyester thermal degradation reaction, low price, and high-quality products. The commonly used antimony-based catalysts are antimony glycol, antimony acetate and antimony trioxide. However, the toxicity of antimony compounds will have adverse effects on human health and the environment. In recent years, countries around the world have put forward some new requirements for the use of antimony. For example, the European Union requires that the amount of antimony transferred to food per kilogram of packaging should be less than 0.01mg/kg .
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