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Milliken’s New PP Nucleating Agent Minimizes Migration in Food-contact Applications

Published on 2021-01-12. Author : SpecialChem

TAGS:  Formulations and Transparency      Additives for Packaging      Surface Modification    

milliken-nucleating-agentMilliken Chemical has launched a latest high-performance additive for polypropylene (PP) homopolymers that delivers an excellent balance of physical properties and superb aesthetics—all enabled through cleaner chemistry. The new grade can be used by thermoformers.

Reducing Customers’ Compliance Burden


Hyperform® HPN® 909ei addresses an important aspect for safety reassurance in the European Union. Tailored specifically to minimize migration, especially in food-contact applications, this new grade of Hyperform® has one Specific Migration Limit (SML) less than the previous generation product. A lower number of SMLs means there is one less substance that must be monitored and tested for, reducing customers’ compliance burden. With this simplification, the reassurance of safety is even stronger. This is vital, given that this type of PP homopolymer is typically used to thermoform drink cups and lids, food packaging, and trays.

Benefits of Hyperform® HPN® 909ei


Traditional nucleating agents require customers to sacrifice impact to gain greater stiffness. Hyperform® HPN® 909ei, however, delivers improved stiffness (flexural modulus) while maintaining the impact performance. It also provides isotropic shrinkage (similar shrinkage in both directions, thereby reducing warpage) and a higher heat-deflection temperature, which offers improved heat resistance vital for hot-fill and microwaveable applications. It also helps to override the nucleation effects of pigments, thereby reducing design complexity.

Hyperform® HPN® 909ei achieves all this without sacrificing aesthetics. Bhavesh Gandhi, global product line manager for Milliken’s Chemical Division said, “It yields products with excellent optical properties, including lower haze, reduced yellowing and an overall cleaner look. This can further enhance sustainability by allowing end users to replace other resins in various applications with highly recyclable polypropylene, with its low overall carbon footprint.


Source: Milliken
CHINAPLAS 2021
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