COMPATIBILISERS | MATERIALS


PE containing 20% PA6 without a compatibiliser (left image) and with Ingenia Polymers’ INCIRCLE compatibiliser (right image)


Images: Ingenia Polymers


using packaging that can be recycled.” McCormick also sees increased interest in the


use of compatibilisers for in-house recycling of barrier film scrap, rather than sending the scrap to landfill or incineration. Ingenia’s INCIRCLE IP1601 was introduced in October 2023 to support this use. The company has successfully completed the third-party lab testing required by the US Associa- tion of Plastic Recyclers (APR) to receive recognition under the APR Design for Recyclability program. “This product allows for film structures with higher levels of polyamide and EVOH to be recycled than was previously possible, due to the improved compatibilisation performance of INCIRCLE IP1601 over other products available in the market,” says McCormick. The masterbatch can be used either as part of the film structure to enable future recycling, or it can be added during compounding of scrap film into recycled pellets. Ingenia Polymers is developing additional


compatibiliser grades for other systems (eg PE/PP) and evaluating the recycling of PE/PET lamination structures through compounding PE/PET scrap with Ingenia’s INCIRCLE IP1601 to generate rPE/ PET capable of meeting typical can liner specifica- tions. “Early results are very promising and support further field trials. This is an exciting application, as there has been no option for recycling of PE/PET scrap produced during converting operations and


the materials are either landfilled or incinerated in most cases,” McCormick says. BYK’s latest product, SCONA TPPET 4214 PA, is based on PET functionalised with GMA. It is best used as a high-molecular-weight viscosity modifier, but it can also act as a compatibliser or coupling agent. The additive helps mitigate the challenge of reduced intrinsic viscosity (IV) in recycled PET (rPET). A lower IV can result in insufficient melt stability, non-uniform rheological properties, and poor performance in injection moulding, says Tom Inch, Market Manager for Thermoplastic Additives at BYK USA. In particular, in foam moulding, low IV can result in large voids, an uneven bubbled surface, and yellow discoloration. The additive increases the IV value through reactive compounding, which improves melt stability and foam structure.


CLICK ON THE LINKS FOR MORE INFORMATION: � www.siigroup.com � www.avient.com � www.4kenrich.com � www.basf.com � www.teamplasgroup.com � interfacepolymers.com � www.dow.com � www.sk-fp.com � www.ingeniapolymers.com � www.byk.com


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