SK Functional Polymer (SKFP) has developed solutions for the compatibilization and impact modifications of rPET/PE and rPET/PP.
Despite advances in separation technology, contamination of PET streams with PE and PP is very common. SKFP Lotader AX reactive terpolymers help to compatibilize PET and PE or PP resins during a compounding stage. This results in improved impact resistance of the final compounds (see graph below). In PET/PE, a strong increase of the elongation at break was noticed. This allows reducing the need for sorting the recycled feedstocks. They give manufacturers the possibility of cost reduction due to increased recycled content and access to low-cost sources. New products such as pipes, films, plastic pallets and monofilaments made of recycled PET/PE and recycled PET/PP alloys using Lotader® AX8840 & Lotader® AX8900 compatibilizers have already been commercialized.
Lotader ® AX8840 & Lotader® AX8900 are respectively highly reactive ethylene – glycidyl methacrylate copolymer and ethylene – methyl acrylate – glycidyl methacrylate terpolymer with high acrylate content.