COMPATIBILISERS | ADDITIVES


Compatibilised PET/PE shows improvements in impact strength and elongation at break


Source: SK Functional Polymer


Compatibilised PA 6/PE shows improvements in impact strength and elongation at break


Functional Polymers help disperse contaminants (such as PE in a matrix of PA or PA in a matrix of PE) and improve interfacial adhesion. In recycled polyesters (eg PET, PBT), Dow’s Elvaloy copolymers and Elvaloy AC acrylate copolymers act to compatibilise contaminants. For example, in PET-PE tray waste, Elvaloy PTW acts as a coupling agent and a compatibiliser for PE in PET that allows the PET to be used to make fibres; without the additive, the blend could not be processed at higher draw ratios, the company said. Dow now also offers versions of its


Fusabond, Elvaloy, and Elovaloy AC polymers with content made from recycled materials (CIR) or versions with bio-circular content made from


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Source: SK Functional Polymer


bio-circular residues (REN). Both CIR and REN options use the mass balance approach and are ISCC Plus certified. Both are of interest to the automotive industry, for example. “There is a growing focus – both by the public and regulators – on the sustainability of the materials used in cars. This drive for circular, low-carbon automotive plastics is reinforced by ambitious targets set by OEMs, including the amount of recycled and bio content that cars must contain,” the company said. Clariant said its advanced wax additives are being used to compati- bilise mixed streams of PE and PP PCR. “Licocene PP 1602, Licocene PP 2602 or Licocene PP 3602 can improve the poor adherence between


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