COMPATIBILISERS | MATERIALS
“EcoForte is very well positioned to process waste streams into new raw materials, based on Yparex compatibilising knowledge,” says Huijnen. The Compound Company now has capacity of
around 60,000 tonnes per year for all products. “In addition to the big volume manufacturers, there is a need for smaller, more flexible, more customised and more co-development type compounders, and this is exactly where we position ourselves,” says Commercial Director Wouter van den Berg. In Turkey, Tisan Engineering Plastics launched its Olebond line of maleic anhydride grafted PP, PE, EVA and ABS materials some three years ago. Applications include use not only as a compatibi- liser in recyclate, but also as coupling agent, impact modifier and adhesive agent in various markets. “PP-based Olebond grades are used especially in PP compounds as a coupling agent between polymer and fillers,” says Binnaz Coşkunkan, R&D Executive at Tisan. “PE grades are divided into two groups: one of them is used as compatabilizer in different processes such as halogen-free cable compounds, multilayer pipes, co-extrusion, composite panels and PE blends with other polymers: other PE-based grades are impact modifiers for polyamides even at low temperature. ABS and EVA-based grades can be used as compatibilisers in different products. “Olebond grades are used in recycled polyam- ide compounds to increase impact strength and dimensional stability by decreasing the effect of hygroscopicity and [improving] compatibility with polyethylene and polypropylene. Adding 3-10% Olebond increases the mechanical properties but the optimum usage level should be defined by the requirements of the end product.” In Denmark, Nordic Grafting Company (NGC) was founded almost five years ago as a wholly- owned affiliate of Bjørn Thorsen group (BTG). The company is utilising ExxonMobil’s patented Vistamaxx performance polymers technologies,
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Left: NGC’s Acti-Tech compatibiliser has a high grafted monomer content
under global licence granted to BTG, to develop and directly commercialise superior compatibilis- ers. ExxonMobill describes Vistamaxx as semi-crys- talline copolymers with tunable amorphous content; they are compatible with other polyolefin- ic materials. NGC’s Acti-Tech compatibiliser “is an ideal solution to compatibilise mixed polymers from PIR or PCR, enabling the use of these recycled plastics into existing products without lowering end-prop- erties,” says Quentin Le Piouff, Market Develop- ment Manager. It features a high grafted monomer content, low VOC content, an MFI adjusted for optimal dispersion, and high flexibility. Grades can also be used as impact modifiers in stiff polar engineering thermoplastics, coupling agents for compounds containing natural fibres, and flexible adhesion promoters on metal and polar substrates. “Acti-Tech compatibiliser 16MA13 has shown
improved dispersion and decreased domain size of polyolefin particles in a polyester or a polyamide matrix,” says Le Piouff. “Moreover, addition of 5% in recycled barrier film demonstrates a high recovery of film and optical properties compared to non- compatibilised mixtures, as well as a cost saving
IMAGE: NGC
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