Increase the molecar weight with Compovate chain extenders
Compovate produces chain extenders that are used to increase the molecular weight of polymer chains and boost performance. We offer two grades: one for PET or PET-based blends and one for PLA or biopolymer blends. Both are available in dust-free, granular form.
Chain extenders can be used in almost all plastic converting techniques such as injection moulding, blow moulding, filament, pipe, tape, profile, sheet extrusion, 3D printing. In blends, chain extenders act as compatibilizer, stabilizing the blend, improving processability and enhancing material performance.
Compovate chain extenders in biocomposites
Biocomposites that are partly PLA-biopolymer based and contain natural, plant-based fibres or fillers, like wood, hemp, flax, jute, sisal, abaca, bamboo, cellulose, and others, benefit greatly from the use of Compovate chain extenders. This is because the chain extenders also react with the hydroxyl (OH-) groups present in virtually all plant-based natural fibres or
fillers. So, when compounded or blended, there is not only a mechanical connection between the polymers and the natural fibres or fillers, that forms during the high pressure melt phase, chemical bonds are also formed. That results in higher performance, lower moisture uptake, longer lifetime and a wider processing window.
Compovate chain extenders in recycling
Recycled materials are often associated with lower performance than virgin materials. Not anymore! Recycled PLA and PET can now be “repaired” and restored to a state that closely resembles virgin material by using the Compovate chain extenders. Due to mechanical damage and hydrolysis due to the presence of moisture, PLA and PET recycling can be a challenge. Adding Compovate chain extender can help restore these properties and bring back much of the original prime strength and toughness to the polymer. Influence of foreign contamination like other polymers or even solids, cannot, of course, be corrected, but even these components can be compatibilized, to some extent.
Working principle of Compovate chain extenders
Applications of chain extenders
The Compovate portfolio consists of a range of multiple sustainable products, suitable for applications including high tensile strength packaging tape, single-use plastics alternatives, PET sheet extrusion and PLA blown film applications.
