The excellent odor adsorbing properties of our TEGO Sorb® range enable the effective control of odors evolving from recycled polymers.
When it comes to sustainability, there is no alternative to the recycling of plastics. Food packaging that is collected from households can emit odors even after the cleaning process and this rules out any further usage. The problem even affects non-mixed plastics, such as those originating from wastage from industrial production: Since the material is heated during the recycling process, undesirable characteristic odors from adhesives or polymer degradation can arise.
With its TEGO Sorb® additives brand, Evonik has developed a plant-based material that counteracts the development of odors even in low concentrations. The material works in accordance with the lock and key principle. Odors are not merely masked, instead TEGO Sorb® irreversibly binds the odor-causing molecules. This works best for nitrogen or sulfur-based odors. In many formulations, the addition of a minimal percentage by volume of TEGO Sorb® to the total mass is enough to achieve permanent improvement. This enables recycling manufacturers to use a higher percentage of recycled materials than ever before making their products more sustainable.
ODOR ADSORBING AGENTS:
- TEGO Sorb® PY 30 PE
TEGO Sorb® PY 30 PE is a masterbatch based on PE. Its malodour reducing function is based on two mechanisms: First, it contains zinc ricinoleate, which is working as an odour absorber according to the key and locker principle. Second, TEGO® Sorb PY 30 PE promotes the evaporation of smelling low molecular weight substances during processing.
- TEGO Sorb® PY 30 PP
TEGO Sorb® PY 30 PP is a masterbatch based on PP. Its malodour reducing function is based on two mechanisms: First, it contains zinc ricinoleate, which is working as an odour absorber according to the key and locker principle. Second, TEGO® Sorb PY 30 PP promotes the evaporation of smelling low molecular weight substances during processing.
- TEGO Sorb® PY 88 TQ
TEGO Sorb® PY 88 TQ is a zinc ricinoleate used as odor absorber with a key and locker principle; it is not working with a flavor principle.