Henkel Adhesive Technologies is introducing a new generation of its Darex COV sealants. The formulations do not contain phthalate-based plasticizers and ensure the reliable sealing of metal packaging with improved health and environmental credentials. With this step, Henkel is setting standards in the early elimination of harmful ingredients in industrial adhesives and sealants.
The phthalate-free PVC-based compounds will gradually replace existing products and provide users with a future-proof solution that complies with current and future regulations.
As potential endocrine disruptors, phthalates have been the focus of scientific and regulatory attention for years. Certain types such as DEHP, DBP and BBP have already been classified as toxic to reproduction and are banned in various applications, including toys and cosmetics. The European Commission has also listed several similar substances in the SVHC (substances of very high concern) category. With this in mind, Henkel took the early decision to switch to phthalate-free (NI) formulations.
A key focus of development was the formulation of a one-component sealant system that is suitable for nozzle application, offering stable viscosity, high resistance to solvents, ketones and oils, and thermal stability. Darex COV 73 not only does not contain phthalates, but it also avoids the use of ingredients that are classified as carcinogenic, mutagenic or toxic to reproduction (CMR). Moreover, the phthalate-free formulation makes it possible to reduce the curing. Darex COV 73 was successfully developed to market maturity in a pilot project with Emballator. The Swedish manufacturer of metal packaging switched several of its facilities to the new phthalate-free formulation in 2024.
