Frequently Asked Questions

PREXELENT^® has been tested extensively by esteemed research laboratories, including VTT Technical Research Centre of Finland, Jyväskylä University, and Helsinki University. Tests were performed with methicillin-resistant Staphylococcus aureus (MRSA), SARS-CoV-2 coronavirus and other bacteria, molds, and yeast.

This depends on the product and how it is used. The active agent migrates to the material's surface in a controlled manner according to the application's needs, varying from weeks to years. In usage, the rosin removed from the surface is replaced by new rosin from inside the product as long as the rosin stocks last. The duration depends on how often the rosin is moved from the surface (by e.g., touching, cleaning, and changes in humidity).

Antimicrobial plastics have been tested and developed for years, however, most of the solutions are based on coating the plastic. In PREXELENT^®, the active agent migrates to the material’s surface at a chemically controlled rate. PREXELENT^® is based on pine rosin with well-known antimicrobial properties. It is a green choice, which does not bioaccumulate or pollute waters at the end of its lifecycle.  PREXELENT^® is also measurably faster in killing certain microbes than other materials available.

PREXELENT^®'s efficacy has been certified in the following studies:  Antimicrobial according to ISO 22196:2011 at VTT Technology Research Centre of Finland, Antiviral properties using human coronavirus at Jyväskylä University, Finland, Antiviral properties using SARS-CoV-2 at Helsinki University, Finland, and ISO 10993-10:2010 - Tests for irritation and skin sensitization.

PREXELENT^®'s non-toxic active agent is based on pine tree rosin, which has been used in medical practice since antiquity. A small part of the population (about 1–2%) is allergic to rosin (colophony allergy). PREXELENT^® as such (pine tree rosin) has been allergy tested (ISO 10993-10:2010 Tests for irritation and skin sensitization) and not classified as an allergen, as the amount of pine tree rosin migrating to the surface is minimal. Still, people with colophony allergy should be careful when in contact with PREXELENT^®.

PREXELENT^® technology can be used in products containing certain plastic types (polymers). We know the technology can be applied, for example, to PE, PP, PA, as well as several other polymers currently undergoing testing. Plastic can be in the form of thin films, molded plastic objects, fibers, and textiles.

No.

PREXELENT^® is a technology we sell to be used in different products. We do not sell end products, we sell the right to use the technology and polymer compounds or master batches containing rosin and the PREXELENT^® technology.

All cases are specific. The compound’s price is affected by polymer type used, percentage of rosin added to the polymer, format of the product (sheet, film, molded plastic), whether the compound is supplied as a concentrate or granulates, etc.

We are not building a network of distributors and wholesalers, as we are selling technology, not a ready-to-use product. The end products are tailored solutions, including R&D support from Premix to develop the product and ensure it performs to the specifications.

No. PREXELENT^® technology is about knowing how the get the storage of the active ingredient inside the plastic.