The world’s first food-contact-approved polymeric aziridine crosslinker

Food-contact approval and compliance

Building on our long tradition of innovating to meet printing and packaging market needs, we developed NeoAdd® PAX.

This game-changing polymeric aziridine product family has all the reactivity and performance of traditional aziridine crosslinkers, without the genotoxic and mutagenic toxicity issues that limit their use – keeping chemical handlers and future generations safer. 

The low toxicity of NeoAdd® PAX is now also acknowledged by national authorities, approving the product for listing in food-contact legislation. In fact, we have received a positive opinion letter from the Dutch, German, and Swiss authorities for listing in their official food legislation (Swiss Ordinance, Dutch Commodities Act, and German Printing Ink Ordinance), confirming that the product is safe even for direct food-contact packaging applications. 

Performance you can rely on

Low-toxicity crosslinkers tend to fail to deliver the high functional performance consumers require. That is not the case with NeoAdd® PAX – it offers key functional performance advantages compared to most carbodiimide-based waterborne coating systems, such as adhesion improvement and chemical resistance even at low dosing levels. NeoAdd® PAX achieves this high functional performance whether coatings are cured at room temperature or at elevated temperatures.

Additionally, our crosslinkers enable excellent water resistance, as well as great scuff and abrasion resistance.

The NeoAdd® PAX family comprises three distinct products: NeoAdd® PAX 521, NeoAdd® PAX 523, and NeoAdd® PAX 524. They provide similar performance boosts but are diluted in different solvents, resulting in varying compatibility levels for different formulations and end applications.

Adhesion that sticks, whatever the substrate

Our different NeoAdd® PAX crosslinkers are excellent adhesion promotors when added to coatings and inks – performing better than carbodiimides.

If your coating, ink, or overprint varnish is designed for plastic packaging films, paper packaging, labels, wood, metal, fabric, or leather, NeoAdd® PAX has you covered, again and again. 

Easy, efficient processing

But there is more. NeoAdd® PAX products are operational over a wide temperature range and can be cured at room temperature, so stoving curing ovens are not required.

They also have high stability in water – driving processing efficiency, and saving money, time, and energy.

Whether you’re a manufacturer looking for high processing efficiency with fewer usage limitations, or a consumer who wants safer, highly durable coatings, NeoAdd® PAX products are the no-compromise crosslinker for you. Their versatile range of benefits means that you can enjoy game-changing safety and performance standards across the value chain.