NeoAdd™ PAX

The ultimate polymeric aziridine innovation



A breakthrough innovation for low-toxicity crosslinking

Across the coatings industry, crosslinkers are utilized to deliver high levels of strength, resistance, and durability required for the toughest applications – but these highly reactive crosslinkers often come with serious health risks that limit their use in specific applications. Until now, low-toxicity alternatives have struggled to achieve comparable performance. The solution? The Covestro breakthrough innovation NeoAdd™ PAX enables high-performance, low-toxicity crosslinking for waterborne systems – protecting both surfaces and society.

NeoAdd™ is a Covestro patent-pending technology.

NeoAdd™ PAX is not available worldwide yet.

(REACH and China compliant - TSCA & DSL pending).

Keeping people and planet safer

Building on our long tradition of innovating to meet industry needs, a dedicated team of our experts created NeoAdd™ PAX.

This game-changing polymeric aziridine product family has all the reactivity and performance of traditional aziridine crosslinkers, without the health risks that limit their use – keeping chemical handlers and future generations safe, eliminating toxic waste, and protecting our wider environment.

Half the labeling

The low-toxicity of NeoAdd™ PAX doesn’t just protect people’s health – it allows formulators, converters, and manufacturers to dramatically reduce the number of safety labels on their finished products compared with traditional aziridines.

Reducing these labeling requirements opens new high-performance possibilities for the coatings industry worldwide.

Performance you can rely on

Many low-toxicity crosslinkers fail to deliver the high functional performance consumers require. That’s not the case with NeoAdd™ PAX – it offers key functional performance advantages compared to most carbodiimide based waterborne coating systems such as better chemical resistance even at lower dosing levels. NeoAdd™ PAX achieves this high functional performance whether coatings are cured at room temperature or under stoving conditions, which is a shortcoming of carbodiimides. Additionally, our unique crosslinkers enable excellent water resistance as well as great scuff and abrasion resistance. For a coating you can rely on, NeoAdd™ PAX is the clear choice.

Want to discover for yourself? Request your free sample

NeoAdd™ PAX-521

Ideal for ink manufacturers and converters, NeoAdd™ PAX-521 is specially designed for use in water-based inks, lacquers, coatings and adhesives. It is non-genotoxic and non-mutagenic and is expected to be Swiss Ordinance approved*.

NeoAdd™ PAX-521 is supplied as an 80% solution in ethyl acetate for use in various inks and coatings to improve chemical resistance and mechanical properties as well as enhance adhesion.

NeoAdd™ PAX-523 

Developed for paint manufacturers, NeoAdd™ PAX-523 is specifically designed for use in waterborne industrial and architectural coating systems where superior performance is required. 

NeoAdd™ PAX-523 is supplied as an 80% solution in methoxy propyl acetate and can be used in a wide range of paints, floor coatings, plus leather and textile coatings to improve their chemical resistance and mechanical properties.

* Toxicological tests (Ames and Toxtracker) have proven that NeoAdd™ PAX-521 and NeoAdd™ PAX-523 are non-genotoxic alternatives to crosslinkers currently in use. These test results were used as a basis for our petition to the Swiss Authorities regarding the polymer(s) in this product. We are expecting a positive response from the Swiss Authorities prior to November 30, 2020.

Easy, efficient processing

But there’s 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 excellent pot life, thanks to high stability in water – driving processing efficiency, and saving money, time, and energy.

Turn down your ovens and turn up the performance.

Adhesion that sticks, whatever the substrate

A wide range of coating systems, from inks to packaging and flooring and even industrial OEM, can reliably benefit from the unique properties of NeoAdd™ PAX.

Our different crosslinkers deliver good adhesion to a range of substrates and are also excellent adhesion promotors when added to other coatings – outperforming traditional aziridines and carbodiimides.

If your coating is designed for industrial wood, metal, fabric, or leather, NeoAdd™ PAX has you covered, again and again.

Benefits of NeoAdd™ PAX

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

Low toxicity reduces labeling requirements

Excellent chemical and scratch resistance

Quick and efficient processing: crosslinks at room temperature; no need for stoving

Outstanding adhesion to wide range of substrates

Excellent potlife: up to 7 days depending on pH

REACH compliant √
TSCA & DSL pending China √

Could we help you solve your coating challenge?

No matter what the application, substrate or technology, there’s a good chance our team can help you.