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As the coatings industry continues to evolve, formulators face growing expectations to deliver products that meet performance demands while aligning with tightening environmental and regulatory standards. One area under particular focus is the use of tin catalysts, which have provided the efficiency and reactivity needed in polyurethane coatings but are undergoing increased environmental and regulatory scrutiny and may require additional labeling.  

Recognizing the need for a high-performing alternative, Borchers: A Milliken Brand developed Borchi^® Kat 2115, a next-generation tin-free catalyst designed to help formulators transition away from tin systems with confidence.

 

This innovation offers optimal reactivity and process reliability while delivering improved compliance and application control. 

 

 

Improving Regulatory Compliance with Tin-Free Solutions 

In polyurethane coatings, catalysts are essential to achieving the right balance between drying speed, hardness, and pot life. Tin-based catalysts like dibutyltin dilaurate (DBTDL) have historically offered strong performance in these areas, but at the cost of environmental and regulatory challenges.  In the European Union, under REACH and CLP Regulations, appropriate labeling is required in products containing more than 0.1% of DBTDL. 

Bismuth octoate has been a traditional catalyst replacement for tin, but this also faces regulatory challenges since belonging to the 2-ethylhexanoic acid (2EH) salts substance group. 2-ethylhexanoic acid (2EH) and its salts received a mandatory minimum classification as a Reproductive toxicant in Europe mandating proper labeling in products containing these compounds. 

Borchi^® Kat 2115 was engineered to close the gap in reactivity of DBTDL and bismuth octoate catalysts while addressing these regulatory concerns. As an advanced neodecanoate metal combination, this next generation catalyst can accelerate reactivity in one- and two-component polyurethane systems and RTV silicones, ensuring a fast, reliable cure and durable final film. 

For formulators navigating strict global regulations, this means easier alignment with REACH and other regional requirements while achieving optimal performance. 

 

Performance That Stands Apart 

Through extensive internal testing, Borchi^® Kat 2115 has demonstrated performance comparable to or exceeding traditional catalysts across multiple systems for direct-to-metal, protective and marine, and vehicle refinish applications. 

 

Compared to traditional DBTDL and bismuth catalysts, Borchi^® Kat 2115 offers: 

 

• Optimal drying times for production efficiency 

 

 

• Longer pot life for better application control and reduced waste 

 

• Better hardness and film durability for long-term performance 

 

 

• Additional performance benefits include: 
  • Good corrosion resistance in demanding environments 
  • Stable gloss and color retention, reducing yellowing over time and ensuring the ability to achieve high gloss finishes 
  • This optimized balance of speed and stability makes it easier for formulators to adopt a tin-free and 2EH-free system without sacrificing durability or performance. 

 

 

 

Trusted Expertise, Proven Results 

Our deep understanding of catalyst chemistry and history of developing high-performance additives for polyurethane coatings allow Borchers’ experts to support customers from concept to commercialization. Whether optimizing formulations for efficiency, durability, or compliance, our team partners with formulators to ensure consistent, scalable results. 

With Borchi^® Kat 2115, we continue to advance the future of catalyst design, helping coating manufacturers achieve both regulatory readiness and reliable performance. 

 

Experience the Difference 

Borchi^® Kat 2115 represents the next evolution in tin-free catalyst technology, delivering fast reactivity and stable performance. By combining proven reactivity with improved compliance and control, it empowers formulators to move confidently toward a future of improved efficiency and compliance in polyurethane coatings. 

 

Ready to explore the possibilities of a next-generation tin-free catalyst for polyurethane systems? 

Order a sample today and partner with us to bring your next formulation to life with Borchi^® Kat 2115.