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We are proud to announce the release of our brand-new Sustainability Report, reflecting our commitment to responsible business practices and a sustainable future. This comprehensive report provides insights into our environmental, social, and governance initiatives and outlines the progress we have made toward our long-term sustainability goals.

Transparency and accountability are at the heart of our approach. By continuously reducing our environmental footprint and fostering ethical partnerships, we aim to deliver value not only to our customers but also to society and the environment.

Explore the full Sustainability Report now and learn how we are shaping a greener tomorrow

A new clinical study shows that HAIRVIVINE^®-PRO can deliver notable performance even in short contact applications such as shampoos. Powered by bioactive pumpkin seed extract (Cucurbita pepo), the active supports visible improvements in hair density, helps reduce hair shedding, and contributes to a balanced hair cycle.

These findings highlight the strong performance potential of rinse-off formulations making everyday cleansing compatible with clinically demonstrated benefits.

Discover the study here

We are excited to announce the launch of GENOMER* 4236, a next generation difunctional aliphatic urethane acrylate designed to deliver exceptional performance across a wide range of radiation curable applications.

Crafted for formulators seeking flexibility, durability, and reliable adhesion, GENOMER* 4236 sets a new benchmark for high performance coatings and inks.

Why GENOMER* 4236 stands out

• Excellent outdoor resistance – formulated to withstand demanding environmental exposure, making it ideal for long lasting topcoats.
• Outstanding flexibility – achieve smooth, crack free results - even on challenging substrates or bending applications.
• Good adhesion, especially on metal – GENOMER* 4236 enhances adhesion performance and enables low T bend values in coil coating systems when combined with flexible monomers.
• Low yellowing – Maintains color and gloss for pigmented and clearcoat systems.
• High impact resistance – perfect for applications where mechanical strength and durability matter.

Key Technical Highlights

• Functionality: 2
• Viscosity (60 °C): ~18,000 mPa·s
• Color Index: ~50 APHA
• Tg: 24 °C
• Shore Hardness: D78
• Elongation at Break: 30%

These mechanical and optical characteristics make it a versatile building block for UV curable high end formulations.

The perfect balance of toughness and flexibility.
Introducing our tin-free, difunctional urethane methacrylate oligomer, designed for free-radical curable formulations. Or to simply quote our 3D Printing Specialist Aymeric Champion, 'The GOAT - The Greatest Of All Time.'  

• 3D Printing – robust, thermoplastic-like parts
• Dental Applications – low water uptake, precision performance
• Optically Clear Coatings – minimal yellowing
• Adhesives – improved adhesion

Key Facts

• Glass Transition (Tg): 35°C
• Elongation: 36% 
• Shore Hardness: D41 / A93 
• Low shrinkage & excellent rebound properties

Added Value:

• Flexibilizes hard systems without compromising HDT
• High impact resistance and toughness
• Perfect for tough industrial parts in 3D printing

The foundation of high-performance energy-curing formulations lies in the smart selection of key components - oligomers, monomers, and photoinitiators. Among these, oligomers are the true game-changers, defining critical properties such as cure speed, film formation, flexibility, hardness, adhesion, and chemical resistance.

At RAHN, we’ve taken a deep dive into oligomer performance with our updated Oligomer Screening Lab Report. This comprehensive study benchmarks a wide range of oligomer types under consistent conditions, providing formulators with clear, reproducible insights into how each oligomer influences UV/EB/LED formulations across applications like coatings, inks, adhesives, 3D printing, and composites.

What’s Inside the Report?
Our screening approach evaluates key properties side by side:

• Reactivity – Cure speed under UV conditions
• Hardness & Flexibility – Balancing rigidity and elasticity
• Chemical Resistance – Durability against solvents
• Yellowing & Outdoor Durability – Long-term stability
• Viscosity – Processing and formulation ease

Key Highlights for Formulators

• GENOMER* 2263 & 2252 – Top performers for reactivity and hardness, ideal for scratch-resistant coatings.
• GENOMER* 4302 – Combines fast cure, hardness, and outdoor durability, perfect for demanding environments.
• GENOMER* 2253 – Delivers fast cure with flexibility, a rare combination for label inks and flexible coatings.
• GENOMER* 4281 – Strikes an exceptional balance between hardness and flexibility, reducing brittleness risks.
• GENOMER* 3414 – Low TG, but high reactivity and flexibility.

Our data-driven insights help you avoid common pitfalls like brittleness, yellowing, or poor surface cure - empowering you to tailor formulations for speed, durability, or flexibility.

Why This Matters
Not all urethane acrylates are soft and flexible. Not all epoxy acrylates are hard and brittle. Every oligomer has its own unique performance profile – and understanding these differences is the key to smarter formulations.