What is LEONA™?
LEONA™ is PA66 (polyamide 66 or nylon 66) resins. PA66 resins are engineering plastics featuring
excellent heat resistance and mechanical strength. PA66 is a crystalline thermoplatic resin.
ASAHI KASEI is an entirely in-house production for LEONA™, starting from intermediates to
finished products. Our fully in-house production process minimizes external
disruptions to reduce supply instability.
LEONA™ Standard grade Key Features
The core lineup of LEONA™ PA66 resins offers an extensive range of options tailored to specific needs: from standard formulations to glass-fiber (GF) reinforced,
low-warp and low-abrasion, impact-resistant, high-viscosity and fatigue-resistant, friction-friendly, heat-resistant, flame-retardant options, and more.
Heat Resistance
LEONA™ has a high melting point (265°C) in general-purpose engineering plastics and boasts excellent heat resistance.
Electrical Insulation
LEONA™ features excellent electrical insulation and tracking resistance. These properties are derived from the absence of benzene rings in the molecular structure.
Mechanical Properties
LEONA™ features excellent strength and rigidity. These properties are derived from the molecular structure of PA66 resins, which feature tightly interwoven polymer chains with hydrogen bonds acting between.
High Toughness & Impact Resistance
LEONA™ has high toughness and impact resistance derived from the molecular structure of PA66 resins, which allows them to exhibit water-absorption-induced plasticity.
Resistance to Oil & Organic Solvents
LEONA™ features excellent resistance to non-acid chemicals, organic solvents, lubricant oils, and similar substances.
Optional Fillers for Strength Reinforcement
LEONA™ has high intermolecular cohesion and does not become brittle even when compounded with fillers.
LEONA™ SN series Key Features
LEONA™ SN is the result of Asahi Kasei’s relentless pursuit of innovation. This revolutionary series utilizes non-halogen and red phosphorus free flame retardant, making it an eco-friendly and safe choice for your applications.
Exceptional Heat Resistance
Count on LEONA™ SN to maintain strength and stiffness even under wet conditions, ensuring reliable performance in challenging environments.
Enhanced Processability
Experience reduced mold deposit and metal corrosion, streamlining your production process and improving productivity.
Retained Physical Properties
Enjoy consistently reliable performance, even in conditioned states.
Impressive Surface Appearance
Elevate your products with a visually appealing finish.
Enhanced Productivity
Optimize your manufacturing process with reduced mold deposit compared to conventional alternatives.
Laser Marking Excellence
With impressive laser printability, LEONA™ SN empowers you with clearer laser marking on glossy surfaces, bringing your laser marking capabilities to new heights with wide range of process conditions.
Excellent Flammability Performance
In combination with flammable and electrical performance. UL 94 V 0, CTI 600V: Rest assured with top-tier flame retardancy and electrical performance.
LEONA™ SG series Key Features
As the newest member of the LEONA family, the LEONA SG grades are the epitome of excellence, combining outstanding processability, superior strength, stiffness, dimensional stability, and low water absorption. They come with additional features that elevate them as the ideal replacements for metal parts, all while reducing weight.
Lower Water Absorption
Reduced water absorption ensures the material’s performance over time.
Glossy Appearance
Achieve premium aesthetics with LEONA™ SG’s excellent surface appearance.
Higher Flowability & Easy Processing
Experience ease in manufacturing processes with LEONA™ SG’s higher flowability.
Better Dimensional Stability
Keep your parts in shape and form with LEONA™ SG’s superior dimensional stability, ensuring consistency and reliability.
Superior Strength, Stiffness, & Impact Resistance
Embrace robust and high-performing solutions with LEONA™ SG.
Higher Long-Term Creep Resistance
Count on LEONA™ SG to maintain its integrity even under prolonged stress, ensuring long-lasting performance.
Low Odor, VOC, & Fogging
The LEONA™ SG series can be used for automobile interiors due to low odor, VOC, and fogging applications. For example, it meets the VW standards.








