Chiguard® 5400: Enhanced Surface Durability｜Upgrading Coating Systems with Liquid HPT UV Absorber
Ultraviolet (UV) radiation can be far more damaging than we imagine. Prolonged exposure accelerates the aging of coatings, plastics, and wood—causing fading, loss of gloss, cracking, and even structural damage. This not only affects appearance but also significantly shortens the product’s lifespan.
So, how can we effectively address this issue—extending material durability while reducing maintenance costs?
Chiguard® 5400 is a liquid hydroxyphenyl triazine (HPT) UV absorber designed to meet the high-performance and durability needs of solvent-based and 100% solids coatings, such as those used in automotive and industrial applications. With low initial color and excellent stability, it’s the ideal choice for coatings that require both strong protection and visual clarity.
Why Do Formulators Worldwide Choose Chiguard® 5400?
1. Combats UV-Induced Aging and Degradation to Extend Lifespan
Long-term UV exposure leads to fading, gloss loss, and cracking—compromising appearance and durability. These effects are especially noticeable in architectural coatings and automotive finishes.
Chiguard® 5400 provides outstanding UV absorption, particularly in the 290–320 nm range, with strong performance in UV-B protection. Test data shows that as concentration increases, transmittance significantly decreases—demonstrating its ability to effectively filter UV light and reduce photo-degradation.
It also offers excellent thermal stability, making it well-suited for high-temperature curing processes. Even under harsh conditions, it continues to protect the coating, helping maintain structural integrity and visual appeal over time.
2. Delivers Long-Lasting Protection During High-Temperature Curing
Many UV absorbers lose effectiveness during high-temperature curing due to volatility or poor thermal stability. Chiguard® 5400 stands out with its excellent heat resistance.
Its low vapor pressure (10 mbar at 25°C) makes it less likely to evaporate at elevated temperatures, preserving UV protection throughout the curing process.
With a density of 1.06 g/cm³ and a tightly bonded molecular structure, it remains stable even under extreme heat, resisting decomposition or distortion and ensuring lasting performance.
3. Preserves Coating Transparency and Gloss
UV absorbers with dark color or high migration tendencies can negatively affect coating appearance. In high-clarity or light-colored systems, this may result in haziness, uneven color, or loss of gloss—compromising the product’s overall finish.
Chiguard® 5400 features both low color and low migration, helping maintain the original appearance of the coating. It’s especially suitable for light-toned and transparent formulations that demand visual clarity and consistency.
4. Simplifies Formulation and Improves Manufacturing Efficiency
Incompatible additives often require high-shear mixing to ensure uniform dispersion—a process that adds cost and can stress heat-sensitive ingredients.
As a liquid, Chiguard® 5400 offers excellent compatibility across various formulations. It blends easily without the need for additional solvents or high-shear equipment, streamlining production and lowering costs.
During curing, many systems use metal catalysts to accelerate chemical reactions. Some additives may interfere, affecting stability or performance. However, Chiguard® 5400 has been tested to ensure compatibility—it doesn’t negatively interact with metal catalysts and maintains its UV-absorbing function.
It also works well with amine crosslinkers, commonly used to enhance coating durability and weather resistance, without triggering side reactions or affecting coating performance—making it a reliable choice for high-performance systems.
Recommended Applications for Chiguard® 5400
Applications
• OEM Automotive Coatings
• Wind Power Coatings
• Industrial Coatings
• Marine Coatings
• UV-Cured Coatings
• Exterior Wall and Roof Coatings
• Construction Adhesives and Sealants
Learn More
Want to explore how Chiguard® 5400 performs across various coating systems?
Reach out to our sales team for professional consultation and technical support:
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