Chiguard® W-5491 High-Performance Water-Based UV Stabilizer — A Game-Changing Upgrade for Outdoor Wo ∣ Chitec Technology Co., Ltd.

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home news (Products) Chiguard® W-5491 High-Performance Water-Based UV Stabilizer — A Game-Changing Upgrade for Outdoor Wo
Chiguard® W-5491 High-Performance Water-Based UV Stabilizer — A Game-Changing Upgrade for Outdoor Wo

Chiguard® W-5491

High-Efficiency Waterborne UV Stabilizer — Advanced Protection for Wood Coatings

Chitec introduces Chiguard® W-5491, a high-performance UV stabilizer specifically designed for exterior wood coatings. Utilizing red-shifted UV absorption technology, it effectively blocks high-energy UV rays and slows down photodegradation in wood substrates. With a simplified formulation, W-5491 delivers enhanced and long-lasting protection—extending color retention and improving weather resistance for water-based exterior wood coatings.

Key Benefits

  • Single-component high efficiency—no need for HALS
  • Passed 1152-hour xenon lamp aging test, ΔE only 9.57
  • Ultra-low emulsifier content – minimizes foaming issues during application
  • Solvent-free and co-solvent-free – process-friendly
  • No negative impact on coating flow properties
  • Red-shifted UV absorption – upgraded weatherability for outdoor wood

Recommended Applications

  • Outdoor Wood Coatings | Boardwalks, Outdoor Furniture, Architectural Wood Siding
  • High-End Waterborne Wood Systems | Suitable for both transparent and semi-transparent finishes
  • Weather-Resistant and Eco-Friendly Projects | Balancing performance and sustainability

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About Chitec

Chitec was founded in 1998 by Dr. Chris Chiu and is headquartered in Taipei, Taiwan, with branch offices in Houston, USA, and Shanghai, China. Chitec has authorized over 20 sales distributors worldwide, spanning five continents. The company operates two manufacturing plants, both located in Taiwan, with one in Hsinchu and the other in Changhua.

Chitec specializes in the research and development of high-performance chemical additives for various industries, including electronics, automotive, aerospace, construction, packaging, and synthetic fibers. Over the years, Chitec has steadily built up its major product lines, which include UV stabilizers, antioxidants, photoinitiators, and flame retardants.

Chitec focuses on the R&D of specialty chemical additives for various industries, including electronics, automotive, aerospace, construction, packaging, and synthetic fibers. During this time, Chitec has steadily built up its major product lines, including UV stabilizers, Antioxidants, Photoinitiators, and Flame retardants.

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