Röhm launches PMMA for high-exposure outdoor environments
Last update on Mar 5, 2026
Röhm announces the launch of ACRYLITE® SunResist, a breakthrough in capstock technology and the first of its kind under the ACRYLITE® brand, Röhm's polymethyl methacrylate (PMMA) products in the Americas.
Engineered for manufacturers who demand durability, aesthetics, and efficiency, ACRYLITE® SunResist sets a new benchmark for outdoor applications including window construction, decking, outdoor furniture, façades, and recreational components that must perform and look exceptional in high‑exposure environments.
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Ultra‑thin co‑extruded protective layer that block harmful UV light
Outdoor products face relentless UV, temperature swings, and abrasion. ACRYLITE® SunResist is a PMMA molding compound that has been formulated to create ultra‑thin co‑extruded protective layer that block harmful UV light up to 400 nm. This helps preserve color and surface integrity, reducing fading and degradation over time. Beyond its inherent UV and weather resistance, ACRYLITE® SunResist is designed for superior weatherability, maintaining color and gloss even under prolonged sunlight and moisture. It is ideal for components that must retain a premium appearance season after season.
ACRYLITE® SunResist elevates finished parts with a premium surface quality that offers precise gloss management, surface hardness and abrasion resistance, as well as chemical resistance, enabling high end aesthetics without sacrificing robustness. Mechanical integrity is reinforced by high impact strength and heat stability, which help to prevent stress cracking, warping, or distortion at elevated temperatures.
For processors, ACRYLITE® SunResist was tuned for high flowability and a broad processing window. These attributes support smoother extrusion/co extrusion, help reduce scrap and improve overall productivity. ACRYLITE® SunResist demonstrates best in class adhesion to compatible substrates, designed to prevent brittle edges during cutting and to resist cap layer peeling. This is key for complex profiles, cut to size parts, and post fabrication operations.
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Key properties
UV and weather resistance: High UV absorbance up to 400 nm supports the product’s protective role against photodegradation and color shift.
Color fastness (Xenon Arc, ASTM G155 Cycle 1): Tests indicate a focus on minimizing perceptible color change over time in accelerated weathering, reinforcing the long term appearance goal for outdoor products.
Mechanical & thermal profile: Comparative framing highlights high flexural strength, notched Izod impact performance, and elevated heat deflection temperature, supporting resistance to bending, impact, and heat related deformation.
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“ACRYLITE® SunResist combines the trusted quality of our ACRYLITE® molding compounds with advanced material science,” said Tongzhai Gao, Product Development manager at Röhm. “It’s not just about protection – it’s about enabling manufacturers to deliver products that stay beautiful and strong for years, while improving production efficiency.”
With growing demand for durable, long lasting, and visually refined outdoor solutions, ACRYLITE® SunResist helps manufacturers meet performance expectations without sacrificing design flexibility or cost control. The material is designed for capstock compatibility across multiple substrates and seamless integration into existing extrusion and co extrusion lines, accelerating adoption with minimal disruption.