Car side mirrors, radiator grilles, window frames and furniture surfaces. These are products we often see in everyday life, yet they are constantly exposed to outdoor conditions such as sunlight, rain, humidity and dust.

So, how can they maintain their color and shape relatively well over time? Behind this durability is materials technology that helps protect both the appearance and performance of products.

Today, we take a closer look at ASA, or Acrylonitrile Styrene Acrylate, a high-performance plastic used in many products around us, from automotive exterior parts and window frames to decorative sheets for furniture.

What Kind of Material Is ASA?

ASA, short for Acrylonitrile Styrene Acrylate, is a copolymer that combines the properties of acrylonitrile, styrene and acrylic rubber. In simple terms, it is a high-performance plastic material designed to deliver the properties needed by combining the strengths of different materials.

One of ASA’s key characteristics is that it retains many of the advantages of ABS, or Acrylonitrile Butadiene Styrene, while delivering stronger performance in outdoor environments. ABS is widely used in various fields, including automobiles, home appliances and IT devices, thanks to its heat resistance, impact resistance, excellent processability and color expression. However, when exposed to ultraviolet (UV) light, humidity or chemicals for long periods of time, ABS may discolor or crack.

ASA, on the other hand, shows relatively little change in physical properties and appearance even when used outdoors for extended periods. Its color does not fade easily under strong sunlight, and it can remain stable even in conditions such as rain and humidity.

Thanks to these characteristics, ASA is widely used in products designed for long-term outdoor use.

Weatherability: The Power to Withstand Sunlight and Rain

When discussing ASA, one characteristic stands out: weatherability. Weatherability refers to the ability of a material to withstand external environmental factors such as sunlight, heat, humidity and air while maintaining its original performance.

The performance required of plastics depends on where they are used. Unlike products mainly used indoors, outdoor products are continuously affected by ultraviolet (UV) light, large temperature differences, high humidity and pollutants. If the material easily discolors or cracks in this process, it can affect not only appearance, but also quality and lifespan.

For this reason, plastics used outdoors need more than light weight and easy processability. They also need weatherability, which allows them to maintain their physical properties and appearance over time. ASA is a representative weather-resistant plastic that meets these requirements and is used across a wide range of industries.

From Cars to Decorative Sheets: Where ASA Is Used

One of the fields where ASA is most widely used is automotive exterior parts. Side mirror housings and radiator grilles help complete the design of a vehicle while being continuously exposed to sunlight, rain and pollutants.

These parts require materials that can maintain a clean appearance over time while also withstanding impact and chemicals. ASA is well suited for automotive exterior parts because it offers not only weatherability but also impact resistance and chemical resistance. In particular, for highly visible parts such as side mirrors and radiator grilles, where gloss and color retention are important, ASA’s advantages become even more noticeable.

ASA is also widely used in building materials and decorative sheets for furniture. For parts that come into direct contact with the outdoor environment, such as window frames, materials are needed that resist deformation and discoloration over time. Decorative sheets used to finish furniture surfaces also play a role in enhancing product quality by expressing a wide range of colors and textures, including wood, metal and leather, while helping reduce scratches and stains.

In this way, ASA is used across various fields, from automotive exterior materials and building materials to furniture surface materials, helping improve both product durability and design quality.

LG Chem’s Expanding ASA Technology

Based on the strengths of ASA, LG Chem is developing a range of products and technologies tailored to the needs of different industries.

In the field of automotive exterior materials, LG Chem supports excellent gloss and appearance quality without a separate painting process through high-gloss, high-heat-resistant ASA. When applied to highly visible parts such as side mirrors and radiator grilles, it helps reduce discoloration and degradation based on strong weatherability, contributing to a premium appearance that lasts.

In the furniture and building materials sectors, BCB ASA is also gaining attention in line with the growing focus on sustainability. BCB, or Bio-Circular Balanced, ASA is a material that helps reduce carbon emissions by using a portion of plant-based bio feedstock. Because it maintains the physical properties and color expression of conventional ASA while incorporating bio-based feedstock, it is increasingly being used in eco-friendly molded materials and decorative sheets for furniture.

In this way, LG Chem’s ASA technology is expanding beyond automotive exterior materials into everyday products around us, including window frames and furniture surface materials.

The quality of a product is not determined by visible design alone. Colors and surfaces that do not change easily over time, as well as durability that remains stable across various environments, are also important competitive factors.

Although it may not always be visible, materials technology plays an essential role behind products that last in everyday life. Through ASA technology, LG Chem is helping enhance the value of the everyday products around us.

Learn more about ASA 👉 https://www.lgchem.com/product-detail/asa

※Some images in this content were generated using AI.