UV Absorber UV-531

Product Overview

UV Absorber UV-531 is a high-performance benzophenone-type ultraviolet stabilizer designed to protect polymers and coatings from photodegradation. By effectively absorbing harmful UV radiation in the 240 to 340 nanometer range, this additive prevents the breakdown of molecular chains caused by sunlight exposure. It is engineered to provide maximum protection for various polymer matrices while maintaining optical clarity and minimizing color shift during processing and service life.

As a critical component in modern material science, UV-531 offers a balanced profile of thermal stability and low volatility. Its chemical structure ensures minimal migration out of the substrate, guaranteeing long-term durability for outdoor applications. This product serves as an essential solution for manufacturers seeking to enhance the weatherability of their final products without compromising on processing efficiency or safety standards.

Key Performance Features

Our UV Absorber UV-531 is distinguished by several technical advantages that make it a preferred choice for demanding industrial formulations. The additive exhibits excellent compatibility with a wide range of resins, ensuring uniform dispersion throughout the material. Key benefits include:

• Superior UV absorption capacity across the critical 240-340nm spectrum.
• Low volatility and minimal migration, ensuring sustained protection over time.
• Excellent solubility in high-solid coatings and compatibility with hindered amine light stabilizers (HALS).
• Light color profile and non-toxic characteristics, suitable for sensitive applications.
• Synergistic effects when used alongside benzotriazole UV absorbers for enhanced stabilization.

Industrial Applications

This versatile stabilizer is widely utilized across multiple sectors due to its robust performance profile. It is particularly effective in polyolefins such as polyethylene (PE) and polypropylene (PP), where it prevents yellowing and physical property loss. In the coatings industry, UV-531 is indispensable for automotive refinishing paints, powder coatings, and industrial finishes based on polyurethane, acrylic, or epoxy systems. Additionally, it is extensively used in PVC, polystyrene (PS), polycarbonate (PC), and ethylene vinyl acetate (EVA) formulations. The recommended dosage typically ranges from 0.1% to 0.5%, depending on the specific substrate and exposure conditions.

Technical Specifications

Quality control is paramount in our manufacturing process. Each batch undergoes rigorous testing to ensure compliance with international standards. The following table outlines the key physical and chemical parameters:

Packaging and Storage

To maintain product integrity, UV Absorber UV-531 is packed in cardboard drums lined with plastic bags, with a net weight of 25kg per drum. The product demonstrates good storage stability under recommended conditions. It should be stored in a cool, dry, and well-ventilated area, protected from direct sunlight and moisture. Avoid exposure to high temperatures during transportation and warehousing to prevent clumping or degradation. As a non-dangerous good, it can be handled using standard industrial safety protocols. We provide comprehensive documentation, including Certificates of Analysis (COA) and technical data sheets, to support your quality assurance requirements.