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UV Absorber UV-531 | High-Performance Ultraviolet Absorber for Plastics and Coatings
Product Overview
UV Absorber UV-531 is a benzophenone-based ultraviolet absorber designed to help protect polymer materials and coating systems from UV-induced degradation.UV-531 is widely used as a light stabilizer in plastics, rubber, paints, and industrial coatings. Its ability to absorb ultraviolet radiation helps reduce discoloration, yellowing, cracking, and the deterioration of material properties caused by prolonged UV exposure.
Key Features and Benefits of UV-531
UV Absorber UV-531 is valued for its versatile performance in a wide range of polymer and coating formulations.
1.Effective UV absorption: Helps reduce UV-induced degradation by absorbing ultraviolet radiation and dissipating the absorbed energy.
2.Good compatibility: Suitable for various polymer systems, including polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), and polycarbonate (PC), subject to formulation requirements.
3.Low volatility: Helps minimize additive loss during processing and service under suitable operating conditions.
4.Low migration tendency: Supports the retention of UV protection within compatible polymer matrices.
5.Improved color stability: Helps delay yellowing and preserve the original appearance of plastics and coatings exposed to sunlight.
6.Flexible formulation options: Can be incorporated into different industrial formulations and combined with other stabilizers when technically appropriate.
Technical Specifications
Item | Unit | Index |
Appearance |
| yellowish crystalline powder |
Content | % | 99.0min |
Melting Point | °C | 47-49 |
Loss on drying(55±2°C) | % | 0.5max |
Content of Ash | % | 0.1max |
Light Transmittance(450nm) | % | 90min |
Light Transmittance(500nm) | % | 95min |
Chemical Name |
| 2-Hydroxy-4-n-octoxybenzophenone |
CAS Number |
| 1843-05-6 |
Molecular Formula |
| C21H26O3 |
Applications of UV Absorber UV-531
WSD Chemical's UV-531 is suitable for consideration in a variety of industrial applications, depending on the material composition, processing conditions, and required performance.
1. Plastics and Polymer Products
UV-531 is commonly used in PE, PP, PVC, PS, PC, EVA, and other compatible polymer systems. It can help protect plastic films, molded components, profiles, sheets, and other polymer products against UV-related discoloration and physical deterioration.
2. Paints and Industrial Coatings
In suitable coating formulations, UV Absorber UV-531 helps improve light stability and maintain appearance during exposure to sunlight. Potential applications include automotive refinish coatings, industrial paints, powder coatings, acrylic coatings, and other compatible coating systems.
3. Rubber Products
UV-531 can be considered for rubber formulations that require additional protection against UV-induced aging. Its suitability depends on the rubber type, compounding ingredients, processing conditions, and end-use environment.
4. Polyurethane, Acrylic, and Epoxy Systems
UV-531 may also be used in compatible polyurethane, acrylic, epoxy, and other resin-based formulations to help reduce UV-related degradation and maintain material appearance.
Recommended Usage and Formulation Considerations
The appropriate dosage of UV Absorber UV-531 depends on the polymer or resin system, product thickness, processing temperature, expected UV exposure, and required service life. A preliminary dosage range of 0.1%–0.5% by weight is commonly referenced for certain polymer applications, but it should not be treated as a universal recommendation.
Packaging, Storage, and Shelf life
Packaging :25kg/drum
Storage:should be stored in a tightly sealed original container in a cool, dry, well-ventilated place.
Shelf life:12months
Frequently Asked Questions(FAQ)
Q:What is UV Absorber UV-531?
A:UV Absorber UV-531 is a benzophenone-based ultraviolet absorber with the chemical name 2-Hydroxy-4-n-octoxybenzophenone and CAS Number 1843-05-6. It is used as a light stabilizer in compatible plastics, coatings, rubber, and other polymer-based materials.
Q:What is UV-531 used for?
A:UV-531 is used to help protect polymer materials and coatings against UV-induced degradation. Typical applications include PE, PP, PVC, PS, PC, EVA, industrial coatings, polyurethane systems, and rubber products, subject to formulation compatibility.
Q：How does UV-531 protect plastic materials?
A：UV-531 absorbs ultraviolet radiation and dissipates the absorbed energy, helping reduce the UV exposure that contributes to polymer degradation. Depending on the formulation and exposure conditions, this can help delay yellowing, discoloration, cracking, and the loss of physical properties.
Q：What is the typical dosage of UV-531?
A：Preliminary range of 0.1%–0.5% by weight is commonly referenced for certain polymer formulations. The actual dosage should be established through formulation trials and performance testing.
Q：Where can I obtain UV Absorber UV-531 technical information?
A：For product-specific specifications, technical data, safety information, and purchasing enquiries, contact WSD Chemical and request the documentation applicable to the intended product grade.
1.UV stabilizer is one important UV additive on coloer products
2.UV stabilizer additives mainly used on plastics.rubber,
3.UV 531 suggust dosage is 0.1%-0.5%.