Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

BASF Chimassorb 81 Benzophenone UV Absorber

BASF Chimassorb 81 is a high-performance benzophenone-based UV absorber from the Chimassorb series, offering exceptional photostability and compatibility with polymers like PP, PE, and PVC. It effectively prevents UV-induced degradation, yellowing, and mechanical property loss in outdoor applications while maintaining low volatility and excellent processing stability.
  • basf chimassorb 81 benzophenone uv absorber_fb117fc5
  • basf chimassorb 81 benzophenone uv absorber_fb117fc5

Features Of BASF Chimassorb 81 Benzophenone UV Absorber

  1. Highly effective UV-A and UV-B absorption in the 290–400 nm range.

  2. Excellent compatibility with a broad range of polymers, including polyolefins, PVC, and styrenics.

  3. Good thermal stability up to 220 °C, supporting high-temperature processing such as extrusion and injection molding.

  4. Low volatility and minimal migration, ensuring long-term stabilization performance in thin films and surface applications.

  5. Non-discoloring formulation that maintains clarity and color fidelity in transparent and light-colored materials.

Typical Applications Of BASF Chimassorb 81 Benzophenone UV Absorber

  1. Agricultural mulch films and greenhouse covers.

  2. Automotive interior trim and instrument panels.

  3. Coated textiles and technical fabrics exposed to outdoor conditions.

  4. Packaging films for pharmaceuticals and premium consumer goods.

  5. Exterior profiles and sheets in rigid PVC construction applications.

Specifications Of BASF Chimassorb 81 Benzophenone UV Absorber

Chemical TypeBenzophenone derivative (2-Hydroxy-4-methoxybenzophenone)
Product FormFine crystalline powder
AppearanceWhite to off-white free-flowing powder
Melting Point62–65 °C
Solubility (25 °C)Soluble in common organic solvents (e.g., acetone, ethyl acetate, toluene); insoluble in water
UV Absorption Maxima~360 nm (in ethanol)
Primary ApplicationsPolyolefins, PVC, ABS, PS, coatings, adhesives, and inks
Key FeaturesPhotostable, low volatility, non-staining, polymer-compatible UV absorber


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