Structural formula：

Product Description：

Properties and Usage:

UV-531 is an efficient and fast free radical (I) type light stabilizer, mainly used in UV curing coatings. Its product features include:

a) High absorption performance: In the ultraviolet spectrum range, especially in the 300-400nm band, it has a high degree of ultraviolet absorption ability, so it shows excellent light stabilization effect in plastic products.

b) Good compatibility: It has excellent compatibility with thermoplastic resins, especially polyolefins, ensuring uniform dispersion in the polymer.

c) Low volatility: It has extremely low evaporation pressure and can avoid product loss during processing.

d) Low migration: It has low migration and will not bloom.

e) Excellent heat resistance: There is no significant degradation and volatilization at extrusion temperature, showing excellent heat resistance.

f) Chemical inertness: It is chemically inert during the plastic production process and will not affect the chemical properties of the resin and dressing.

g) Odorless: It will not cause the resin to smell and complies with the hygienic standards of the product.

h) High purity: It has unique high purity and will not have a negative impact on the product due to impurity.

Application areas:

UV-531 is widely used in polymers, especially in scenes that are greatly affected by ultraviolet light. Specific applications include but are not limited to:

Polyethylene: It is very effective for both high-density and low-density polyethylene. It can be used for polyethylene flat filament, monofilament, film and other products, which can extend the service life and improve weather resistance.

Polypropylene: Effective in both colored and clear polypropylene, suitable for products such as fibers, monofilaments, plain yarns, ribbons, webs and films.

Polyvinyl chloride: In ordinary polyvinyl chloride, especially in plasticized PVC products, UV531 can effectively prevent yellowing and changes in physical properties caused by ultraviolet radiation.

SBS and PS modified TPR materials: suitable for these materials, which can improve their weather resistance and stability.

The testing methods of UV-531 include appearance testing, ultraviolet absorption spectrum testing, solubility testing, content testing, thermal stability testing, weather resistance testing and safety testing to ensure its quality and safety.

Packaging specifications:

This product is packed in 20KG or 25KG carton, lined with plastic bag, or can be customized according to customers' requirements.

Good storage stability. Store in a dry area below 25°C in a proper way.