Tinuvin ® 326 is BASF's ultraviolet absorber. The appearance is a light yellow powder, with good stability and compatibility. Suitable for polyolefins, coatings, and photosensitive materials. Can prevent material degradation due to ultraviolet radiation, protect color and performance. There are extensive indirect food contact permits in polyolefins. Suggest adding 0.1% -0.6%. It needs to be stored in a dry, sealed, and dark place to improve the product's weather resistance and service life, and meet the material performance requirements of different fields.

Tinuvin ® 326 is a benzotriazole based ultraviolet absorber produced by BASF. Here are some of its main features and application information:
 

characteristic:

Physical properties: The appearance is a light yellow powder, with a melting point of 138-141 ° C, a density of 1.32g/cm ³ (20 ° C), a flash point of 238 ° C, a vapor pressure (20 ° C) of 7.5e-7Pa, and a bulk density of 130-200g/L.

Good stability: Low volatility at high temperatures, high resistance to thermal degradation, and no significant loss or decomposition during polyolefin mixing and processing.

Good compatibility: It has good compatibility in various organic matrices, as well as good solubility and moderate low fluctuation in plasticizers and monomers.

Application areas:

In terms of plastics, it is particularly suitable for polyolefins (with extensive indirect food contact permits), which can effectively prevent plastic materials from degrading due to ultraviolet radiation and protect the color and performance of plastic products.

In the field of coatings, it can be used for cold cured polyester and wood varnish, which can shield ultraviolet rays, prevent paint fading, and provide good color protection for products.

Other materials: They are also used in photosensitive materials such as color film, color film, color photo paper, etc., which can protect dyes and colorants from UV damage.