They are used as Light Stabilizer of ACSORB UV Series Products

Physical Properties: The series of products are white to off white powder, soluble in organic solvent, e.g. DCM, EtOAc, ethanol etc. The melting point of the series products in the range of 50-80^oC.

Thermo-Aging Test in Oven: Test Result for PP plate with our stabilizers, 150℃, 40 days(960hrs) is shown below. 

Upper plate is added with market light stabilizer 3853, the rest are added with Ruikang's light stabilizers.

The far right plate is added with market light stabilizer 3853, the rest are added with Ruikang's light stabilizers.

Conclusion:Ruikang's light stabilizers have stronger anti-thermal aging properties compared to market's Light Stabilizer 3853.

Figure: Yellow Index versus Thermal Aging Time