Long-term Effective high-temperature Antioxidant

Physical Properties: All the series of ACANOX LT products are white or off-white powder, soluble in organic solvent, melting points are in the range of 125-140^oC.

Conditions for Thermo-Aging Test in Oven:

Polymer Plate: PP /Talc 20%, 150 ^oC, 2500 hrs, Antioxidant 215: 0.3%, Versus BASF DSTDP & ADDIVANT 412S

Long-term Antioxidants: 0.3% 

105th day's colorimeter Photo

Note: On the above photo pictures #3 plate contains DSTDP; #4 plate contains 412S; the rest plates

                    contain Ruikang's Long-Term Effective High Temperature Antioxidants (see Plate #5 and #6).

Note: On above graphic curve, yellowing index of #3(DSTDP) and #4(412S) plates rise rapidly in oven up to about 100 days and thoroughly pulverized, on the contrary, Ruikang's Long-term antioxidants showed much better protection to PP polymer Plates #5 and #6.

Conclusion: Ruikang's Long-term Effective High-temperature Antioxidants exhibited much better protection to PP polymer plates versus BASF's antioxidant DSTDP and ADDIVANT's 412S under conditions of Thermo-aging at 150^oC, 2500hr, with addition amount of the long-term antioxidants 0.3% .