Yellowing resistance refers to the phenomenon of yellowing when articles are exposed to natural light, ultraviolet, heat, oxygen, stress, chemical etching, moisture and other environment and improper production process. The process of anti yellowing is very complex, involving many aspects, but the prevention of a certain point can not meet the standard, yellowing is mainly caused by aging. To control yellowing is to control the aging process. Then aging is divided into thermal aging, oxygen aging and ozone (static electricity belongs to ozone, because static electricity produces ozone). Gas corrosion aging, heavy metal oxidation aging, reaction aging, ultraviolet aging, etc.

The role of light screen agent is like setting a barrier between the polymer and light radiation, so that the light can not be directly radiated to the inside of the polymer, can make the inside of the polymer from ultraviolet harm, thus effectively inhibiting photooxidation degradation. This is different to be able to shade or reflect ultraviolet material, so that the light can not penetrate into the interior of the polymer, thus playing the role of protection of the polymer. There are inorganic pigments such as carbon black, titanium oxide and organic pigments such as phthalocyanine blue and phthalocyanine green, among which carbon black has the best shielding effect.

Antioxidant AO80 is a new type of hindered phenolic antioxidant. Compared with the traditional hindered phenolic antioxidant, it shows excellent efficacy in inhibiting the coloring of nitrogen oxides (nitric oxide, nitrogen dioxide) and the synergistic effect of thioesters.

JADEWIN AO 136 is a highly efficient carbon free radical trapping agent. It has remarkable effect when used in combination with phenolic and phosphite antioxidants.

Qingdao Jadewin-products have good ultraviolet absorber 897 through 2021 in the CFC bromine iodine and halo ROHS2.0 two tests.