Light Stabilizers for the plastics and other polymers absorb UV energy can cause auto-oxidation reaction and lead to degradation. This process is known as photo-aging or photo-oxidation, can inhibit or delay substance known light stabilizers of this process. The 1940s, the first use of phenyl salicylate as a light stabilizer in cellulose acetate. In the early 1950s and early 1960s, Shandong toner, respectively appeared benzophenone and benzotriazole, the mid-1970s and the emergence of a hindered amine light stabilizer. Light stabilizer is mainly used in polyolefins, particularly polypropylene. Polyvinyl chloride, polycarbonate, polyester also use a small amount of a light stabilizer with about 0.1% to 0.5%. According to their mechanism of action, an ultraviolet absorber light stabilizers, quenchers, light shielding agent points. Ultraviolet absorber strongly absorbs ultraviolet light 290 ~ 400nm wavelength, 2-hydroxy-4-octyloxy-benzophenone (UV-531) and 2- (3 ', 5'-di-t-butyl-2'-hydroxy- phenyl) -5-chlorobenzotriazole (UV-327) is the best of the two varieties. Most nickel-quencher organic complex. Excited molecules can quickly and effectively absorb the energy of quenching (return to equilibrium) to avoid triggering the photochemical reaction. Ultraviolet light shielding agent may weaken the transmission effect, toner, usually black. New hindered amine light stabilizers are mainly four or five methylpiperidine methyl alcohol derivatives which have capture free radicals, quenching singlet oxygen and peroxide decomposition integrated functions, therefore it is effective light stabilizer. A cosmetic grade titanium dioxide titanium dioxide into oil and water. Because it is chemically stable, Hebei toner, a high refractive index, opacity, hiding power, whiteness, and non-toxic, is widely used in the cosmetic field, Qihe toner, from cosmetic whitening effect. Features 1. Whiteness, hiding power. 2. Hydrophilic, lipophilic product which overcomes the general dispersion of titanium dioxide in their system easily dispersed, easy precipitation and other defects, significantly improved its dispersion and anti-settling, making your product more stable and satisfactory. 3. Weathering resistance, suitable sunscreen whitening system. 4. Compatibility with other materials cosmetics good. Toner manufacturer, Toner, may Lyle plastic (view) may be provided by the Texas Plastic Co., Lyle. Texas may Lyle Plastic Co., Ltd. (www.sdkelaier.com) is specialized in "masterbatch, masterbatch, masterbatch, color masterbatch, organic pigments, additives, lake," the business, companies adhering to the "integrity management , the intentions of service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Zhou Xingrong.