Light stabilizer GW-540

　　Alias: tris (1,2,2,6,6-pentapiperidinyl) phosphite

　　Appearance: white crystalline powder.

　　Melting point: 122～124℃. Soluble in ethanol, chloroform, acetone, benzene and other solvents, but insoluble in water.

　　Product usage and precautions

　　This product is a hindered light stabilizer. It does not have the ability to absorb ultraviolet rays, but it can capture the active radicals generated by the degradation of polymers, decompose hydroperoxides and transfer the energy of excited molecules. The light stabilization effect is general ultraviolet rays. 24 times the absorbent. This product is suitable for plastics such as polyethylene and polyethylene. It has good compatibility with resin and good processing performance. In addition to its light stabilizing effect, it also has good resistance to thermal oxygen aging. However, this product has poor heat resistance and is not suitable for long-term use in hot water media. In addition, this product is best processed and used at a temperature below 270°C, and weight loss is more serious when the temperature is exceeded.

　　Safety precautions This product has low toxicity.