Light Stabilizer 3853

Chemical name:2,2,6,6-Tetramethyl-4-piperidinyl stearate
English name:2,2,6,6-Tetramethyl-4-piperidinyl stearate
CAS No.:167078-06-0
Structural formula:

Quality specifications:

Packaging:Net weight 25 kg in plastic drums or 160 kg in iron drums.
Applications:This product is a new-type hindered amine light stabilizer, used in polyolefin plastics, polyurethane, ABS resin, coatings, adhesives, rubber, etc. It has excellent light-stabilizing effects and offers the advantages of high efficiency and low toxicity.
The synthesis of hindered amine light stabilizer 3853 uses methyl stearate and 2,2,6,6-tetramethyl-4-piperidinol as raw materials; under the action of sodium methoxide catalyst and with xylene as solvent, light stabilizer 3853 is obtained by transesterification. Through orthogonal experiments, favorable reaction conditions were obtained: molar ratio n(C9H19NO):n(methyl stearate) = 1.15:1, reaction time 7 h, catalyst dosage 8% of the methyl stearate mass. Under these conditions, the synthesized product meets quality standards, with a yield of 95.6%.