Anti-oxidant 168

Abstract

An anti-oxidant 168 is prepared from the following raw materials, by weight: 500-800 parts of 2,4-di-tert-butylphenol, 150-200 parts of phosphorus trichloride and 5-10 parts of pyridine. The invention has the following advantages and active effects: 1. reasonable formula and convenient preparation to increase production efficiency; 2. reduced pollution on the environment and reduced harm on workers; 3. an increased product yield higher than 90%; and 4. reduced production cost.

Description

Technical field: [0001] The invention relates to a production method of chemical products, in particular to a preparation method of antioxidant 168. Background technique: [0002] Antioxidant 168, chemical name tris(2,4-di-tert-butylphenyl) phosphite, molecular formula: C42H63O3P. Antioxidant 168 is an auxiliary antioxidant that is resistant to water extraction, low volatility, and high thermal stability. It can effectively decompose hydroperoxides generated during thermal processing of polymeric materials. As an auxiliary antioxidant, it is often used in combination with phenolic antioxidant 1010 or 1076 and has a synergistic effect. The product is widely used in polyolefins, styrene monomers and copolymers, elastomers, adhesives, engineering plastics (such as: polyester, polyurethane, PVC) and plasticizers, industrial fats, mineral oils and other organic substrates. [0003] The traditional synthesis method of antioxidant 168 has a yield of 88%, the yield of the final p...

AI Technical Summary

Problems solved by technology

Toxic substances that pollute the environment will be produced during the p