Preparation method of environment-friendly antioxidant triphosphite
A technology of triphosphite and antioxidant, which is applied in the field of preparation of triphosphite, and can solve the problems of recycling, regeneration and large pollution
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Embodiment 1
[0020] a. Add 100 g of 2,4-di-tert-butylphenol, 350 g of toluene and 2.0 g of activated 717 strong basic anion resin into the reaction kettle; Add 25 g of phosphorus into the reactor; c, heat to 110° C., react for 1.5 h, stop nitrogen flow, and evaporate toluene under reduced pressure to obtain crystals; d, then add a small amount of isopropanol to filter and wash the crystals to obtain crude tri(2 , 4-di-tert-butylphenyl) phosphite; e, recrystallized with cyclohexane, filtered, washed and dried to obtain refined tris (2,4-di-tert-butylphenyl) phosphite. Wherein, step b and step d are all carried out under the situation of stirring. The obtained compound is a white crystalline powder product, and the calculated yield is 83%.
Embodiment 2
[0022] a. Add 100 g of 2,4-di-tert-butylphenol, 200 g of toluene and 6.0 g of activated 717 strong basic anion resin into the reaction kettle; Add 15g of phosphorus into the reaction kettle; c, heat to 110°C, react for 1.5h, stop nitrogen flow, and evaporate toluene under reduced pressure to obtain crystals; d, then add a small amount of isopropanol to filter and wash the crystals to obtain crude tri(2 , 4-di-tert-butylphenyl) phosphite; e, recrystallized with cyclohexane, filtered, washed and dried to obtain refined tris (2,4-di-tert-butylphenyl) phosphite. Wherein, step b and step d are all carried out under the situation of stirring. The obtained compound is a white crystalline powder product, and the calculated yield is 95%.
Embodiment 3
[0024] a. Add 100g of 2,4-di-tert-butylphenol, 200g of toluene and 10g of activated 717 strong basic anion resin into the reaction kettle; 20g was added to the reaction kettle; c, heated to 110°C, reacted for 1.5h, stopped nitrogen, and evaporated toluene under reduced pressure to obtain crystals; d, then added a small amount of isopropanol to filter and wash the crystals to obtain crude tri(2, 4-di-tert-butylphenyl)phosphite; e, recrystallized with cyclohexane, filtered, washed and dried to obtain refined tris(2,4-di-tert-butylphenyl)phosphite. Wherein, step b and step d are all carried out under the situation of stirring. The obtained compound is a white crystalline powder product, and the calculated yield is 89%.
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