Synthetic method of sodium polydithio-dipropyl sulfonate
A technology of sodium polydithiodipropane sulfonate and sodium thiopropane sulfonate, which is applied in the field of synthesis of polydithiodipropane sodium sulfonate, can solve the problems of complex process lines and high production costs, and achieve less side reactions in synthesis , the effect of small environmental impact
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Embodiment 1
[0031] In a 1000mL flask equipped with electric stirring, constant pressure dropper, thermometer, and reflux condenser, put 200mL of water and 28g of sodium hydrosulfide into it, dissolve it at 50-60°C, cool it at 15-35°C, and add 62.5g of 1,3- After adding PS, raise the temperature to 50-60°C for 1 hour, cool down, and filter to obtain MPS liquid.
[0032] Add 75 grams of tert-butyl hydroperoxide to the above MPS solution, react to the end, heat up, keep warm at 50-60°C for 4 hours, keep warm at 70-80°C for 2 hours, decolorize, dehydrate and nearly dry, add methanol to disperse, filter, and dry 80.5 g SPS was obtained, the yield was 96%.
[0033] Add solvent, recover and apply mechanically.
Embodiment 2
[0035] Put 200kg of water and 28kg of sodium hydrosulfide into a 500L reactor, heat up to 50-60°C to dissolve, cool down to 10-30°C, add 62.5kg of 1,3-PS, after adding, heat up to 50-60°C for 1 hour, cool down to 10 ℃~40℃, filter to obtain MPS liquid.
[0036] Add 75kg of oxidant tert-butyl hydroperoxide to the above MPS liquid, react to the end point, raise the temperature to 50-60°C, and keep it warm for 4 hours; heat up, keep it at 70-80°C for 2 hours, use activated carbon to decolorize, dehydrate under reduced pressure, and dry it. Add methanol to disperse, filter, and dry to obtain 81kg SPS.
[0037] The added solvent was recovered and used mechanically.
Embodiment 3
[0039] In a 1000mL flask equipped with electric stirring, constant pressure dropper, thermometer, and reflux condenser, put 200mL of water and 28g of sodium hydrosulfide into it, dissolve it at 50-60°C, cool it at 15-35°C, and add 62.5g of 1,3- After adding PS, raise the temperature to 50-60°C for 1 hour, cool down, and filter to obtain MPS liquid.
[0040] Add 50 grams of hydrogen peroxide to the above MPS solution, react to the end, heat up, keep warm at 50-60°C for 4 hours, keep warm at 70-80°C for 2 hours, decolorize, dehydrate and nearly dry, add methanol to disperse, filter, and dry to obtain 75.5g SPS , yield 90%.
[0041] The added solvent was recovered and used mechanically.
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