Treatment method of waste residue in the production of high content rubber anti-aging agent tmq
A treatment method and technology of anti-aging agent, applied in the direction of organic chemistry, etc., can solve the problems of polluting the environment and the inability to treat waste residues, achieving the effect of environmental protection and significant economic benefits, and saving the cost of waste residue treatment
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Embodiment 1
[0021] (1) Condensation: Mix 100kg of residue, 10kg of aniline, 200kg of acetone, and 10kg of monomer in a reactor, and heat up to polycondense; the reaction temperature is 50°C, and the reaction is 3h; the acetone is distilled and recovered after the reaction;
[0022] (2) Neutralization: Prepare a 5% sodium hydroxide solution, add it dropwise to the condensation kettle, and at the same time add silicone defoamer S909 until there is no obvious foam; stop adding when the pH value reaches 6, and let it stand for 30 minutes Separate the aqueous layer;
[0023] (3) The oil phase enters the monomer still, and the distillation temperature is 200°C; when there is no reflux in the sight glass, the distillation is stopped, and the finished product is cooled and granulated; the softening point is 92°C, and the effective content is 43%. Agent RD national standard.
Embodiment 2
[0025] (1) Condensation: Mix 100kg of residue, 10kg of aniline, 300kg of acetone, and 10kg of monomer in a reaction kettle, and heat up for polycondensation. The reaction temperature was 75°C, and the reaction was carried out for 2 hours; the acetone was distilled and recovered after the reaction;
[0026] (2) Neutralization: prepare potassium hydroxide solution with a mass concentration of 7%, drop it into the condensation kettle, and add polyether defoamer GP330 dropwise until there is no obvious foam; stop dropping when the pH value reaches 7, and let it stand for 30 minutes Afterwards, the aqueous layer was separated;
[0027] (3) The oil phase enters the monomer still, and the distillation temperature is 230°C. When there is no reflux in the sight glass, stop the distillation, cool down and granulate to obtain the finished product; the softening point is 88°C, the effective content is 43%, and all indicators meet the national standard of ordinary anti-aging agent RD.
Embodiment 3
[0029] (1) Condensation: Mix 100kg of residue, 50kg of aniline, 500kg of acetone, and 10kg of monomer in a reactor, and heat up for polycondensation; the reaction temperature is 100°C, and the reaction is 1 hour; the acetone is distilled and recovered after the reaction
[0030] (2) Neutralization: configure a 10% sodium hydroxide solution with a mass concentration, add it dropwise to the condensation kettle, and add the high-carbon alcohol defoamer 2,6-dimethyl-4-heptanol dropwise until there is no obvious foam; when the pH Stop dripping when the value reaches 7, and the water layer is separated after standing for 30min;
[0031] (3) The oil phase enters the monomer still, and the distillation temperature is 250°C. When there is no reflux in the sight glass, stop the distillation, cool down and granulate to obtain the finished product; the softening point is 91°C, the effective content is 45%, and all indicators meet the national standard of ordinary anti-aging agent RD.
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