Production process of bisultap
A production process, dimehypo technology, applied in the direction of biocides, insecticides, plant growth regulators, etc., can solve the problems of reduced reaction speed, increased environmental burden, difficult to achieve, etc., to achieve increased sulfonation yield, reduce The pressure and the effect of reducing production costs
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Embodiment 1
[0037] A production process of dimehypo, comprising the following steps:
[0038] (1) Preparation of chlorides: Throw 800g of N,N-dimethylacrylamine hydrochloride aqueous solution (content 56.2%) into a 2000mL four-neck flask, dehydrate under reduced pressure to 120°C (-0.097MPa), and cool to 55°C Then add 1200mL dichloroethane, raise the temperature to 85°C for azeotropic reflux dehydration for 3 hours, take a sample to detect the moisture content of 0.21%, cool down the feed liquid again to 40°C, and start to pass chlorine gas. The feed liquid first becomes clear and transparent, and then gradually becomes white and turbid. Continue to pass chlorine until the feed liquid appears yellow-green and does not fade, and the chlorination is over. Negative pressure glass tube blowing air method dechlorination for 20min, when the material liquid is white and turbid, add 500mL water, stir for 30min, wait until the white matter is completely dissolved, transfer to a separatory funnel f...
Embodiment 2
[0041] A production process of dimehypo, comprising the following steps:
[0042] (1) Preparation of chloride: Throw 1000g of N,N-dimethylacrylamine hydrochloride aqueous solution (56.2% content) into a 2000mL four-neck flask, dehydrate under reduced pressure to 123°C (-0.096MPa), and cool down to 62°C Then add 1500mL of dichloroethane, raise the temperature to 90°C for azeotropic reflux dehydration for 3 hours, take a sample to detect the water content of 0.22%, cool down the feed liquid again to 50°C, and start to pass chlorine gas. The feed liquid first becomes clear and transparent, and then gradually becomes white and turbid. Continue to pass chlorine until the feed liquid appears yellow-green and does not fade, and the chlorination is over. Negative pressure glass tube blowing air method dechlorination for 90min, when the material liquid is white and turbid, add 700mL water, stir for 30min, wait until the white material is completely dissolved, transfer to a separatory f...
Embodiment 3
[0045] A production process of dimehypo, comprising the following steps:
[0046] (1) Preparation of chlorides: Throw 900g of N,N-dimethylacrylamine hydrochloride aqueous solution (content 56.2%) into a 2000mL four-necked flask, dehydrate under reduced pressure to 118°C (-0.098MPa), and cool down to 60°C Then add 1300mL of dichloroethane, heat up to 88°C for azeotropic reflux dehydration for 4 hours, take a sample to detect the moisture content of 0.18%, cool down the feed liquid again to 45°C, and start to pass chlorine gas. The feed liquid first becomes clear and transparent, and then gradually becomes white turbid. Continue to pass chlorine until the feed liquid appears yellow-green and does not fade, and the chlorination is over. Negative pressure glass tube blowing air method for dechlorination for 40min. When the material liquid is white and turbid, add 600mL of water and stir for 30min. After the white matter is completely dissolved, transfer to a separatory funnel for ...
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