N,N-二甲基丙烯酰胺的制作方案英文翻译讲法

N,N-Dimethacrylamide production plan

1. Method It is made by reacting with dimethylamine.

2. Acrylic acid method It is produced by the reaction of acrylic acid and dimethylamine. In order to protect the double bond, the Diels-Alder reaction is used.

3. Acrylamide method Obtained by N-methylation.

4. (1) First add 600kg of dimethylformamide into the reaction kettle, then add 53.2kg of acrylamide, 92.4kg of potassium hydroxide and 0.15kg of phenothiazine in sequence, and after stirring uniformly, raise the temperature of the system to At 40°C, slowly add 106kg of methane while stirring, and keep it at 40°C for 6h after the addition of methane.

(2) After the reaction time is reached, the reaction mixture is cooled to 20°C, filtered to remove insolubles, and the solvent and unreacted methane are evaporated first, and then the fractions at 80～81°C and 2.67KPa are collected to obtain polymerization Grade N,N-dimethylacrylamide.

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