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Acrylamide is the index compound of a large class of monomer, including methacrylamide, AMPS (anionic monomer, 2-acrylamido-2-methylpropanesulfonic acid, phosphonic acid),DMC (cationic monomer, methyl-oxyethyl trimethyl ammonium chloride) and N-substituted acrylamide compounds. Occupational exposure is mainly found in acrylamide production and synthesis of resin, adhesive, etc. There are also contact opportunities in underground construction, soil improvement, paint, paper making, garment processing and other industries.
Acrylic nitrile and water are hydrated in liquid phase at 70 ~ 120℃ and 0.4MPa under the action of copper catalyst. CH2 = CH-CN H2O-→ CH2 = CHCONH2 after the reaction, filter off the catalyst and recover the unreacted acrylic nitrile. The acrylamide aqueous solution is concentrated and cooled to obtain crystallization. The process flow of this method is simple, and the yield can reach more than 98%.
Warehouse ventilation cryodrying; Separate storage with oxidant, acid, food and chemical additives
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