Hydrogen Peroxide → Acrylic acid maleic acid

Beteiligte Stoffe

Reaktionsschritte

58.8 g (0.6 mole) of maleic anhydride, 200 g of water, 48 g (1.2 moles) of sodium hydroxide were charged in a flask equipped with a thermometer and a Dimroth condenser. Maleic anhydride was neutralized while performing agitation to prepare an aqueous solution of 30% disodium maleate. After that, the heating was performed to a reflux temperature under the normal pressure. Subsequently, 72 g (0.4 mole) of an aqueous solution of 40% acrylic acid, 50 g of an aqueous solution of 10% ammonium persulfate as an polymerization initiator, and 50 g of an aqueous solution of 14% hydrogen peroxide were gradually added dropwise separately over 4 hours respectively to perform the copolymerization reaction. After the completion of the dropwise addition, the agitation was continued for further 1 hour to complete the copolymerization reaction. After that, the neutralization was performed with 28 g (0.35 mole) of an aqueous solution of 49% sodium hydroxide to obtain an objective substance.

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