Hydrogen Peroxide → 2-Methylprop-2-ene-1-sulfonic acid

Participants

Reaction Steps

196 g (2 mol) of maleic anhydride and 150 g of ion-exchanged water were placed in a four-necked flask fitted with the same devices as in Example 1. 117 g (1.4 mol) of 48% sodium hydroxide was added thereto under stirring to neutralize the same. 94.8 g (0.6 mol) of sodium methallylsulfonate was added thereto and the temperature was elevated to a reflux temperature. Thereafter, 68 g of a 60% hydrogen peroxide solution was added dropwise thereto over 2 h. After aging for 1 h, 47 g of 30% sodium persulfate and 57 g of a 60% aqueous hydrogen peroxide solution were added dropwise thereto over 3 h. Simultaneously 50 g (0.6 mol) of 48% NaOH was added dropwise over 2 h. After aging under reflux for 2 h, the reaction mixture was cooled to obtain a copolymer of maleic acid and methallylsulfonic acid (molar ratio of 100/30).

Provenance & Evidence