Styrene → Sodium 4-styrenesulfonate

Participants

Reaction Steps

A polymerization flask, the inner atmosphere of which was substituted with nitrogen, was charged with 0.2 g of Emulgen 935 (polyoxyethylene nonylphenol ether supplied by Kao-Atlas), 0.2 g of Emulgen 920 (polyoxyethylene nonylphenol ether supplied by Kao-Atlas), 0.3 g of acidic sodium sulfite (NaHSO3) and 46.5 g of water, and the temperature was elevated to 40° C. in a nitrogen current. A liquid monomer mixture comprising 30 g of styrene, 67 g of ethyl acrylate and 3 g of 2-hydroxyethyl methacrylate, an aqueous solution of 2.5 g of sodium p-styrene-sulfonate having a purity of 82.0% (Spinomar NaSS supplied by Toyo Soda) in 47.5 g of water and an aqueous solution of a polymerization initiator formed by dissolving 0.5 g of ammonium persulfate in 49.5 g of water were added into the polymerization flask over a period of 3 hours and polymerization was carried out at 40° C. After completion of the addition, the polymerization was further conducted at 40° C. for 3 hours.

Provenance & Evidence