Water → Acrylamide

Participants

Reaction Steps

A copolymer of acrylamide (95.0 wt. %) and styrene (5.0 wt. %) is prepared according to a modification of the procedure of Example 1C using 0.5 wt. % n-C12SH, 0.2 wt. % ammonium persulfate and a solvent medium consisting of 75 wt. % deionized water and 25 wt. % t-butanol. The modification is that the styrene monomer is mixed into the chain transfer agent solution and fed into the reaction flask in that solution. Upon completion of the polymerization, the t-butanol is removed via a steam sparge to afford the product at 17.0% solids in water with a Brookfield Viscosity of 28,000 cps.

Provenance & Evidence