English to Spanish Tech/Engineering Chemistry; Chem Sci/Eng

Estoy traduciendo una patente sobre polímeros inhibidores de la formación de incrustaciones o costras y aparece esta expresión incompleta:

"Preparation of the reaction product of SMA with tallow amine and diethylamine (Comparative Polymer B) is as follows: xxx g of dry SMA, with a mole ratio of styrene to maleic anhydride of about xxx and Mw about xxx, is suspended in xxx g of toluene. A solution of xx g tallow amine and xxx g diethylamine in xx g toluene is added at ambient temperature and the mixture is then refluxed for 30 min. The resulting toluene slurry is cooled to room temperature and then added with mixing to about xxx ml of **2% aqueous caustic**. The toluene layer is separated and the residual toluene in the aqueous phase is removed by distillation. "