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Hansen solubility parameter plot of polyurethane at 25°C [14]. Various solvents including, 100% acetone, 100% hexane, 100% ethyl acetate, 50:50% hexane: acetone, 75:25% hexane: acetone, and dichloromethane, are shown in the figure with respect to polyurethane. The circle represents the solubility circle for polyurethane (see discussion).
