It has now been found that the expensive benzyl formate ester is formed when the corresponding relatively inexpensive benzyl alcohol is reacted with formic acid. Further, it has been found that the reaction solution containing the formate, alcohol, and acid is a superior solvent to either the alcohol or the formate alone. Optimum results occur when the amount (by weight) of alcohol exceeds that of the ester and when the formulation contains water cheap oil paintings.
Before adding water to the formulation, premixing of the other ingredients is desirable to allow the alcohol, acid, and ester to oil paintings reach equilibrium conditions. In contrast to the foregoing, when acetic acid was substituted for formic acid, an ester could not be formed unless the reaction was driven with a catalyst.
Further, the subject benzyl formate/benzyl alcohol/formic acid formulations were found to strip polyurethane and epoxy paint systems more than abstract oil paintings two and one-half times as fast as equivalent benzyl acetate/benzyl alcohol/acetic acid formulations.
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