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Aldehyde oils produced on a pilot‐plant scale gradually polymerized at room temperature and became extremely viscous or solidified in a few weeks. Initial viscosity level was maintained by converting the oils to acetals by use of a strong cation resin catalyst which, it was found, does not cause appreciable transesterification. Aldehyde conversion was determined by infrared absorbance at 2720 cm‐1. The effects of amount of alcohol and resin on degree of conversion were studied. Storage studies indicate that the acetal oils must be protected from oxidation.
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Beal et al. (1967) studied this question.
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