Submitted to: Journal of the American Oil Chemists' Society
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: May 24, 1999
Publication Date: N/A
Interpretive Summary: Vegetable oils are often modified by heat before use in new paint formulations. Understanding how these modifications occur is important so that these reactions can be controlled to produce more environmentally friendly paints. From our experiments, information on the types of connections between molecules, which can affect these paints' properties, was obtained. Types of connections are affected by temperature, additives, and gaseous atmosphere under which the experiments are conducted. With this information on vegetable oil-based paints, paint producers should be able to make paints with lower content of volatile materials and better quality than are now available.
Technical Abstract: Vegetable oils have been used as vehicles in both printing inks and paints. Vegetable oils are often pre-polymerized before use, such as being heated in the presence of air to form blown oil, or heated in the absence of air to form stand oil. Understanding of the mechanisms in the process of the pre-polymerization is of great significance. In this paper, the studies of the pre-polymerization, the effect of metallic catalysts on oxygen uptake in the thermal process of vegetable oils with differential scanning calorimeter, and the analysis of their hardness after application are reported.